Substrate processing apparatus and substrate processing method
Abstract
On top of respective areas divided by partition plates,that is, a cassette station, a processing station, and aninterface section in a coating and developinq processing system,gas suppky sections for supplying an inert gas into therespective areas are provided. Exhaust pipes for exhaustingatmospheres in the respective areas are provided at the bottomof the respective areas. The atmospheres in the respectiveareas are maintained in a clean condition by supplying the inertgas not containing impurities such as oxygen and fine particlesfrom the respective gas supply sections into the respective areasand exhausting the atmospheres in the respective areas from theexhaust pipes.
Term
No projected expiry on record.
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61 claims: 47 independent, 14 dependent
- 1一種基板處理裝置,係具有:承載及下載部,係用以於前述基板處理裝置內搬入及搬出基板者;處理部,係至少具有一用以於基板上形成塗布膜之塗布處理裝置、一用以進行前述基板之顯像的顯像處理裝置、一用以進行前述基板之熱處理的熱處理裝置、及一用以對前述塗布處理裝置及顯像處理裝置與熱處理裝置進行搬入及搬出前述基板的第1搬送裝置者;界面部,係至少具有一第2搬送裝置,該第2搬送裝置係用以於前述處理部與進行前述基板之曝光處理之曝光處理裝置間的經由路徑搬送基板者;第1氣體供給裝置,係用以對前述界面部供給非活性氣體者;及第1排氣裝置,係用以排放前述界面部之環境氣體者。
- 2如申請專利範圍第1項之基板處理裝置,其中更具有:第2氣體供給裝置,係用以對至少具有前述處理部內之前述熱處理裝置與前述第1搬送裝置的區域供給非活性氣體者;及第2排氣裝置,係用以至少排放前述區域之環境氣體者。
- 3如申請專利範圍第1項之基板處理裝置,其中更具有:第3氣體供給裝置,係用以對前述承載及下載部供給非活性氣體者;及第3氣體排放裝置,係用以排放前述承載及下載部之環境氣體者。
- 4如申請專利範圍第2項之基板處理裝置,其中更具有:第1間隔板,係用以遮斷前述界面部與前述處理部之環境氣體,且具有一用以於前述處理部中之前述區域與界面部之間交接基板的第1通過口者;及第1開關,係用以令前述第1通過口自由開關者。
- 5如申請專利範圍第4項之基板處理裝置,其中更具有:第2間隔板,係用以遮斷前述處理部與承載及下載部之環境氣體,且具有一用以於前述處理部中之前述區域與承載及下載部之間交接基板的第2通過口者;及第2開關,係用以令前述第2通過口自由開關者。
- 6如申請專利範圍第1項之基板處理裝置,其中更具有一清淨機構,該清淨機構係用以令由前述第1排氣裝置排放之至少一部分環境氣體清淨化,以再度作為前述非活性氣體而送至前述氣體供給裝置者。
- 7如申請專利範圍第1項之基板處理裝置,其中更具有一用以調整前述非活性氣體之溫度的溫度調整機構。
- 8如申請專利範圍第1項之基板處理裝置,其中更具有一可將前述界面部內之壓力設成較前述曝光處理裝置內之壓力低的第1壓力調整機構。
- 9如申請專利範圍第8項之基板處理裝置,其中更具有一可將前述界面部內之壓力設成較前述處理部中之前述區域內的壓力低的第2壓力調整機構。
- 10如申請專利範圍第9項之基板處理裝置,其中更具有一可將前述處理部之前述區域內的壓力設成較前述承載及下載部之壓力高的第3壓力調整機構。
- 11如申請專利範圍第9項之基板處理裝置,其中更具有一可將前述處理部之前述區域內的壓力設成較前述處理部中之前述塗布處理裝置及前述顯像處理裝置內的壓力低的第4壓力調整機構。
- 12如申請專利範圍第1項之基板處理裝置,其中更具有一可將前述基板處理裝置內的壓力設成較前基板處理裝置外之壓力高的第5壓力調整機構。
- 13一種基板處理裝置,係用以進行基板之塗布顯像處理者,該基板處理裝置係具有:處理部,係至少具有一用以於基板上形成塗布膜之塗布處理裝置、一用以進行前述基板之顯像的顯像處理裝置、一用以進行前述基板之熱處理的熱處理裝置、及一用以對前述塗布處理裝置及顯像處理裝置與熱處理裝置進行搬入及搬出前述基板的主搬送裝置者;界面部,係用以於前述處理部與進行前述基板之曝光處理之曝光處理裝置間之經由路徑搬送基板,且,至少配置有一用以進行曝光前之基板熱處理的第1熱處理裝置、一用以進行搬送曝光前之基板搬送的第1搬送裝置、一用以進行曝光後之基板熱處理的第2熱處理裝置及一用以進行搬送曝光後之基板搬送的第2搬送裝置者;第1氣體供給部,係用以對具有前述界面部內之前述第1熱處理裝置與前述第2搬送裝置的曝光前區域供給非活性氣體者;第1排氣裝置,係用以排放前述曝光前區域之環境氣體者;第2氣體供給部,係用以對具有前述界面部內之前述第2熱處理裝置與前述第2搬送裝置的曝光後區域供給非活性氣體者;及第2排氣裝置,係用以排放前述曝光後區域之環境氣體者。
- 14如申請專利範圍第13項之基板處理裝置,其中前述第2氣體供給裝置係用以供給較藉由前述第1氣體供給裝置所供給之非活性氣體之溫度低的非活性氣體。
- 15如申請專利範圍第13項之基板處理裝置,其中前述第2氣體係用以供給氧氣濃度低之非活性氣體。
- 16如申請專利範圍第13項之基板處理裝置,其中更具有一用以遮斷前述曝光前區域與前述曝光後區域間之環境氣體的第1間隔板。
- 17如申請專利範圍第13項之基板處理裝置,其中更具有:第2間隔板,係用以遮斷前述處理部與前述界面部間之環境氣體,且具有一用以於前述處理部與前述曝光前區域之間交接基板的第1通過口、及一用以於前述處理部與前述曝光後區域之間交接基板的第2通口者;第1開關,係用以令前述第1通過口自由開關者;及第2開關,係用以令前述第2通過口自由開關者。
- 18如申請專利範圍第13項之基板處理裝置,其中更具有一用以調節前述非活性氣體溫度之溫度調節機構。
- 19如申請專利範圍第13項之基板處理裝置,其中更具有一用以將前述界面部內之壓力設成較前述曝光處理裝置內之壓力低的壓力調整機構。
- 20一種基板處理裝置,係具有:處理部,係用以進行基板之塗布顯像處理者;界面部,係用以至少於前述處理部與進行前述基板之曝光處理之曝光處理裝置間之經由路徑搬送基板者;第1氣體供給裝置,係用以對前述界面部供給非活性氣體者;及第1排氣裝置,係用以排放前述界面部之環境氣體者。
- 21一種基板處理裝置,係具有:處理部,係用以進行基板之塗布顯像處理者;界面部,係用以至少於前述處理部與進行前述基板之曝光處理之曝光處理裝置間之經由路徑搬送基板,且,劃分為一用以將前述處理部交接之基板搬送至曝光處理裝置的第1區域,與一用以將前述曝光處理裝置交接之基板搬送至前述處理部的第2區域者;第1氣體供給部,係用以對前述第1區域供給非活性氣體者;第1排氣裝置,係用以排放前述第1區域之環境氣體者;第2氣體供給部,係用以對前述第2區域供給非活性氣體者;及第2排氣裝置,係用以排放前述第2區域之環境氣體者。
- 22一種基板處理裝置,係具有:處理部,係用以進行基板之塗布顯像處理者;界面部,係用以至少於前述處理部與進行前述基板之曝光處理之曝光處理裝置間之經由路徑搬送基板者;處理室,係配置於前述界面部內,用以暫時保持從前述處理部交接而搬送至前述曝光處理裝置之基板者;及環境氣體控制器,係用以控制前述處理室內的環境氣體者。
- 23如申請專利範圍第22項之基板處理裝置,其中前述環境氣體控制器係用以將前述處理室內減壓。
- 24如申請專利範圍第22項之基板處理裝置,其中前述環境氣體控制器係用以對前述處理室內供給非活性氣體。
- 25如申請專利範圍第22項之基板處理裝置,其中前述環境氣體控制器係用以對前述處理室內供給乾燥空氣。
- 26如申請專利範圍第22項之基板處理裝置,其中前述處理室更具有:清潔室,係用以暫時保持導入前述處理室內之基板並予以清潔者;緩衝室,係用以保持基板者;及搬送裝置,係用以於前述清潔室與前述緩衝室之間搬送基板者。
- 27如申請專利範圍第26項之基板處理裝置,其中前述緩衝室更具有一用以對前述曝光處理裝置將基板直接搬出的通過口。
- 28一種基板處理裝置,係至少具有:塗布處理裝置,係用以於基板上形成塗布膜者;顯像處理裝置,係用以進行前述基板之顯像者;熱處理裝置,係用以進行前述基板之熱處理者;搬送裝置,係用以對前述塗布處理裝置、顯像處理裝置及熱處理裝置進行前述基板之搬入及搬出者;及送風裝置,係用以對藉由前述搬送裝置所搬送之基板吹送非活性氣體者。
- 29如申請專利範圍第28項之基板處理裝置,其中前述搬送裝置更具有一用以保持基板的銷組;前述送風裝置更具有一用以由前述銷組上方吹送非活性氣體之送風口的上面覆蓋構件。
- 30如申請專利範圍第29項之基板處理裝置,其中前述送風口係對應前述銷組之形狀而多數設置。
- 31如申請專利範圍第29項之基板處理裝置,其中前述送風口係對應前述基板之形狀而多數設置。
- 32如申請專利範圍第28項之基板處理裝置,其中前述送風裝置更具有一用以控制非活性氣體之溫度的溫度控制機構。
- 33如申請專利範圍第28項之基板處理裝置,其中前述送風裝置更具有一用以控制非活性氣體之濕度的濕度控制機構。
- 34如申請專利範圍第28項之基板處理裝置,其中前述送風裝置係用以於前述搬送裝置由前述塗布裝置將基板搬送至前述熱處理裝置時吹送非活性氣體。
- 35一種基板處理裝置,係具有:反應抑制部,係用以對塗布光阻而曝光之基板施予抑制光阻之解像反應進行之處理者;加熱部,係用以將於前述反應抑制部中經處理之基板予以加熱而進行光阻之解像反應者;冷卻部,係用以冷卻前述加熱部所加熱之基板而抑制光阻進行解像反應者;及顯像處理部,係用以對前述冷卻部所冷卻之基板進行顯像液之塗布處理者。
- 36一種基板處理裝置,係具有:卡閘站,係包含有一用以載置裝納有多數基板之基板卡閘的載置部、及一用以對載置於此載置部之基板卡閘進行基板交接的交接構件者;處理站,係連接於前述卡閘站,用以對前述交接構件所搬送之基板進行處理者;及界面站,係用以於前述處理站與對基板進行曝光處理之曝光裝置間交接基板者;前述界面站更包含有一用以對經塗布光阻而曝光之基板施予抑制光阻進行解像反應之處理的反應抑制部,前述處理站更包含有一用以對經前述反應抑制部冷卻之基板加熱而促使光阻之解像反應進行的加熱部、一用以對經前述加熱部加熱之基板冷卻而抑制光阻之解像反應進行的冷卻部、及一用以對前述基板進行顯像液之塗布處理的顯像處理部。
- 37如申請專利範圍第36項之基板處理裝置,其中前述反應抑制部係設置於曝光裝置之附近。
- 38如申請專利範圍第35項之基板處理裝置,其中前述反應抑制部係藉由將經塗布光阻且曝光之基板冷卻至不發生結露,而可抑制光阻進行解像反應。
- 39如申請專利範圍第35項之基板處理裝置,其中前述反應抑制部係藉由將附著於經塗布光阻且曝光之基板的水分量設成較搬送至反應抑制部時附著於基板之水分量少,而可抑制光阻進行解像反應。
- 40如申請專利範圍第39項之基板處理裝置,其中前述反應抑制部係藉由對基板供給較設有此反應抑制部之環境氣體之空氣的濕度低的氣體,而將附著於基板的水分量設成較搬送至反應抑制部時附著於基板之水分量少。
- 41如申請專利範圍第35項之基板處理裝置,其中前述光阻係化學放大型光阻,該化學放大型光阻係使藉由曝光所產生之酸進行光阻之解像反應者。
- 42如申請專利範圍第35項之基板處理裝置,其中前述反應抑制部係因應塗布前述光阻並曝光之基板的領域而控制抑制光阻進行解像反應之程度。
- 43一種基板處理方法,係具有以下步驟,即:對經塗布光阻並曝光之基板施予抑制光阻進行解像處理的步驟;將經前述抑制進行光阻之解像反應的基板予以加熱而進行光阻之解像反應的步驟;冷卻前述經加熱之基板而抑制進行光阻之解像反應的步驟;及於前述經冷卻之基板進行塗布顯像液處理的步驟。
- 44如申請專利範圍第43項之基板處理方法,其中前述反應抑制步驟係藉由將經塗布光阻並曝光之基板冷卻至不發生結露,而可抑制進行光阻之解像反應。
- 45如申請專利範圍第43項之基板處理方法,其中前述反應抑制步驟係藉由將附著於塗布光阻且曝光之基板的水分量設成較搬送至該反應抑制步驟內時附著於基板的水分量少,而可抑制進行光阻之解像反應。
- 46如申請專利範圍第43項之基板處理方法,其中前述反應抑制步驟係藉由對基板供給較此反應抑制步驟內之環境氣體之空氣的濕度低的氣體,而將附著於基板的水分量設成較搬送至前述反應抑制步驟內時附著於基板之水分量少。
- 47如申請專利範圍第43項之基板處理方法,其中前述光阻係化學放大型光阻,該化學放大型光阻係使藉由曝光所產生之酸進行光阻之解像反應者。
- 48一種基板處理方法,係具有以下步驟,即:於基板上塗布光阻的步驟;一邊抑制前述經塗布光阻並曝光之基板之光阻的解像反應,一邊將之搬送至加熱部的步驟;於加熱部加熱前述經搬送之基板,以進行光阻之解像反應的步驟;冷卻經進行前述解像反應之基板,以抑制光阻進行解像反應的步驟;及對於經抑制進行前述解像反應之基板進行顯像液之塗布處理的步驟。
- 49如申請專利範圍第48項之基板處理方法,其中前述搬送步驟係藉由將前述經曝光之基板冷卻至不結露狀態,以一邊抑制光阻進行解像反應一邊將之搬送至加熱部。
- 50如申請專利範圍第48項之基板處理方法,其中前述搬送步驟係藉由將附著於搬送至前述加熱部之基板的水分量設成較附著於經曝光後之基板的水分量少,而可一邊抑制進行光阻之解像反應一邊將之搬送至加熱部。
- 51如申請專利範圍第50項之基板處理方法,其中前述搬送步驟係藉由一邊對前述經曝光之基板供給濕度較空氣低的氣體而一邊將之搬送至加熱部,以將搬送至加熱部時附著於基板上之水分量設成較曝光後附著於基板之水分量少。
- 52如申請專利範圍第48項之基板處理方法,其中前述光阻係化學放大型光阻,該化學放大型光阻係使藉由曝光所產生之酸進行光阻之解像反應者。
- 53一種基板處理裝置,係具有:加熱部,係用以將對前述經塗布光阻之基板施予曝光之曝光部所曝光之基板進行加熱,以進行光阻之解像反應者;搬送部,係用以至少將前述經曝光之基板以抑制進行光阻解像反應之狀態而搬送至前述加熱部者;冷卻部,係用以將前述經加熱之基板冷卻而抑制進光阻解像反應者;及顯像處理部,係用以對前述經冷卻之基板進行顯像液之塗布處理者。
- 54如申請專利範圍第53項之基板處理裝置,其中前述冷卻部係用以將前述曝光部與加熱部間之基板的搬送區域,冷卻至基板不結露的狀態以抑制光阻之解像反應。
- 55如申請專利範圍第53項之基板處理裝置,其中更具有一氣體供給部,該氣體供給部係用以將前述曝光部與加熱部間之基板的搬送區域設成搬送至加熱部時附著於基板之水分量較附著於曝光後之基板的水分量少,而供給較空氣之濕度低的氣體者。
- 56一種基板處理裝置,係具有:卡閘站,係包含有一用以載置裝納有多數基板之基板卡閘的載置部、及一用以對載置於此載置部之基板卡閘進行基板交接的交接構件者;處理站,係連接於前述卡閘站,用以對前述交接構件所搬送之基板進行處理者;及界面站,係用以於前述處理站與對基板進行曝光處理之曝光裝置之間交接基板者;前述處理站並包含有一用以加熱前述經曝光之基板而進行光阻之解像反應的加熱部、一用以冷卻經前述加熱部所加熱之基板而抑制光阻進行解像反應的冷卻部、及一用以對前述基板進行塗布顯像液處理的顯像處理部;前述界面站係用以將基板冷卻至不結露的狀態以抑制光阻進行解像反應。
- 57一種基板處理裝置,係具有:卡閘站,係包含有一用以載置裝納有多數基板之基板卡閘的載置部、及一用以對載置於此載置部之基板卡閘進行基板交接的交接構件者;處理站,係連接於前述卡閘站,用以對前述交接構件所搬送之基板進行處理者;及界面站,係用以於前述處理站與對基板進行曝光處理之曝光裝置之間交接基板者;前述界面站並包含有一用以加熱前述經曝光之基板而進行光阻之解像反應的加熱部;前述處理站並包含有一用以冷卻經前述加熱部所加熱之基板而抑制光阻進行解像反應的冷卻部、及一用以對前述基板進行塗布顯像液處理的顯像處理部;前述界面站係用以將基板冷卻至不結露的狀態以抑制光阻進行解像反應。
- 58如申請專利範圍第56項之基板處理裝置,其中更具有一氣體供給部,其係用以將搬送至加熱部時附著於基板之水分量設成較附著於曝光後之基板的水分量少,而供給較空氣之濕度低的氣體至前述界面站者。
- 59如申請專利範圍第53項之基板處理裝置,其中更具有一氣體供給部,該氣體供給部係用以於基板藉著前述搬送部而由前述曝光裝置搬送至前述加熱部之間,對前述基板之被處理面供給經調整溫度及/或濕度之氣體者。
- 60如申請專利範圍第59項之基板處理裝置,其中更具有一調溫部,該調溫部係用以對由前述氣體供給部供給至基板之被處理面的氣體,調整溫度及濕度中之至少其一,以抑制進行光阻之解像反應者。
- 61如申請專利範圍第53項之基板處理裝置,其中前述光阻係化學放大型光阻,該化學放大型光阻係使藉由曝光所產生之酸進行光阻之解像反應者。
Independent claims61
391 paragraphs, as filed
Substrate processing device and substrate processing method
<p>1. . . Coating development processing system</p><p>2. . . Khazha Station</p><p>3. . . Processing station</p><p>4. . . Interface Department</p><p>5. . . Exposure processing device</p><p>10. 60. . . Spacer</p><p>70, 71, 72. . . Gas supply device</p><p>76, 76, 77. . . exhaust pipe</p><p>W. . . Wafer</p>
Fig. 1 is a plan view showing the appearance of the coating development processing system according to the first embodiment of the present invention.
Figure 2 is a front view of the coating development processing system of Figure 1.
Fig. 3 is a back view of the coating development processing system of Fig. 1.
Fig. 4 schematically shows the heating in the coating development processing system of Fig. 1. Cross-sectional view of the cooling treatment device.
Fig. 5 is an explanatory diagram showing the flow of inert gas supplied to the coating and developing processing system of Fig. 1.
Figure 6 is an explanatory diagram showing the flow of inert gas when the ambient gas in the coating and development processing system is an inert gas and is reused
Fig. 7 is a plan view showing the appearance of the coating development processing system of the first embodiment of the present invention.
Figure 8 is the front view of the coating development processing system of Figure 7
Figure 9 is an explanatory diagram of the longitudinal section of the processing station
Figure 10 is an explanatory drawing of the longitudinal section of the interface
Figure 11 schematically shows the heating in the coating development processing system of Figure 7. Cross-sectional view of the cooling treatment device.
Figure 12 shows the flow of the inert gas supplied to the interface as viewed from the side of the coating and development processing system.
Fig. 13 is a longitudinal sectional explanatory view showing the flow state of the inert gas supplied to the interface portion.
Fig. 14 is an explanatory diagram showing the state of the photoresist film exposed to the circuit pattern.
Figure 15 is an explanatory diagram of the photoresist film after development.
Fig. 16 is a plan view of a substrate processing apparatus according to a third embodiment of the present invention.
Fig. 17 shows a schematic plan view of a coating and developing device according to a fourth embodiment of the present invention.
Figure 18 shows an overview perspective view of the aforementioned coating and developing device.
Figure 19 shows a side view of an example of the shelf unit and the development unit of the aforementioned coating and development device.
Figure 20 is a side view showing an example of the shelf unit of the aforementioned coating and developing device.
Figures 21A to 21D show cross-sectional views of the CHP device installed in the aforementioned scaffold unit.
Figure 22 shows a cross-sectional view of an example of the aforementioned developing unit.
Figure 23 shows a cross-sectional view of the substrate transport member.
Fig. 24 shows a cross-sectional view of an example of the reaction suppression unit.
Figure 25 shows a perspective view of an example of an interface station.
Figures 26A~26C are explanatory diagrams of the resolution reaction of chemically amplified photoresist.
Fig. 27 shows a cross-sectional view of another example of the reaction suppression unit.
Figure 28 shows a schematic plan view of a conventional coating and developing device.
Figure 29 is used to illustrate an application example of the above implementation.
Figure 30 is used to illustrate an application example of the above implementation.
Figure 31 is a schematic plan view of a coating and developing device according to a fifth embodiment of the present invention.
Figure 32 shows an overview perspective view of the aforementioned coating and developing device.
Figure 33 shows a side view of an example of the shelf unit and the developing unit of the aforementioned coating and developing device.
Figure 34 shows a side view of an example of the shelf unit of the aforementioned coating and developing device.
Figure 35 shows a cross-sectional view of an example of the aforementioned developing device.
Figures 36A to 36D show cross-sectional views of the CHP device installed in the aforementioned scaffold unit.
Figure 37 shows a perspective view of an example of an interface station.
Figure 38 shows a cross-sectional view of an example of an interface station.
Figure 39 shows a side view of an example of the CHP device and the partition wall.
Figures 40A to 40C show explanatory diagrams of the resolution reaction of chemically amplified photoresist.
Figure 41 is a cross-sectional view showing another example of the coating and developing device.
Figure 42 shows a cross-sectional view of another example of a scaffold unit equipped with a CHP device.
Figure 43 shows a cross-sectional view of another example of the coating and developing device.
Fig. 44 is an exploded perspective view of another example of the coating and developing device.
Fig. 45 is an explanatory diagram of the sixth embodiment of the present invention.
Fig. 46 is an explanatory diagram of another example of the sixth embodiment of the present invention.
[Background of the invention]
The present invention relates to a substrate processing apparatus and a substrate processing method for performing, for example, photoresist coating processing and development processing of substrates such as semiconductor wafers and glass plates for liquid crystal displays.
For example, the light etching process in the manufacturing process of a semiconductor device is a photoresist coating process for forming a photoresist film on the surface of a wafer, an exposure process for irradiating a pattern on the wafer and exposing, and a display for developing the exposed wafer. Heat treatment and cooling treatment before image treatment, coating treatment, exposure treatment, and development treatment. These processings are processed in each processing device installed separately, and each of these processing devices continues the aforementioned series of processing to be integrated into one to form a coating development processing system.
Typically, the coating having a developing system to carry out the process within the coating yl developing processing system carrier plate portion downloaded, the coating processing apparatus developing processing apparatus, a heat treatment apparatus, the wafer processing unit for processing of the most An exposure processing device located outside the system for performing exposure processing of wafers, and an interface portion that is provided adjacent to the exposure processing device with the processing section and is configured to perform wafer transfer between the exposure processing devices and the processing section.
During wafer processing in this coating and development processing system, in order to prevent impurities such as particles from adhering to the wafer, air cleaned by an air cleaner is blown down into the coating and development processing system. On the other hand, , In order to exhaust the ambient gas in the coating and development processing system and make the wafers processed in a clean state.
In addition, in order to achieve high-sensitivity exposure, a chemically amplified photoresist is used. This chemically amplified photoresist system has a raw material polymer and an acid generator that are insoluble in, for example, an alkaline developing solution, and uses an acid catalyst to react for exposure. The unexposed part undergoes a polarity change to obtain a high resolution speed. A mask is used in the exposure processing section to expose the circuit pattern to the photoresist film, and the acid generated at this time causes a detachment reaction to the hydroxyl group for protecting the raw polymer. It is then transported to a wafer heat treatment device, and the acid catalyst reaction is accelerated by post-exposure heating (PEB) to promote the release reaction. For example, the exposed part is made into a state that can be dissolved in an alkaline developing solution. The wafer is transported to the development processing device, and the soluble part is removed with the development liquid to obtain a precise circuit pattern.
In recent years, in order to form finer and more precise circuit patterns, exposure techniques using shorter wavelengths are being developed. With such a short wavelength, it is possible to confirm molecular-level impurities that have not yet constituted a problem, such as oxygen, Hydrogen, basic substances, ozone, water vapor, etc. will have an adverse effect on the formation of precise circuit patterns. Particularly during exposure, once the aforementioned impurities adhere to the wafer, appropriate pattern exposure cannot be performed, and a reduction in the production rate is unavoidable.
Therefore, it is necessary to make it so that the wafers being processed do not adhere to the aforementioned impurities. However, if such clean air is used as conventionally used, it is not suitable because the air itself contains impurities such as oxygen.
Since the acid generated during exposure has high reactivity, it will neutralize and react with basic substances in the air during wafer transport, for example. As a result, the acid will lose its activity to form a poorly soluble chemical release layer on the surface or cause a change in the line width of the circuit pattern. In addition, the detachment reaction of the protective group is different depending on the temperature and the type of chemically amplified photoresist. For example, the detachment reaction of the protective group occurs by an acid reaction at room temperature. Therefore, during the aforementioned transportation of the PEB, a separation reaction has proceeded, resulting in pattern distortion or deterioration of reproducibility.
In the case of pattern deformation that can be ignored in the conventional art, it is necessary to improve the shape nowadays when more precise circuit patterns are required, and the conventional clean air or system structure cannot cope with such a requirement.
Moreover, when the wafer is processed between the processing section and the exposure processing section through the interface section, the neutralization of the acid or the detachment reaction of the protective group may occur after the exposure as described above. In addition, the acid does not occur before the exposure. In the case of', the state of the ambient gas inside the interface required after exposure is different. Therefore, it is desirable to form the most suitable ambient gas in the interface portion that matches the state of the wafer after exposure.
[Summary of Invention]
The object of the present invention is to provide a substrate processing device and a substrate processing method that do not adhere to the substrate such as wafers with molecular-level fine impurities.
In addition, the object of the present invention is to provide a method for preventing the adhesion of molecular-level fine impurities on substrates such as wafers, while individually suppressing the exposure of the interface portion of the substrate through the path and the exposure of the substrate after exposure to the ambient gas, and can prevent acid The substrate processing device and substrate processing method such as deactivation or pattern deformation.
Another object of the present invention is to provide a method for conveying the exposed substrate to the heating part while suppressing the photoresist resolution reaction, and by performing the heating treatment here, the width of the developing line in the substrate surface and between the substrates is increased. Uniform substrate processing device and substrate processing method.
In order to achieve the above objective, according to the present invention, a coating development processing system can be provided, which is a system for performing coating development processing of a substrate. It has a carrier to carry in and out of the substrate in the aforementioned system. The downloading section, a coating film processing device that forms a coating film on at least a substrate, a development processing device that performs development of the aforementioned substrate, a heat treatment device that performs heat treatment of the aforementioned substrate, a coating processing device and a development processing device, and The heat treatment device carries the processing section of the first conveying device that carries the substrate, and at least has an interface section of the second conveying device that conveys the substrate via a path between the processing section and the exposure processing device that performs the exposure processing of the substrate; A gas supply device that supplies inert gas to the interface portion; and an exhaust member that discharges ambient gas from the interface portion. In addition, the aforementioned heat treatment device includes a heat treatment device, a cooling treatment device, and heating. Cooling processing equipment, etc. In addition, the above-mentioned processing unit may also include other devices such as an extension device for making the substrate stand by or an attachment device for supplying a certain processing liquid on the substrate by improving the fixation of the substrate and the coating liquid.
In this way, the inert gas is supplied to the interface portion by the gas supply device, and the ambient gas in the interface portion is exhausted by the exhaust member, whereby impurities such as oxygen or water vapor can be removed from the interface portion. The ambient gas in the interface is maintained in a clean state. Therefore, it is possible to prevent impurities from adhering to the substrate, and to appropriately perform the substrate processing. In particular, if impurities adhere to the substrate during exposure processing, the impurities absorb energy such as the laser used for exposure and cannot be properly exposed. Therefore, it is maintained at the interface that passes through before the exposure processing. The state of cleanliness is important. In addition, the aforementioned inert gas is for the treatment liquid used in the coating and development processing system, such as the coating liquid of the photoresist liquid, and the inert gas of the development liquid, and does not contain oxygen, moisture, or organic matter, such as nitrogen. , Argon, neon, etc.
The present invention may include at least a gas supply device that supplies inert gas to the regions of the heat treatment device and the first conveying device in the processing section, and an exhaust member that exhausts at least the ambient gas in the region.
In this way, the inert gas is supplied not only to the interface portion but also to the processing portion, whereby impurities such as oxygen can be removed from the processing portion and the ambient gas in the processing portion can be maintained in a clean state, thereby preventing the impurities from adhering to the substrate. Especially after the coating film is formed on the substrate and heat-treated, the impurity is likely to adhere to the substrate. In this case, once the impurity is adhered, the exposure treatment cannot be appropriately performed later, so it is removed from the substrate in the processing section Impurities are important things. In addition, although the inert gas can be supplied to at least the aforementioned area of the processing section, the inert gas can also be supplied to the area other than the aforementioned area in the processing portion, that is, the area with the coating device or the development processing device.
In addition, in the present invention, there may also be a bearing for the foregoing. A gas supply device for the downloading part to supply inert gas, and discharge the aforementioned load. Ambient gas exhaust component of the downloading section.
So in carrying. The downloading part is also performed in the same manner as the aforementioned interface part and the aforementioned area of the aforementioned processing part, and the aforementioned inert gas is supplied, and the aforementioned carrying. The download part is maintained in a clean state, and impurities such as oxygen can be completely discharged from the substrate to reach the protective substrate.
In each of the above coating and development processing systems, there are spacers for blocking the ambient gas between the interface part and the processing part, the spacers have a passage for passing the substrate between the processing part and the interface part, and the aforementioned passage The port can be set to have a switch that is a free switch.
In this way, the interface part and the treatment part are separated by the partition plate, thereby suppressing the flow of the inert gas into the environment in the treatment part maintained in the clean state by the supply of inert gas as described above. gas. In addition, a passage opening is provided in the partition plate, and the passage opening can be opened and closed freely by a switch, so that the switch can be opened only when the substrate is transferred between the interface portion and the region of the processing portion. Therefore, it is possible to prevent the environmental gas of the processing part and the interface part from interfering with each other, and to maintain the environmental gas in the interface part in a clean state. In addition, the purpose of restricting the position of the passage port with the partition plate in the area of the processing section is to not directly transport the area other than the area of the processing section, that is, from the area with the coating processing device and the developing processing device. To the interface department.
In addition, in the present invention, there is used to block the aforementioned processing section and load. Other partitions of the downloading part, the other partitions have other passages for transferring substrates between the aforementioned area of the processing part and the load-carrying and downloading part, and the aforementioned other passages may also have this other passage to be free The switch of the switch.
In this way, the aforementioned processing unit and the aforementioned carrier. A partition plate is also provided between the downloading parts, and the partition plate is in the aforementioned area of the aforementioned processing part and the aforementioned load. A through port and a switch for transferring the substrate are arranged between the downloading parts, whereby the ambient gas in the processing part and the aforementioned load can be suppressed. The interference of the ambient gas in the downloading unit can maintain the ambient gas in the processing unit at a constant level. In particular, as described in item 2 of the scope of patent application of the present invention, in the case of supplying inert gas to the aforementioned processing part, the aforementioned loading can be prevented. The relatively unclean gas in the downloading section flows into the processing section, so that the ambient gas in the processing section can be maintained in a clean state, and impurities are prevented from adhering to the substrate.
In each of the above coating and development processing systems, at least a part of the ambient gas discharged from the exhaust member may be purged and sent to the gas supply device as the inert gas again. In this case, by sending the ambient gas discharged from the aforementioned exhaust member to the gas supply device again, the weight of newly necessary inert gas can be reduced, so that the amount of inert gas can be reduced.
In addition, the present invention may also be provided with a temperature adjustment member that adjusts the temperature of the aforementioned inert gas. By providing the aforementioned temperature adjusting member, the ambient gas in the coating and developing processing system supplied with the inert gas can be maintained at a constant temperature. Therefore, the substrate can be processed and transported with a constant temperature of the ambient gas.
Furthermore, in the present invention, it is more preferable to set the pressure in the interface portion to be lower than the pressure in the exposure processing apparatus.
In this way, by setting the pressure in the interface portion to be lower than the pressure in the exposure processing device, it is possible to prevent the ambient gas in the interface portion from flowing into the exposure device. Therefore, the exposure processing of the substrate of the exposure processing device is appropriately performed while maintaining a certain ambient gas.
In addition, in the present invention, the pressure in the interface portion may be lower than the pressure in the processing portion. In this way, by setting the pressure in the interface portion to be lower than the pressure in the processing portion, it is possible to prevent the ambient gas in the interface portion from flowing into the region of the processing portion. Therefore, each processing device for the substrate is provided to maintain the ambient gas of the aforementioned processing section for performing each processing of the substrate at a certain ambient gas, and each processing of the substrate can be appropriately performed.
Furthermore, in the present invention, the pressure in the aforementioned region of the aforementioned processing section can also be set to be higher than the aforementioned bearing. The download department is under high pressure. In this way, the pressure in the aforementioned area of the aforementioned processing part is set to be greater than the aforementioned bearing. The pressure of the download part is high, which can prevent the ambient gas in the interface part from flowing into the area of the processing part. Therefore, in the same manner as described above, the ambient gas in the processing section area can be maintained at a certain ambient gas, and each processing of the substrate can be appropriately performed.
Furthermore, in the present invention, the pressure in the region of the processing section may be set to be lower than the pressure in the coating processing device and the development processing device of the processing section. In this way, by setting the pressure in the region of the processing section to be higher than the pressure in the coating processing device and the development processing device, the ambient gas in the coating processing device and the development processing device is prevented from flowing into the region Inside. Therefore, compared with the processing devices such as the heat treatment device in the aforementioned area, the ambient gas of the coating processing device, which controls the more stringent ambient gas, can be maintained at a certain ambient gas, and this coating processing device can be performed appropriately. Important coating processing and development processing.
In each of the coating processing apparatuses described above, the pressure in the gate chamber may be set higher than the pressure outside the coating and developing processing system. In this way, by setting the pressure in the lock chamber to be higher than the pressure outside the coating and developing processing system, it is possible to prevent the ambient air outside the coating and developing processing system from flowing into the lock chamber. Therefore, it is possible to suppress contamination of the ambient gas in the gate chamber where the substrate processing is performed due to the relatively dirty ambient gas outside the coating development processing system. In addition, the pressure outside the coating development processing system means the pressure in the room where the coating development processing system is installed, for example, the storage room.
Another aspect of the present invention is to provide a coating development processing system, which is provided with a coating processing device for at least forming a coating film on a substrate in a gate; a development processing device for performing development of the aforementioned substrate; and performing a heat treatment of the aforementioned substrate The heat treatment device; the processing section of the substrate conveying device that carries the aforementioned substrates in and out of the coating processing device, the development processing device and the heat treatment device; and the exposure processing device that performs the exposure processing of the aforementioned substrate in the aforementioned processing section The interface portion between the substrates is transported through the path, and the interface portion is equipped with a first heat treatment device for heat treatment of the substrate before exposure; a first transport device for transporting the substrate before exposure; The second heat treatment device for heat treatment; the second conveying device for conveying the exposed substrate; the pre-exposure area having the first heat treatment device and the second conveying device in the interface portion has a first inert gas supply A gas supply device, and a first exhaust member that discharges the ambient gas in the area before exposure; and a post-exposure area having the second heat treatment device and the second conveying device in the interface portion has a device for supplying inert gas A second gas supply device, and a second exhaust member that discharges ambient gas in the area after exposure. In addition, the heat treatment device, the first heat treatment device, and the second heat treatment device include a heat treatment device, a cooling treatment device, and heating. Cooling processing equipment, etc. In addition, the above-mentioned processing unit may also include other devices such as an extension device for making the substrate stand by or an attachment device for supplying a certain processing liquid on the substrate by improving the fixation of the substrate and the coating liquid.
According to the present invention, inert gas is supplied to the area before exposure through the first gas supply device at the interface portion, and the ambient gas in the area before exposure is discharged through the first exhaust member, whereby It removes impurities such as oxygen or water vapor to maintain a clean state. Therefore, between the heating process before the exposure process and the exposure process, the substrate can be transported in a clean atmosphere and the adhesion of impurities can be prevented. In particular, when the substrate on which the coating film is formed is easily attached to the substrate after the heat treatment, when the impurity is attached to the substrate during the exposure process, the impurity will absorb the energy of the laser light used in the exposure, so that There is a possibility that the exposure process cannot be appropriately performed. However, since the pre-exposure area of the interface portion that passes through before the exposure process is maintained in a clean state in this way, the substrate can be appropriately processed.
In addition, the above-mentioned inert gas system is used in the treatment system for coating the pixel electrode. For example, the coating solution and the pixel electrode solution are inactive gases, which do not contain oxygen, moisture, or organic matter, such as nitrogen, argon, Neon etc.
In addition, the second gas supply device supplies the inert gas to the exposed area, and the second exhaust member discharges the ambient gas in the exposed area, whereby the same can be achieved as in the area before exposure Maintain the atmosphere of the exposed area in a clean state. Especially in the case of a chemically amplified photoresist that is used on a substrate to form a circuit pattern by the catalytic reaction of an acid, once the impurity adheres to the substrate after the exposure treatment, the acid loses its activity.' However, the exposure treatment is done in this way The exposed area of the interface portion that passes thereafter is maintained in a clean state, so it is possible to prevent the acid from deactivating and appropriately process the substrate.
In addition, since the inert gas is supplied to each area by the respective gas supply device, it is possible to maintain the ambient gas peculiar to each area in the area before the exposure and the area after the exposure.
Since the environment gas unique to each area can be maintained, the second gas supply device can also supply inert gas with a lower temperature than the inert gas supplied by the first gas supply device, as in the patent application of the present invention It is also possible to supply an inert gas with a low oxygen concentration as described in the third top of the range.
In addition, when the first gas supply device supplies, for example, room temperature inert gas to the area before exposure, the second gas supply device supplies low temperature inert gas lower than room temperature to maintain the ambient gas in the area after exposure at a low temperature. status. Especially in the aforementioned chemically amplified photoresist, when the protective group used to protect the hydroxyl group of the raw polymer will also have the property of detachment reaction at room temperature, if the ambient gas temperature in the exposed area is above room temperature, The removal reaction of the protective group proceeds on the substrate being transported in the area after the exposure, but the removal reaction of the protective group during the transport can be suppressed because the area after the exposure is maintained at a low temperature. In this way, the formation of the circuit pattern can be performed satisfactorily. In addition, by supplying an inert gas with a low oxygen concentration through the second gas supply device, the oxygen concentration of the ambient gas in the area after exposure can be maintained at a low state. This prevents the acid from losing its activity.
In addition, in the present invention, there may be a spacer between the area before exposure and the area after exposure for blocking the area between the area before exposure and the area after exposure.
According to the present invention, the pre-exposure area and the post-exposure area of the interface part are blocked by the spacer to prevent mutual interference of ambient gas, so the area before and after the exposure can be maintained to maintain the uniqueness of each area Of ambient gas. Especially when the area after exposure is maintained at a low temperature, it is effective to provide spacers between the areas in this way.
In addition, the present invention may also have other spacers for blocking the ambient gas between the processing part and the pre-exposure area, and the other spacers have a means for transferring the substrate between the processing part and the pre-exposure area. The first passage port and the second passage port for transferring the substrate between the processing section and the area after the exposure, the first passage port has a first switch for freely opening and closing the first passage port, and the second passage port The port has a second switch for freely opening and closing the second passage port.
According to the present invention, other spacers are used to block the space between the processing section and the interface section, and as described above, the ambient gas in the processing section can generally be prevented from flowing into the area before exposure of the interface section that maintains a clean state with inert gas. And within the area after exposure. In addition, by providing the first switch which is a free switch at the first passage port, the first switch can be opened to allow the substrate to pass through, for example, when the substrate is transferred from the processing unit to the area before exposure. In addition, by providing a free-switching second switch at the second passage port, it is possible to open the second switch and allow the substrate to pass through, for example, when the substrate is exchanged from the processing section to the area after exposure. Therefore, it is possible to prevent the interference between the environmental gas of the processing part and the interface part, and to maintain the pre-exposure area and the post-exposure area of the interface part in a clean state.
In addition, the present invention can also adjust the temperature of the aforementioned inert gas. In this way, by adjusting the inert gas to a certain temperature, the ambient gas in each area where the inert gas is supplied can be maintained at a certain temperature.
The pressure in the interface portion of the present invention is preferably set to be lower than the pressure in the exposure processing apparatus. According to this structure, by setting the pressure in the interface portion to be lower than the pressure in the exposure processing device, the ambient gas in the area before and after exposure of the interface portion will not flow into the ambient gas. The ambient gas is strictly controlled. Inside the exposure processing device.
In addition, the substrate processing apparatus of the present invention from another point of view has a processing section for coating the pixel electrode processing of the substrate; at least the interface between the processing section and the exposure processing apparatus for performing the exposure processing of the substrate to transport the substrate through a path Section; disposed in the interface section and temporarily holding the processing chamber from the processing section and transferred to the substrate of the exposure processing section; an ambient gas controller to control the ambient gas in the processing chamber.
Since the present invention has a processing chamber structure that is arranged in the interface portion and temporarily holds the substrates transferred from the processing portion and transferred to the exposure processing portion, it can control, for example, the time-dependent change of the photoresist before exposure to prevent Changes in photoresist characteristics. With the result, the uniformity of the line width can be improved.
Here, it will be explained that the ambient gas controller is a component used to depressurize the processing chamber and supply inert gas or dry air to the processing chamber.
In addition, the processing chamber can have a clean room for temporarily holding and cleaning the substrate introduced into the processing chamber; a buffer chamber for holding the substrate; and a transport device for transporting the substrate between the clean room and the buffer chamber. In addition, it is preferable that the buffer chamber has a through port for directly carrying out the substrate from the exposure processing apparatus.
From other viewpoints, the substrate processing apparatus of the present invention has at least a coating film processing device for forming a coating film on a substrate; a development processing device for developing the aforementioned substrate; a heat treatment device for performing heat treatment of the aforementioned substrate; These coating film processing devices, development processing devices, and heat treatment devices are conveying devices for carrying in and out of the aforementioned substrates; and blowing devices that blow inert gas to the substrates conveyed by the aforementioned conveying devices.
Since the present invention has an air blowing device that blows an inert gas to the substrate conveyed by the aforementioned conveying device, for example, hydrolysis of the photoresist due to water molecules in the atmosphere during the transfer of the substrate after the photoresist coating does not occur, or It is combined with the oxygen in the atmosphere to cause the image signal line noise of the pattern resolution.
Specifically, for example, the conveying device has a pin group for holding a substrate, and the air blowing device has a blowing port for blowing inert gas from above the pin group, and a cover is provided on the upper surface. The so-called air outlets can be arranged in a large number according to the pin group, and can be arranged in a large number according to the shape of the substrate. Furthermore, the aforementioned air blowing device may also have a temperature control mechanism that controls the temperature of the inert gas or a humidity control mechanism that controls the humidity of the inert gas. In addition, it is most efficient when the air blowing device blows inert gas when transporting the substrate from the coating device to the heat treatment device.
In addition, the substrate processing apparatus of the present invention from another point of view is characterized by having a reaction suppression section for applying a photoresist to suppress the photoresist's resolution reaction on the exposed substrate; and heating the substrate processed by the reaction suppression section The heating part for the photoresist's resolution reaction; the cooling part for cooling the substrate heated by the aforementioned heating part and inhibiting the photoresist's resolution reaction; for applying the developer solution to the substrate cooled by the aforementioned cooling part The development processing section of processing.
Specifically, the substrate processing apparatus of the present invention has: a mounting portion that mounts a substrate chuck for storing a large number of substrates, and a chucking member that transfers the substrate to the substrate chuck that is placed on the mounting portion Station; a processing station connected to the card gate station to process the substrates transported by the aforementioned transfer member; an exposure device set on the opposite side of the card gate of the aforementioned processing station; and the opposite side of the card gate connected to the processing station The interface station used to transfer the substrate between the processing station and the exposure device. The interface station has a reaction suppression unit that performs a photoresist-inhibiting resolution reaction process on the substrate exposed by coating the photoresist. The aforementioned processing station is It includes a heating unit that heats the substrate cooled by the reaction suppression unit to perform a photoresist resolution reaction; a cooling unit that cools the substrate heated by the heating unit to suppress the photoresist resolution reaction; and to the foregoing The developer liquid processing section where the substrate is subjected to the developer liquid coating processing.
The substrate processing apparatus constructed in this way makes the photoresist resolution reaction between the exposure device transported to the heating unit and the photoresist suppressed, and the heating unit promotes the aforementioned solution under the same conditions on the substrate that has undergone the aforementioned resolution reaction. Like reaction. Therefore, when the development process is performed, since the entire substrate is covered and the degree of progress of the aforementioned resolution reaction is complete, the occurrence of unevenness in the development line width can be suppressed.
At this time, it is better to install the reaction suppression section near the exposure device. In this case, since the transport time between the exposure device and the reaction suppression section is shortened, the aforementioned resolution reaction of the substrate transported to the reaction suppression section proceeds The degree is more complete and can improve the uniformity of the image line width.
Here, it should be explained that the aforementioned reaction inhibiting portion preferably has the characteristic of cooling the substrate after the photoresist is coated and exposed without dew condensation, and inhibiting the resolution reaction of the photoresist. In addition, it is characterized in that the amount of moisture attached to the exposed substrate after the photoresist is applied is made less than the amount of metal attached to the substrate when the photoresist is transported to the reaction suppression unit, thereby suppressing the progress of the photoresist's resolution reaction, for example, It is preferable to supply the substrate with a gas lower than the air humidity of the ambient gas in which the reaction suppression unit is installed, so that the amount of moisture adhering to the substrate is made smaller than the amount of metal adhering to the substrate when transported to the reaction suppression unit.
In addition, the aforementioned photoresist is a chemically amplified photoresist in which, for example, an acid generated by exposure undergoes a photoresist resolution reaction. Here, the so-called photoresist resolution reaction is used to decompose the acid generated by exposure. It will decompose the resin used as the raw material of the photoresist, change the molecular structure and show a soluble reaction to the developer.
In this regard, the substrate processing apparatus of the present invention is characterized in that the exposed substrate is heated in the heating section to cause the photoresist to undergo a resolution reaction, and then the substrate is cooled to prevent the photoresist from undergoing a resolution reaction, and then the substrate is subjected to In the substrate processing method of the coating process of the developing solution, the exposed substrate is transported to the heating part while suppressing the resolution reaction of the photoresist.
In this method, there is an exposure section for exposing the substrate coated with photoresist; a heating section for heating the previously exposed substrate to perform the photoresist resolution reaction; cooling the substrate heated by the heating section to suppress the progress The cooling part for the resolution reaction of the photoresist; and the developer treatment part for applying the developer solution to the cooled substrate, and the exposed substrate is used to suppress the resolution state of the photoresist through the substrate The transfer device is implemented as a substrate processing device characterized by being transferred to a heating section.
At this time, for example, the exposed substrate is cooled to a state where no condensation occurs, and the photoresist resolution reaction is suppressed while being transported to the heating section. In addition, it is also possible to make the amount of moisture attached to the substrate conveyed by the heating part less than the amount of moisture attached to the substrate after exposure, and convey to the heating part while suppressing the progress of the photoresist resolution reaction. In this case, While supplying the above-mentioned exposed substrate with a gas having a lower humidity than the air, it is transported to the heating section.
Specifically, the substrate processing apparatus of the present invention is characterized by having a mounting portion for mounting and storing a plurality of substrates with a substrate stopper, and transferring and transferring substrates to the substrate stopper mounted on the mounting portion The chucking station of the component; the processing station connected to the chucking station to process the substrates conveyed by the transfer component; the exposure device installed on the opposite side of the chucking of the processing station; and the card connected to the processing station The interface station on the opposite side of the gate is used to transfer the substrate between the processing station and the exposure device. The interface station includes a heating part that heats the exposed substrate to perform the photoresist resolution reaction; The station includes a cooling unit for cooling the substrate heated by the heating unit to suppress the resolution reaction of photoresist; and a developer processing unit for coating the substrate with a developer. The interface station is It has a structure to suppress the resolution reaction of the photoresist and cool it so that no condensation occurs on the substrate.
In this way, the present invention can suppress the resolution reaction of the photoresist conveyed from the exposure device to the heating section, and the substrate with the complete resolution reaction in the heating section can be promoted under the same conditions as the foregoing resolution reaction. . Therefore, when the development process is performed, the degree of the aforementioned resolution reaction is complete because the entire substrate is covered, so that the occurrence of uneven development line width can be suppressed.
In addition, the aforementioned photoresist is, for example, a chemically amplified photoresist in which an acid generated by exposure undergoes a photoresist's resolution reaction. The so-called photoresist's resolution reaction here means that the acid generated by exposure decomposes light. The raw material resin, which is the main component of the barrier material, changes its molecular structure to be soluble in the developer.
[Practice of the invention]
Figure 1 is a top view of the coating and development processing system (substrate processing apparatus) 1 of the present invention, Figure 2 is a front view of the coating development processing system 1 and Figure 3 is a rear view of the coating development processing system 1.
The coating and development processing system 1 is as shown in FIG. 1. In the gate chamber 1a, for example, 25 wafers W are used as the gate unit, and the coating and development processing system 1 is carried in and out from the outside, and the gate C is performed As a carrier for moving in and out of wafers. The card gate station of the downloading department 2, the processing station 3 which is a processing unit that multi-stages various processing devices that perform certain processing on wafers in the form of a leaf in the coating and development process, and is adjacent to the coating and development process The interface portion 4 for transferring wafers between the exposure processing devices 5 installed in the system 1 is connected into an integrated structure.
In the card gate station 2, a fixed position on the card gate mounting table 6 which becomes the placing part, so that the majority of the card gates C are freely placed in a row in the X direction (the vertical direction in the first figure). With respect to the card gate arrangement direction (X direction) and the wafer arrangement direction (Z direction; vertical direction) of the wafer W accommodated in the card gate C, there is a transferable wafer carrier 7 along the It is installed in a freely movable state along the conveying path, and can selectively access each card gate C.
The wafer transport body 7 has a function of aligning the position of the wafer. The structure of the wafer transport body 7 will be described later, and it is possible to access the extension device 32 and the attachment device 31 belonging to the third processing device group G3 on the processing station 3 side. Between the card gate station 2 and the processing station 3 is provided a partition plate 10 for blocking the ambient gas of the card gate station 2 and the ambient gas of the processing station 3. In addition, the spacer plate 10 is provided with a through port 11 at a position opposite to the extension device 32 and the attachment device belonging to the third processing device group G3, and the wafer W can be held in the card by the wafer transport body 7 Move in and out between gate station 2 and processing station 3. In addition, a switch 12 capable of freely opening and closing the passage port 11 is provided here. The switch 12 is opened only when the wafer W passes through the passage port, and the switch 12 is closed at all other times.
The processing station 3 is provided with a main conveying device 13 as a first conveying device at its center, and various processing devices are arranged in multiple stages around the main conveying device 13 to constitute a processing device group. The coating development processing system 1 is equipped with four processing device groups G1, G2, G3, G4, the first and second processing device groups G1, G2 are arranged on the front side of the coating development processing system 1, and the third processing The device group G3 is arranged adjacent to the gate 2, and the fourth processing device group G4 is arranged adjacent to the interface unit 4. Furthermore, functionally, the fifth processing device group G5 indicated by the broken line can be separately arranged on the back side. The aforementioned main transport device 13 can carry in and out the wafer W to various processing devices to be described later, which are arranged in the processing device groups G1, G3, G4, and G5.
The first processing device group G1, as shown in FIG. 2, has a photoresist coating device 17 for coating a photoresist liquid on a wafer W, and a development processing device 18 for developing a wafer W after exposure processing. Bottom-up order two-stage configuration. In the second processing device group G2, the photoresist coating device 19 and the development processing device 20 are also arranged in a two-stage stacked arrangement in order from the bottom to the top. In addition, the photoresist coating device 17 or 19 and the development processing device 18 or 20 are provided with an ambient gas control device (not shown in the figure) to maintain the ambient gas in each device at a certain ambient gas. It can maintain a certain pressure while containing the clean environment gas.
As shown in Fig. 3, the third processing device group G3 is a cooling device 30 for cooling the wafer W, an adhesion device 31 for improving the fixation of the photoresist liquid and the wafer W, and the wafer W is on standby The extension device 32, the cooling devices 33, 34 for cooling the wafer W after the development process, and the baking devices 35, 56 after the heating process for the wafer W after the development process sequentially overlap seven stages from bottom to top .
The fourth processing device group G4 is, for example, the cooling device 40, the stretching devices 41, 42 that place the exposed wafer W and put it on standby, and the device that heats the exposed wafer W and then cools it to a certain temperature. heating. Cooling treatment devices 43, 44, 45 (PEBCOL in Figure 3), heating to evaporate the solvent in the light liquid and then cooling to a certain temperature. The cooling treatment devices 46, 47 (PRE/COL in Figure 3) are stacked in eight stages sequentially from bottom to top.
The aforementioned heating. The cooling processing device 43 is shown in FIG. 4, and the base 50 in the gate chamber 43a has a disc-shaped hot plate 51 for heating the substrate, and moves on the hot plate 51 to receive it from the hot plate 51 A cooling plate 52 for cooling the wafer W. The wafer W is heated continuously in the same device. In the cooling process, the heat given to the wafer W can always be kept constant due to heating. Also, other heating. The cooling devices 44 to 47 also have the same configuration.
The central part of the interface part 4 is provided with a wafer transfer body 55 written as a second transfer device. This wafer transport body 55 can freely rotate in the X direction (up and down direction in Figure 1), Z direction (vertical direction) and theta direction (rotation direction centered on the Z axis). For the fourth process The extension devices 41, 42, the peripheral exposure device 56, and the exposure processing device 5 of the device group G4 are accessible, and are configured to be able to transport wafers W to each device.
Between the interface part 4 and the processing station 3 is provided a spacer 60 for shielding the ambient gas in the interface part 4 from the ambient gas of the processing station 3. In addition, the spacer plate 60 is provided with a passage 61 at a position opposite to the extension devices 41 and 42 belonging to the fourth processing group G4, and the wafer transport body 55 is formed between the processing station 3 and the interface 4 Wafer W can be moved in and out. In addition, this passage port 61 is provided with a switch 62 that can freely open and close the passage port 61, and the switch 12 is opened only when the wafer W passes through the passage port, and the switch 12 is closed at all other times.
In addition, an exposure processing device 5 that performs exposure processing of the wafer W is installed adjacent to the interface portion 4. The exposure processing device 5 is sealed by the shutter chamber 5a of the exposure processing device 5, and the structure can strictly control the ambient gas in the exposure processing device 5. In addition, on the side of the interface portion 4 of the gate chamber 5a, a passage port 65 for carrying the wafer W in and out of the interface portion 4 is provided, and this passage port 65 is provided with a switch 66 capable of opening and closing the passage port 65 freely.
The areas of the coating and development processing system 1 described above, namely, the card gate station 2, the processing station 3, and the upper part of the interface part 4 are as shown in Fig. 5. The gas supply device 70 for supplying inert gas is separately installed. 71 and 72, and the inert gas can be supplied from the gas supply device 70 to the card gate station 2, from the gas supply device 71 to the processing station, and from the gas supply device 72 to the interface 4, respectively.
Filter devices 70a, 71a, 72a are provided in each of these gas supply devices 70, 71, 72, and each of these filter devices 70a, 71a, 72a is equipped to adjust the inert gas supplied from a supply source not shown in the figure. The temperature to a certain temperature and humidity. Humidity control components, ULPA filters to remove particles in non-reactive gases, and chemical filters to neutralize alkaline components contained in non-reactive gases. Therefore, each area of each coating development processing system 1, that is, the card gate station 2, the processing station 3, and the interface portion 4 can be supplied with inert gas purified by temperature and humidity adjustment in each area.
On the other hand, the lower part of each area of the card gate station 2, the processing station 3, and the interface part 4 are respectively provided with exhaust pipes 75, 76, 77 which are used as exhaust components, and these exhaust pipes 75, 76, 77 are connected The exhaust pipe 78 in the factory is configured to exhaust the ambient gas in each area from the coating development processing system 1. Here, the inert gas supplied from the above-mentioned gas supply devices 70, 71, 72 to the aforementioned areas can pass through the areas and be discharged from the exhaust pipes 75, 76, 77, which can remove impurities, such as oxygen, in each area. , Ozone, water vapor, etc. to maintain a clean environment in each area. In addition, the pressure in each area can be controlled at a certain pressure by adjusting the amount of inactive gas supplied by the gas supply devices 70, 71, 72 corresponding to each area.
Next, the procedure of the light etching process performed in the coating development processing system 1 constructed as described above will be described.
First, before starting to process the wafer W, the gas supply devices 70, 71, 72 are used to process each area in the coating and development processing system 1, namely, the card gate station 2, the processing station 3, and the interface unit 4 Adjust to a certain temperature and humidity, such as 23°C, 45%, and supply inert gas from which particles have been removed. As for the ambient gas in each area, after replacing it with a clean ambient gas that does not contain impurities such as particles and oxygen, keep it in this state. In addition, the pressure P1 of the card gate station 2 at this time, the pressure P2 of the processing station 3, the pressure P3 of the interface part 4, and the pressure P4 in the exposure processing device 5 are set to P4>P3, P3<P2, P2>P1 In order to suppress the ambient gas in the interface portion 4 from flowing into the exposure processing device 5, and to suppress the ambient gas in the card gate station 2 and the interface portion 4 from flowing into the processing station 3.
Moreover, as shown in Figure 1, the pressure P2 of the processing station 3 is set to be lower than the pressure P5 in the above-mentioned photoresist coating devices 17 and 19 and the development processing devices 18 and 20 that independently control the ambient gas. The barrier coating device 17 and other devices prevent the inflow of ambient gas in the processing station 3 other than these devices. Moreover, the aforementioned pressures P1 to P5 are set to be higher than the pressure in the cooling chamber of the coating and development processing system 1 to prevent the ambient air in the clean room containing impurities, particles, etc. from directly flowing into the coating and development processing system 1.
As for the start of wafer W processing, first, at the gate station 2 that maintains a clean atmosphere, the wafer carrier 7 takes out a piece of unprocessed wafer W from the gate C, and carries it in from the passage port 11 to maintain it in a clean environment. When the attachment device 31 of the processing station 3 is in the gas, the switch 12 is turned off again.
Next, in the attaching device 31, the wafer W coated with an adhesion enhancer such as HMDS to improve the adhesion with the photoresist liquid is transported to the cooling device 30 by the main transport device 13 and cooled to a certain temperature. Thereafter, the wafer W is transported to the photoresist coating device 17 or 19 and subjected to a photoresist coating process. The wafer W after forming the photoresist film is transported to be heated. Cool the processing device 46 or 47 (PRE/COL in Figure 3) and apply heating. Cooling treatment. At this time, the heating process and the cooling process are not performed sequentially in each device separately installed, but the heating is performed in a single device like the heating and cooling processing devices 46, 47. In the cooling process, the time from the heating process to the cooling process of the wafer W can always be kept constant, so the heat to the wafer W by heating can be made the same between the wafers W. In addition, in the present embodiment, heating is used for all heating and cooling processing from coating processing to developing processing. Since the cooling devices 43 to 47 are performed, the time required from the coating process to the development process can be set to be the same for all the wafers W.
Thereafter, the wafer W is transported to the stretching device 41 and when the switch 62 is opened, the wafer W transport body 55 receives the wafer W from the stretching device 41 and transports it to the peripheral exposure in the interface portion 4 of the clean atmosphere.Processing device56. Processing device 56. As for the switch 62, it is closed again when the wafer W is transferred in and out. After the peripheral portion of the wafer W is exposed in the peripheral exposure processing device 56, the wafer W is transported from the passing port 65 to the exposure processing device 5. At this time, the switch 66 is opened, and when the wafer W is transported into the exposure processing apparatus 5, the switch 66 is closed again.
Next, the wafer W is exposed to a certain pattern in the exposure processing device 5, and the wafer W after the exposure is again passed through the interface portion 4 by the transport body 50 and is transported to the stretching device 42 in the processing station 3. The wafer W is transported to be heated by the main transport device 13. The cooling processing device 43, 44, or 45 performs heating and cooling processing after the exposure processing in sequence.
After that, the wafer W is transported to the development processing device 18 or 20 and undergoes development processing. The developed wafer W is transported to the post-baking device 35 or 36 for heating, and then transported to the cooling device 33 or 34 to be cooled to a certain temperature, and transported to the extension device 32 of the third processing device group. Here, the wafer W is transported back to the card gate C of the card gate station 2. Based on the above project, a series of light etching projects are ended.
According to the above implementation mode, since the inactive gas is supplied to each area of the card gate station 2, the processing station 3 and the interface part 4, it is possible to reduce and remove impurities or particles such as oxygen in each area to maintain the area in each area. For clean ambient gas. Therefore, it is possible to prevent impurities such as oxygen or fine particles from adhering to the wafer W being processed, and it is possible to appropriately perform the transfer of the wafer W and the respective processes in the coating and development processing system 1. In particular, the exposure processing device 5 is greatly affected by impurities such as oxygen. Therefore, in terms of removing impurities such as oxygen in the interface portion 4, it is possible to prevent the impurities from adhering to the wafer W before being loaded into the exposure processing device 5. Therefore, the production of the wafer W The rate contributes greatly. In addition, the shorter the wavelength of the laser light used in the exposure processing device 5, the greater the influence of impurities. Therefore, the use of a short wavelength, for example, the use of 157 nm laser light has a greater effect.
In addition, the pressure P4 in the exposure processing device 5 is set higher than the pressure P3 of the interface part 4, and the pressure P3 of the interface part 4 and the pressure P1 of the card gate station 2 are set to be lower than the pressure P2 of the processing station 3. The ambient gas in the interface portion 4 is suppressed from flowing into the exposure processing device 5, and the ambient gas in the interface portion 4 and the card gate station 2 can be suppressed from flowing into the processing station 3. In this way, the ambient gas in the exposure processing device 5 and the processing station 3 can be maintained at a constant level.
In addition, the pressure P2 of the processing station 3 is set to be lower than the pressure P5 in the photoresist coating devices 17, 19 and the development processing devices 18, 20 of the processing station 3, so that the inert gas of the processing station 3 can be prevented from flowing into the aforementioned photoresist The coating device 17 and the like can perform the coating process and the development process of the wafer W in a certain ambient gas.
Furthermore, the pressures P1~P5 in the aforementioned areas are set to be higher than the pressure in the clean room, so that the ambient gas in the clean room with more impurities or particles can be prevented from directly flowing into the processing station 1 and polluting the coating and developing processing system 1 Inside.
In addition, a partition plate 10' is provided between the card gate station 2 and the processing station 3, and a partition plate 60 is provided between the processing station 3 and the interface section 4. The switches 12 and 62 are installed on these equal partition plates 10 and 60, so that each is further suppressed. The "ambient gas between regions" enables each region to process the wafer W in a certain ambient gas.
The inert gas is adjusted to a certain temperature and humidity and then supplied to each of the above-mentioned regions, so that the above-mentioned each region can be maintained at a certain temperature and humidity so that the wafer W can be processed under the same conditions through the path.
The above-mentioned implementation mode is of course that the ambient gas in each area discharged by the exhaust pipes 75, 76, 77 is discharged to the outside of the coating and development processing system in its original state, however, it is also possible to supply more than the ambient gas as a secondary gas. The device uses the inert gas supplied by 70, 71, 72. In this case, for example, as shown in Figure 6, the exhaust pipes 75, 76, 77 are provided with a main exhaust pipe 90 communicating with each of the exhaust pipes 75, 76, 77, and the main exhaust pipe 90 is connected to each of the aforementioned gases. The supply device is set at 70, 71, 72. In addition, the main exhaust pipe 90 is provided with a filter 91 such as an ozone filter, a silicone filter, and a deoxidizer filter, and a fan 92. With this configuration, the ambient gas discharged from each area can be cleaned and supplied to each gas supply device 70, 71, 72 and reused as an inert gas. In addition, the filter 91 has a function of removing impurities such as oxygen, and can remove impurities mixed with the ambient gas passing through each area. In addition, instead of the filter 91, a device capable of removing oxygen, ozone, water vapor and the like may be additionally provided to purify the aforementioned ambient gas.
In this way, by reusing the ambient gas discharged from each exhaust pipe 75, 76, 77 as an inert gas, it is possible to reduce the energy required for adjusting the temperature of the new inert gas quantity to be supplied.
In the above implementation mode, the inert gas is supplied to the entire area of the card gate station 2, the processing station 3 and the interface part 4. However, it is also possible to supply the inert gas only to the interface part 4. By supplying the inert gas to the interface portion 4 in this way, the impurities in the interface portion 4 are removed, and the impurities before and after the exposure process, which are most susceptible to the influence of the impurities, are prevented from adhering to the wafer W.
In addition, only the inert gas may be supplied to the boundary 4 and the processing station 3. In this way, not only the inert gas is supplied to the aforementioned interface portion 4 and the processing station 3, so that most of the processing station 3 for coating and developing processing can maintain a clean atmosphere, and the processing of the wafer W can be maintained. It is carried out in a clean environment.
In addition, the illustrated implementation mode is certainly related to the coating development processing system of the wafer W in the light etching process of the semiconductor wafer device manufacturing process. However, the present invention can also be applied to the substrate of the semiconductor wafer, such as LCD Substrate coating and development processing system.
As described above, according to the present invention, since inert gas is supplied to the coating and development processing system, molecular-level impurities such as oxygen, ozone, and organic matter can be prevented from adhering to the substrate, so that the substrate can be processed appropriately without being affected by the impurities. In order to achieve an increase in the production rate.
In particular, by removing impurities in the interface portion, a substrate that is not contaminated by impurities can be carried into the exposure processing device to appropriately perform the exposure processing of the substrate.
(The second implementation mode)
FIG. 7 is a top view of the coating and development processing system 101 of the second embodiment, and FIG. 8 is a front view of the coating and development processing system 101.
The coating development processing system 101 is contained in the gate chamber 101a as shown in FIG. 7, and the coating development processing system is carried in from the outside with, for example, 25 wafers W as the gate unit. The card gate station 102 of the circle W. In the coating development process, various processing devices that perform certain processing on the wafer W in a leaf type are configured into a multi-stage processing station 103 as the processing section, and the coating development process is connected The exposure processing apparatus 105 installed in the processing system 101 is configured to integrally connect the interface portion 104 for transferring the wafer W.
The card gate station 102 is located at a certain position on the card gate placing table 106 as a placing part, and most of the card gates C are set to be freely placed in a row in the X direction (1 vertical direction in Fig. 7). The transferable wafer carrier 107 is arranged along the transfer path 108 in the direction of the card gate arrangement (X direction) and the wafer arrangement direction (Z direction; vertical direction) of the wafer W containing the card gate C. Move freely, and can selectively access to each card gate C.
The transport body 107 has a function for aligning the position of the wafer W. This conveying body 107 is the same as in the case described later, and is configured to allow access to the extension device 132 and the attachment device 131 belonging to the third processing device group G3 on the processing station 103 side.
The processing station 103 is provided with a main transfer device 113 as a substrate transfer device on the side of the interface unit 104, and three processing device groups G1, G2, G3 are arranged on the card gate 102 side. Each processing device in each processing device group G1, G2, G3 is arranged in multiple stages. While sandwiching the third processing device group G3, the first processing device group G1 is arranged on the front side of the development processing system 101, and the second processing device group G2 is arranged on the back side of the development processing system 101. The aforementioned main transfer device 113 is able to carry in and out the wafer W to and from the various processing devices to be described later, which are arranged in these processing device groups G1, G2, and G3. G4 and G5 can also move in and out of wafer W.
In the first processing device group G1, for example, as shown in FIGS. 8 and 9, the photoresist coating devices 117 and 118 for coating the photoresist liquid on the wafer W are arranged in two stages in order from the bottom. In the second processing device group G2, the development processing devices 119 and 120 for performing the development processing on the wafer W after the exposure processing are arranged in two stages in order from the bottom. The third processing device group G3 includes a cooling device 130 for cooling the processed wafer W, an attachment device 131 for improving the fixation of the photoresist liquid and the wafer W, an extension device 132 for waiting the wafer W, and a The cooling devices 133 and 134 for cooling the wafer W after the development process and the baking devices 135 and 136 for heating the wafer W after the development process are used to sequentially stack seven stages from the bottom.
The interface portion 104 has a fourth processing device group G4 equipped with a first heat treatment device, a pre-exposure area S1 where the first wafer carrier 140 is arranged as the first heat treatment device, a fifth processing device G5 equipped with a second heat treatment device, And it arrange|positions the area S2 after exposure as the 2nd wafer conveyance body 141. In addition, a spacer is used to block the ambient gas in the area S1 before exposure and the area S2 after exposure, so that the area S1 before exposure and the area S2 after exposure are set to different ambient gases.
In the fourth processing device group G4, for example, the cooling device 150, the extension devices 151 and 152 that are used for temporary standby on which the wafer W before the exposure process is placed, and the wafer W before the exposure process is heated to put it in the photoresist liquid. The solvent evaporates, and then it is cooled to a certain temperature and heated. The cooling processing devices 153, 154, 155, 156 (PRBAKE/COL in Figure 9), etc., are stacked in seven stages in order from the bottom.
The aforementioned heating. As shown in FIG. 11, the cooling processing device 153 has a disk-shaped hot plate 158 for heating the wafer W on the base 153b in the gate chamber 153a, and moves on the hot plate 158 from the hot plate 158 There is a cooling plate 159 that receives the wafer W and cools it. And it constitutes continuous heating of wafer W in the same device. The cooling process can keep the thermal process of the wafer W constant by heating. Also, other heating. The cooling processing devices 154 to 156 also have the same configuration.
The first wafer carrier 140 is configured to move in the X and Y directions (up and down, left and right directions in Figure 7), Z direction (vertical direction), and theta direction (rotation direction centered on the Z axis). The rotation is in a free state, and various processing devices, peripheral exposure devices 157, and exposure processing devices 105 belonging to the fourth processing device group G4 can be accessed, and the wafer W can be transported to each device.
The fifth processing device group G5 is composed of, for example, the cooling device 160, the stretching devices 161 and 162 that place the wafer W after the exposure process on standby, and heat the wafer W after the exposure process in the following order. After cooling to a certain temperature, heating. Cooling treatment devices 163, 164, 165, 166 (PEB/COL in Figure 3) and other seven stages.
The aforementioned heating. The cooling processing device 163~166 has the same heating as the foregoing. The cooling processing device 153 has the same configuration. The second wafer transport body 141 has the same structure as the first wafer transport body 140, and is configured to be able to access various processing devices and exposure processing devices 105 belonging to the fifth processing device group G5, and to transport wafers W to each device. .
A spacer 170 is provided between the processing station 103 and the interface unit 104. The partition plate 170 shields the ambient gas in the processing station 103 and the ambient gas in the interface 104. On this partition plate, a first passage is provided at a position facing the extension devices 151, 152 belonging to the fourth processing device group G4. The main conveying device 113 accesses the extension devices 151, 152 and transfers the crystals from the processing station 103. The circle W is moved into the area S1 before exposure. In addition, the first passage port 171 is provided with a first switch 172 that can freely open and close the first passage port 171. The first switch 172 is opened only when the wafer W passes through the first passage port. 1 switch 172 is closed.
A second passage 173 is provided at a position opposite to the extension devices 161 and 162 belonging to the fifth processing device group G5 of the spacer plate 170, and the main conveying device 113 accesses the extension devices 161 and 162 from the exposure after exposure. The area S2 carries the wafer W out to the processing station 103. In addition, the second pass port 173 is provided with a second switch 174 for making the second pass port 173 a free switch, and the second switch 174 is opened only when the wafer W passes through the second pass port 173. In addition, The second switch 174 is closed at the same time.
In addition, an exposure processing apparatus 105 that performs exposure processing of the wafer W is provided adjacent to the interface portion 104. The exposure processing device 105 is sealed by the lock chamber 105a of the exposure processing device 105, so as to form a structure that can strictly control the ambient gas in the exposure processing device 105. In addition, on the pre-exposure area S1 side of the interface portion 104 of the gate chamber 105a, a passage port 175 for carrying the wafer W from the interface portion 104 into the exposure processing apparatus 105 is provided. The passage port 175 is provided so that the passage port 175 can be freely provided. Switch 176 on and off. In addition, on the side of the post-exposure area S2 of the interface portion 104 of the gate chamber 105a, a passage port 177 for carrying the wafer W from the exposure processing apparatus 105 into the interface portion 104 is provided. The passage port 177 is provided with the passage port 177 freely opened and closed.Switch178.
The upper part of the pre-exposure area S1 of the interface part 104 is provided with a first gas supply device 180 for supplying inert gas, and the upper part of the post-exposure area S2 is provided with a second gas supply device, and the first gas supply device 180 is used to expose the The pre-exposure area S1 is supplied with an inert gas from the second gas supply device 181 to the pre-exposure area S2.
These gas supply devices 180 and 181 are respectively provided with ULPA filters 180a which have the function of adjusting the inert gas supplied from the supply source not shown in the figure to a certain temperature and humidity, and can remove particles in the non-reactive gas. 181a, so that the pre-exposure area S1 and the post-exposure area S2 of the interface portion 104 can be supplied with inert gas whose temperature and humidity are adjusted to make each area clean. In particular, the second gas supply device 181 is set to supply an inert gas whose temperature is lower than that of the inert gas supplied by the gas supply device 180 before exposure, so that there is a temperature difference between the ambient gas in the pre-exposure area S1 and the post-exposure area S2.
A first exhaust pipe 182 and a second exhaust pipe 183 are respectively provided at the lower portion of the pre-exposure area S1 and the lower portion of the post-exposure area S2, so as to form a configuration capable of exhausting the ambient gas in each area. Therefore, the inert gas supplied from the aforementioned gas supply devices 180, 181 to the aforementioned regions passes through the respective regions and is exhausted from the respective exhaust pipes 182, 183 to remove impurities such as oxygen, basic substances, etc. in the respective regions. Ozone, water vapor, etc. maintain a clean atmosphere in each area. Furthermore, the pressure in the pre-exposure area S1 is adjusted by adjusting the supply amount of the inert gas by the first gas supply device 180, and the pressure in the post-exposure area S2 is adjusted by adjusting the supply amount of the inert gas by the second gas supply device 1801. The confusion is controlled by a certain amount of pressure.
Next, we will describe the development of the coating development processing system 101 based on the above configuration. Go through the process of light etching engineering.
First, before starting to process the wafer W, the first gas supply device 180 adjusts the pre-exposure area S1 of the interface 104 to a certain temperature and humidity, such as 23° C., 45%, and supplies the non-particles from which the particles have been removed. Reactive gas. In addition, the second gas supply device 181 adjusts the temperature and humidity in the post-exposure area S2 of the interface portion 104 to a certain temperature and humidity, for example, 15° C., 50%', and supplies inert gas from which particles have been removed. As for the ambient gas in each area is replaced with a clean ambient gas that does not contain impurities such as particles, oxygen, and basic substances, and the post-exposure area S2 is lower than the pre-exposure area S1, and then it is maintained. state. At this time, the pressure P1 in the pre-exposure area S1, the pressure P2 in the post-exposure area S2, and the pressure P3 in the exposure processing device 5 are set to the relationship of P3>P1=P2 to prevent the ambient gas in the interface 104 from flowing into the exposureProcessing device105Inside. Processing device 105. In addition, the pressure P0 in the clean room where the coating and development processing system 101 is configured is set to be higher than the pressure P1 in the pre-exposure area S1, the pressure P2 in the post-exposure area S2, the pressure P3 in the exposure processing device 105, and the gate station 102 The pressure inside the processing station 103 is lower to prevent impurities from being contained. The ambient air in the clean room such as fine particles flows directly into the coating and developing processing system 101.
As for the start of the wafer W processing, first at the chucking station 102, the wafer carrier 7 takes out an unprocessed wafer W from the chucking gate C and carries it into the attaching device 131 of the processing station 3.
Next, in the attaching device 131, the wafer W coated with an adhesion enhancer such as HMDS to improve the adhesion with the photoresist liquid is transported to the cooling device 130 by the main transport device 113 and cooled to a certain temperature. Thereafter, the wafer W is transported to the photoresist coating device 117 or 118 and subjected to a photoresist coating process. The wafer W on which the photoresist film is formed is transferred to the extension device 151 or 152 by the main transfer device 113. At this time, the first switch is temporarily opened, and once the wafer W is carried into the stretching device 151 or 152, the first switch is closed again.
In the pre-exposure area S1 maintained in a clean atmosphere, the wafer W is transported from the extension device 151 or 152 to the heating by the first transport body. Cooling processing devices 153, 154, 155, and 156 (prebake/col in Figure 9), and heating. The cooling treatment devices 153, 154, 155 and 156 are heated. Cooling treatment. At this time, the heating process and the cooling process are not performed sequentially in each device that is individually installed, but it is like heating. The cooling processing device 153 and other devices are heated in a single device. In the cooling process, the time from the heating process to the cooling process of the wafer W can always be kept constant, so the heat to the wafer W by heating can be made the same between the wafers W.
Thereafter, the wafer W is heated from the first wafer transport body 140. The cooling processing devices 153, 154, 155, and 156 are transported to the peripheral exposure device 157. After the periphery of the wafer W is exposed by the peripheral exposure device 157, the wafer W is transported to the exposure processing device 105 through the passage port 175. At this time, the switch 176 is opened, and once the wafer W is transported to the exposure processing apparatus 105, the switch 176 is closed again.
Next, the exposure processing device 105 exposes the photoresist film on the wafer W to a certain pattern. The photoresist film uses a chemically amplified photoresist, and this chemically amplified photoresist contains impurities dissolved in the raw material polymer of the alkaline developer used in the subsequent development process, and an acid generator. As shown in FIG. 14, the exposed portion of the photoresist film 100 generates acid (+) and a catalytic reaction occurs. The exposed wafer W is transported out of the exposure processing apparatus 105 through the passage 77 through the second transport body 141. At this time, the switch 178 is opened, and when the wafer W is carried out from the exposure processing apparatus 105, the switch 178 is closed again.
In the region S2 after exposure in a clean atmosphere maintained at a low temperature, the wafer W is transported to be heated. Cooling treatment device 163, 164, 165 or 166 (PEB/COL in Figure 9) and heating after exposure treatment in sequence. Cooling treatment. After the exposure treatment, the heated PEB diffuses the acid thermally and promotes the catalyst reaction in the exposed part to release the protective group that protects the hydroxyl group of the raw polymer. Therefore, the exposed part is in a state that can be dissolved in the alkaline developing solution. The unexposed part is in a state insoluble in the alkaline developing solution. Here, for example, a typical reaction mode of a chemically amplified photoresist in the case where the raw material polymer is polyvinylphenol is represented by the following molecular formula.
<chemistry general="n"><img file="TW511169B_D0001.tif" /></chemistry>
Thereafter, the wafer W is heated from the second wafer transport body 141. The cooling processing devices 163, 164, 165, and 166 are transported to the extension device 161 or 162. Thereafter, the wafer W is carried out from the extension device 161 or 162 by the main transfer device 113. At this time, when the second switch is opened and once the wafer W is carried out from the exposure processing apparatus 105, the second switch 174 is again performed.
Thereafter, the wafer W is transported to the development processing device 119 or 120 and undergoes development processing. As shown in FIG. 15, the exposed portion is removed to form a certain circuit pattern. The developed wafer W is transported to the post-baking device 135 or 136 to be heated, and then transported to the cooling device 133 or 134 to be cooled to a certain temperature. After that, it is transported to the extension device 132 of the third processing device group, and from then on, it returns to the card gate C of the card gate station 102 via the wafer transport body 107. Through the above project, a series of light etching projects are ended.
According to the above embodiment, the inert gas is supplied to the pre-exposure area S1 by the first gas supply device 180, and the ambient gas in the pre-exposure area S1 is discharged from the pre-exposure area S1 by the first exhaust member 182 Remove impurities such as oxygen or water vapor to maintain a clean state. Therefore, the transfer from the heat treatment (PREBAKE) before the exposure treatment to the time between the exposure treatments enables the wafer W to be transported in a clean atmosphere, and the adhesion of impurities can be prevented.
Especially after the wafer W on which the photoresist film is formed is heated, the impurity is easily attached to the wafer W. During the exposure process, once the impurity is attached to the wafer W, the impurity will be absorbed in the exposure process. The laser and other energy used at the time may not be able to properly perform the exposure process. However, the pre-exposure area S1 passing through the interface 104 before the exposure process is maintained in a clean state, and the wafer can be properly processed. The exposure process of W greatly contributes to the production rate of wafer W. In addition, the shorter the wavelength of the laser light used in the exposure processing device 105, the greater the influence of impurities. Therefore, the use of a short wavelength, for example, the use of 157 nm laser light, has a greater effect.
In addition, the second gas supply device 181 supplies inert gas to the post-exposure area S1, and the second exhaust pipe 183 discharges the ambient gas in the post-exposure area S2. In this way, the same as the pre-exposure area S1 can be achieved. The ambient gas in the area S2 after exposure is maintained in a clean state.
Especially when using a chemically amplified photoresist to form a circuit pattern on the wafer W by the catalytic reaction of acid, once the impurity (such as base nature) adheres to the wafer W after the exposure process, the acid will lose its activity. However, in this way, the post-exposure area S2 of the interface portion 104 that passes through after the exposure process is maintained in a clean state, which can prevent the acid from deactivating and can appropriately perform the subsequent development process.
In addition, an inert gas is supplied to each area by a separate gas supply device, and the pre-exposure area S1 and the post-exposure area S2 are blocked by the spacer 142, thereby preventing mutual interference of ambient gases and maintaining the pre-exposure The area S1 and the post-exposure area S2 are in a unique environment gas. In this way, the ambient gas of the wafer passing path before exposure and the wafer passing path after exposure of the interface can be individually controlled.
In particular, the second gas supply device 181 supplies inert gas whose temperature is lower than the normal temperature, so that the low temperature state in the post-exposure region S2 can be maintained. In the aforementioned chemically amplified photoresist, when the protective group used to protect the hydroxyl group of the raw polymer has the property of detachment reaction at room temperature, if the ambient gas temperature of the area S2 after exposure is above room temperature, the protecting group The detachment reaction will proceed in the post-exposure area S2 and on the wafer W being transported. However, maintaining the post-exposure area S2 at a low temperature can suppress the desorption reaction of the protective group during transport. For example, the heat treatment (PEB) performed after exposure can accelerate the acid catalyst reaction in one go and appropriately carry out the protective group detachment reaction to complete the exposed part. The polarity of the unexposed part changes. Therefore, the circuit pattern can be formed well and the subsequent development process can be appropriately performed.
Both the first gas supply device 180 and the second gas supply device 181 have a temperature adjustment function, so the pre-exposure area S1 and the post-exposure area S2 can be individually maintained at a constant temperature.
Setting the pressure P1 in the pre-exposure area S1 and the pressure P2 in the post-exposure area S2 to be lower than the pressure P3 in the exposure processing device 105 can prevent the ambient gas in the pre-exposure area S1 and the post-exposure area S2 from flowing into it Inside the exposure processing apparatus 105 where the ambient gas is strictly controlled.
Furthermore, an example of the implementation mode of the present invention has been described above, but the present invention is not limited to this example, and various modes can be adopted. Install gas supply devices on the upper part of the card gate station 102 and the upper part of the processing station 103, respectively. The lower part of these devices are respectively equipped with exhaust pipes, so that the inside of the card gate station 102 and the processing station 103 can also be kept clean. In this way, the entire coating and development processing system 101 can be maintained in a clean state, and a series of light etching processes can be appropriately performed.
In addition, in order to save the consumption of inert gas, for example, part or all of the inert gas discharged from each area can be recovered, and then purified and sent to each gas supply device 180, 181 as the inert gas for recycling. use.
In addition, the implementation mode described above is related to the wafer W coating development processing system in the light etching process of the semiconductor device manufacturing process. However, the present invention can also be applied to the coating display of substrates other than semiconductor wafers, such as LCD substrates. Like processing system.
As described above, according to the present invention, inert gas is supplied to the coating and development processing system to prevent molecular-level impurities such as oxygen, salt-based substances, ozone, and organic substances from adhering to the substrate, so that it is not affected by impurities. Properly process the substrate to achieve the purpose of increasing the production rate. In addition, it is possible to individually control the ambient gas of the substrate passing path before exposure and the substrate passing path after exposure in the interface portion.
Especially in the case of using a chemically amplified photoresist, it is possible to prevent the acid generated during exposure from reacting with the basic substance in the air and losing its activity. In addition, since the area after exposure can be maintained at a low temperature, it is possible to suppress the removal reaction of the protective group during transportation. Therefore, the subsequent development processing can be performed appropriately.
In addition, according to the present invention, the pre-exposure area and the post-exposure area can be maintained at a clean and unique ambient gas for each area, and each area can be maintained at a certain temperature. In addition, it is possible to prevent the ambient gas in the pre-exposure area and the post-exposure area from flowing into the exposure processing device whose ambient gas is strictly controlled.
(The third implementation mode)
Next, the third embodiment of the present invention will be explained.
Fig. 16 is a plan view of the substrate processing apparatus of the third embodiment.
The apparatus 200 shown in Fig. 16 has an interface section 202 in the interface section 4 of the system shown in Fig. 1, for example, and the interface section 202 is provided to temporarily keep receiving it from the processing station 3 and transporting it to the exposure process. The device 5 is the processing chamber 201 of the wafer W.
The ambient gas in the processing chamber 201 is controlled by the ambient gas controller 203.
For example, the ambient gas controller 203 reduces the pressure in the processing chamber 201. In addition, the ambient gas controller 203 may be configured to supply inert gas into the processing chamber 201 or to supply dry air into the processing chamber 201.
In addition, the processing chamber 201 has a clean chamber 204 that temporarily holds and cleans the wafer W introduced into the processing chamber, a buffer chamber 205 that holds the wafer W, and is arranged between the clean chamber 204 and the buffer chamber 205 to remove the wafer W from the clean chamber 204. The transfer device 206 that transfers the substrate to the buffer chamber 205. The clean room 204 and the buffer room 205 are in a state where wafers W are accommodated in multiple stages.
The cleaning chamber 204 is provided with a passage port 207 for transferring the wafer W from the wafer transport body 55 to the cleaning chamber 204 and a passage port 208 for transferring the wafer W from the cleaning chamber 204 to the transfer device 206. The passage ports 207 and 208 are respectively provided with switches 209 and 210 for opening and closing the passage ports 207 and 208.
The buffer chamber 205 is provided with a through port 211 for directly carrying out the wafer W from, for example, an in-stage (not shown) of the exposure processing apparatus 5. The passage 211 is also provided with a switch 212 for opening and closing the passage 211.
Once the wafer W is carried into the clean room 204 from the wafer carrier 55, first, the clean room 204 is cleaned under reduced pressure. The provision of such a clean room 204 can prevent contamination of the transport device 206 and the buffer room 205 with ambient air. Secondly, the wafer W is transferred from the clean room 204 to the buffer room by the transport device 206, and the wafer W in the buffer room 205 is removed from the buffer room. The chamber 205 is carried into the exposure processing apparatus 5.
In this way, according to the present embodiment, the structure temporarily holds the wafer W delivered from the processing station 3 and transferred to the exposure processing apparatus 5 in the processing chamber 201 in which the ambient gas is controlled, so that, for example, the light before exposure can be suppressed. The time-dependent change of the resistance can prevent the change of the characteristics of the photoresist. As a result, the uniformity of the line width can be improved.
(Implementation Style 4)
Next, the fourth embodiment of the present invention applied to a substrate coating and developing device will be explained.
First, the conventional example will be explained based on Fig. 28. As shown in FIG. 28, the card gate C that accommodates a substrate such as a semiconductor device is carried into the card gate 301 of the card gate station A1. The card gate station A1 is connected to the processing station A2, and the processing station A2 is connected to the exposure device not shown in the figure through the interface station A3.
The wafer W in the chucking gate C on the chucking gate 301 is taken out by the arm 311 and sent to the coating unit 313 by passing through the rack unit 312, where the photoresist is coated. After that, the wafer W is transported and exposed by the passing path of the wafer W transport member 314 the transfer part of the shelf unit 315 the interface station A3 the exposure device. The exposed wafer W is transported to the processing station A2 through the reverse path. After the developing unit not shown in the figure is developed at the lower part of the coating unit 313, it passes through the wafer transporting member 314 the shelf unit 312 The transfer part the card gate C is transported through the path.
In addition, each shelf of the shelf units 312 and 315 is configured as a heating part, a cooling part, a transfer part of the wafer W, a hydrophobic treatment part, etc., because the above-mentioned photoresist is applied at a certain temperature before the coating or development process. For coating of photoresist, etc., heating treatment and cooling treatment are sequentially performed in the aforementioned shelf units 312 and 315. In addition, 316 is a transfer arm that transfers the wafer W between the processing station and the exposure apparatus.
In addition, the aforementioned processing station A2 is divided into a processing area composed of a coating unit 313 and a developing unit, and a transport area where the wafer transport member 314 is arranged. Humidity of the air forms a so-called high-precision adjustment environment gas.
The chemically amplified photoresist generates acid by exposure. This acid is diffused by heat treatment and used as a catalyst. It decomposes the raw material resin of the main component of the photoresist and changes the molecular structure to form a solvent that is soluble in the developer. . In the case of using this kind of photoresist, the exposed wafer W is heated to a certain temperature in the heating part of the shelf unit 315, for example, to suppress the solubilization reaction of the developer due to acid (the solution of photoresist) Like reaction), the cooling part of the same shelf unit 315 is cooled to a certain temperature, and then the developing liquid is applied to the developing unit.
However, since the chemically amplified photoresist system allows the resolution reaction of the aforementioned photoresist to proceed at a temperature around room temperature, when the wafer W between the exposure device and the heating section is transported, the temperature of the transport area is Or the change of the conveying time has a great influence on the developing line width, and there is a problem that the developing line width changes with these changes, especially the acetal-based chemically amplified photoresist is more prominent.
Therefore, manage the transfer time of the exposure deviceheating department and ensure the uniformity of the visual line width by arranging the progress of the photoresist resolution reaction between the transfers. However, this will also affect the visual line width. Uneven situation arises in this regard.
The fourth implementation mode is to deal with these problems.
Figure 17 is a schematic plan view of this embodiment, Figure 18 is a perspective view showing the inside. In the figure, S1 is a card gate station, and S2 is a photoresist coating process or a development process on the wafer W. Station, S3 series interface station, S4 series exposure device.
The chucking station S1 has a chucking station 321 and a transfer arm 323. The chucking station 321 forms a placing portion, and the placing portion is used to place four substrates such as 25 wafers W, for example. The wafer chucking gate (hereinafter referred to as "the chucking gate") 322 formed by the substrate chucking gate, and the transfer arm is formed with a transfer member, and the transfer member is used for the chucking gate 322 and the processing station on the chucking gate 321 The wafer W is transferred between S2. The transfer arm 323 is configured to be able to rise and fall freely, move freely in the X and Y directions, and freely rotate around the vertical axis.
In addition, the processing station S2 has, for example, two developing units D (D1, D2), two coating units C (C1, C2), for example, three rack units R (R1, R2, R3), and, for example, one substrate transport member MA, while the wafer W is handed over between the card gate station S1 and the interface station S3, the wafer W is coated with photoresist liquid, and the wafer W is developed and processed in the station S2. The wafer W is heated and cooled to a certain temperature before and after.
In addition, an example of the arrangement of the processing station S2 is described. The transfer arm 323 is provided with a processing unit on the back side of the transfer arm 323, for example, when viewed from the card gate station S1 toward the inside, for example, on the right side a processing unit equipped with a developing unit D, a coating unit C, etc. It spans in two sections. That is to say, two development units D1 and D2 of the development processing part are formed, and the development unit D1 is arranged in the front and two are juxtaposed in a direction approximately perpendicular to the arrangement direction of the gate of the gate 321. In the lower section of these developing units D1 and D2, two coating units C1 and C2 are arranged at the front and arranged in two side by side. In the following description, the card gate S1 side is referred to as the front side and the exposure device S4 is referred to as the back side.
Also, from the point of view of the card gate S1 of the processing unit U, there is provided on the left side for the transfer of the wafer W between the coating unit C, the developing unit D, and the shelf unit R, so that it can be moved up and down freely, left and right, A substrate transfer device MA that moves freely back and forth and freely rotates around a vertical axis. Viewed from the card gate station S1 side of the substrate transfer device MA, the scaffold unit R1 is arranged on the front side, the scaffold unit R2 is arranged on the back side, and the scaffold unit R3 is arranged on the left side. However, for convenience, the shelf unit R3 and the substrate conveying member MA are omitted in FIG. 18.
The aforementioned rack units R1 and R3 represent the rack unit R1 as shown in FIG. 19. A heating part 331 for heating the wafer w, a cooling part 332 for cooling the wafer W are arranged in tandem, and the surface of the wafer w The hydrophobized portion 333, the scaffold unit R1 has the transfer section 334 of the transfer station for transferring the wafer W between the transfer arm 323 of the card gate station S1 and the substrate transfer member MA, and the scaffold unit R1 Alignment part 335 used to position the wafer W together.
The heating unit 331 can heat the wafer W to a certain temperature by placing the wafer W on the surface of a heating plate with a built-in heater, and the cooling plate 332 can heat the wafer W to a certain temperature by, for example, a cooling plate with a built-in thermocouple module. The wafer w is placed on the surface and the wafer W can be cooled to a certain temperature.
In addition, the aforementioned rack unit R2, as shown in FIG. 20, is vertically arranged with a CHP (Chiling Hot Plate Station) device for heating the wafer W, and then cooling the wafer W, and has an interface station S3 which will be described later. The transfer part 340 of the transfer table for transferring the wafer w between the transfer arm A and the substrate transfer member MA.
The aforementioned CHP device has a heating plate 341 for forming a heating part for heating the wafer W, and a cooling plate 342 for cooling the wafer W as shown in FIG. 21A to FIG. 21D. First, the wafer W is mounted After placing it on the heating plate 341 and heating to a certain temperature (refer to FIG. 21A), for example, the wafer W is taped from the heating plate 341 by the protruding pins 343, and the cooling plate 342 is moved to the wafer W by the conveying member. The wafer W is transferred to the cooling plate 342 at the lower position (refer to FIG. 21B and FIG. 21C), and then the cooling plate 342 in the state where the wafer W is placed is moved to the side of the heating plate 341 for cooling The wafer W reaches a certain temperature (Fig. 21D). This device controls the heating time by transferring the wafer W between the heating plate 341 and the cooling plate 342, so that overheating can be prevented.
In addition, in Fig. 22, it is obvious that the unit D, 351 is a cup body, and a freely rotating rotating clamp 352 with a vacuum suction function is arranged in the cup body 351. The rotating clamp 352 is configured to be lifted and lowered freely by the lifting mechanism 353, and when it is located on the upper side of the cup body 351, the wafer W is transferred to and from the arm 361 of the substrate conveying member MA which will be described later.
The wafer W is transferred by rotating the upper side of the cup body 351 to lift the wafer W on the arm 361 from its lower side to receive it, and in the opposite operation, the wafer W is transferred from the rotating clamp 352 side to the arm. 361.354 is the discharge nozzle of the treatment liquid, 355 is the treatment liquid supply pipe, and 356 is the support arm used to move the nozzle horizontally.
The aforementioned discharge nozzle 354 has, for example, a large number of supply holes arranged in the diameter direction of the wafer W. The discharge nozzle 354 discharges the developing solution to the surface of the wafer W on the rotating clamp 352, and the rotating clamp 352 is rotated halfway to place the wafer on the wafer W. The W top is filled with a developing solution to form a liquid film of the developing solution.
In addition, although the coating unit C has approximately the same structure as the developing unit D, the ejection nozzle 354 of the coating unit C is configured to supply the processing liquid to the vicinity of the center of the wafer W, and the photoresistance of the processing liquid is blocked from the ejection nozzle 354. The liquid drops onto the surface of the wafer W on the rotating clamp 352 to form a rotatable rotating clamp 352 and stretch the photoresist liquid on the wafer W to form a coating.
Moreover, these processing units U are enclosed spaces. That is, for example, as shown in Fig. 22, while the developing unit D and the like are divided from other spaces by the wall 357, the various parts between the developing unit D1 and the coating unit C1 are also divided by the partition wall 358, Each part of the aforementioned wall part of the developing unit D1 and the like forms an interface 350 corresponding to the position of the arm 361 of the substrate conveying member MA.
In addition, for each part divided by the wall part 358 and the partition wall 358, the impurity is removed, and the temperature is adjusted to a certain temperature, such as the coating temperature of the developer solution 23°C, and air at a certain temperature, whereby these areas are formed Ambient gas adjusted with high precision.
That is, as shown in Figure 22, for example, the divided processing unit U is provided with a filter unit F1 covering the upper side, and the ambient gas recovered from the lower part of the processing unit U is discharged to the factory exhaust system. On the other hand, a part of it is introduced into the filter device 359, and here the air purified by the filter 359 passes through the filter unit F1 and blows down and out into each part.
The aforementioned filter unit F1 has a chemical filter and a suction fan to remove alkali components such as ammonia or amines in the air and add acid components when using a filter for purifying the air or a chemically amplified photoresist. Wait. In addition, the aforementioned filter device 359 has an impurity removal part for removing impurities, a heating mechanism, a humidification mechanism, a sending part for sending out air, and the like.
For example, in the case of using a chemically amplified photoresist as a photoresist liquid, once a small amount of ammonia contained in the air and alkali components such as amines produced by wall paint come into contact with the acid on the surface of the photoresist, it can be suppressed as described later. The catalytic reaction caused by the acid deteriorates the shape of the pattern, so it is necessary to remove the alkali component. Therefore, since it is necessary to prevent the alkali component from entering the development process atmosphere, the processing unit should be set in a closed space and a chemical filter should be used to prevent the intrusion of the alkali component from the outside.
The aforementioned substrate conveying member MA, for example, as shown in FIG. 23, has a pair of three arms 361 for holding the wafer W, a base 362 that supports the arm 361 to advance and retreat freely, and a pair of supports that support the base 362 to move up and down freely. The guide rails 363 and 364 are configured to be able to advance and retreat freely, rise and fall freely, and rotate freely around the vertical axis by rotating these guide rails 363 and 364 by the rotary drive unit.
The processing station S2 is adjacently connected to the inner surface station S3 of the interface portion, and the inner side of the interface station S3 is connected to the exposure device S4 for exposing the wafer W on which the photoresist film is formed. The inner surface station S3 of the interface portion has a rack unit R4 with a multi-stage arrangement of the reaction suppression portion 307 for suppressing the resolution reaction of the photoresist to the wafer W, and the processing station S2 and the exposure device S4 and the rack unit R4 are crystallized between the processing station S2 and the exposure device S4 and the rack unit R4. The transfer arm A transferred by the circle W constitutes a state where the wafer W is transferred between the processing station S2 and the exposure apparatus S4, and the exposed wafer W is subjected to the aforementioned reaction suppression treatment in the station S3.
To illustrate an example of the configuration of such an interface station S3, for example, when viewed from the gate side S1 of the card gate station, the scaffold unit R4 is set on the right side, and the scaffold unit R4 is set on the left side for the processing station S2 and exposure The wafer W is transferred between the device S4 and the rack unit R4, for example, a transfer arm A that can move up and down, move left and right, and move forward and backward, and rotate around a vertical axis.
The aforementioned reaction suppressing portion 307 is used to cool the wafer W to a level where dew does not condense to suppress the photoresist from proceeding with the resolution reaction. For example, as shown in FIG. 24, for example, a cooling plate 371 with a thermocouple module 370 embedded therein. Place the wafer W on the surface of the wafer W so that the wafer W reaches a certain temperature without undergoing a resolution reaction, and is cooled to a level that does not condense, for example, about 10 to 15°C. The cooling plate 371 is accommodated in, for example, the gate chamber 372 of the transfer port 375 of the wafer W corresponding to the position of the arm of the transfer arm A. The cooling plate 371 is provided for transferring the wafer W to the plate 371. Lifting pin 373 that is lifted and lowered by the lifting mechanism 374.
The thermocouple module 370 of the aforementioned cooling plate 371 is a semiconductor element that can move heat from the heat-absorbing side to the heat-emitting side by direct current. Since the amount of current flowing can change the amount of current, it can suppress the heat generation, so it is in the reaction suppression The section 307 adjusts the temperature of the wafer W with high accuracy. In this embodiment, the set temperature of the cooling plate 371 is detected by the temperature and humidity meter 370 to detect the temperature and humidity in the interface station S3, and the dew point is calculated based on the temperature and humidity, and the control unit 370 controls the temperature and humidity. The temperature below this dew point.
The transfer arm A is an arm 376 for holding the wafer W. The arm 375 is configured to move freely in the arranging direction (Y direction) of the chucking gate of the chucking station S1, and the remaining structure is the same as the aforementioned substrate transportation member. For example, the conveying arm A-based rotation driving unit 365 can move along the guide rail 377 provided in the Y direction, thereby constituting the arm 376 to move freely in the X and Y directions, freely rise and fall, and freely rotate around the vertical axis.
Moreover, this interface station S3 is a confined space. That is, for example, as shown in FIG. 25, the wall portion 378 is divided from other spaces, and the position of the arm 376 of the conveying arm A corresponding to the aforementioned wall portion 378 forms an interface 379.
The aforementioned interface station S3 has a chemical filter and a suction fan to remove alkali components in the air, such as ammonia or amines, and add acid components when using filters or chemically amplified photoresists to purify air. The filter unit F2 of other equipment, the filter unit is installed to cover the upper side, and the cleaned air passes through the filter unit F2 to form a structure that blows down and blows out.
Next, the effect of the aforementioned implementation mode will be explained. First, the card gate 322 containing 25 wafers W is transferred to the card gate station 321 by the automatic transfer robot (or operator), and the wafer W is taken out from the card gate 322 by the transfer arm 323 and placed for processing The transfer part of the scaffold unit R1 of station S2.
This wafer W is routed through the path of the substrate conveying member MAthe hydrophobic part 333 of the rack units R1, R3the substrate conveying member MA, and the cooling section 332 of the rack units R1, R3the substrate conveying member MAthe coating unit C For transportation, after the wafer W is hydrophobized, it is cooled to a certain temperature for temperature adjustment, and the coating unit C is coated with a photoresist liquid at a certain temperature, for example, °C.
The wafer W coated with the photoresist liquid is transported and the temperature is adjusted through the path of the substrate conveying member MA the heating part 331 of the rack units R1 and R3 the substrate conveying member MA the cooling part 332 of the rack units R1 and R3 Then, the substrate conveying member MAthe transfer part 340 of the shelf unit R2the conveying arm A of the interface station S3the exposure device S4 is conveyed and exposed.
The exposed wafer W is transported through the path of the exposure device 4the transport arm of the interface station S3the reaction suppression section 307 of the shelf unit R4. The reaction suppression section 307 lifts the wafer W on the surface of the cooling plate 371 The pin 373 and the transfer arm A cooperate to transfer, and by placing the wafer W on the cooling plate 371 set at a certain temperature for a certain period of time, the wafer W is prevented from undergoing photoresist resolution processing, and perform Cool to a temperature that does not cause condensation, such as 10 to 15°C.
Explain the chemically amplified photoresist. This light, as shown in Figures 26A to 26C, contains the main component of the raw resin 381, the protective group 382 used to inhibit the dissolution of the raw resin 381 in the developing solution, and the generation of photoacid. Agent 383, and has the property of sensitizing the entire exposed area with less exposure energy.
This kind of photoresist is shown in Fig. 26, the acid 384 is generated from the photoacid generator 38 by exposure, and then, as shown in Fig. 26b, it is heated and uses heat energy to obtain the acid 384 from the resin 381. The protecting group 382 is cut off, so this reaction occurs in a chain reaction. Then, the chain reaction is stopped by a cooling treatment, and thereafter, as shown in Fig. 26C, the area soluble in the alkali solution is removed by the aforementioned chain reaction by a development treatment to form a certain pattern. In Figs. 26A to 26C, the 385 series substrate, the 386 series photoresist, and the 387 series form a mask with a certain pattern.
Such a photoresist uses the acid 384 generated by exposure to act as a catalyst, so even if it proceeds slowly, the photoresist's resolution reaction (reaction of initial breaking of the protective group 382 from the raw resin) will proceed immediately after the exposure. However, the progress rate of this resolution reaction depends on the temperature, and it is lower than room temperature and at a temperature that does not cause condensation, for example, at a temperature of about 10 to 15°C. Like a state of reaction. Therefore, by cooling the exposed wafer W to a temperature of about 10 to 15° C. in the reaction suppression section, the resolution reaction of the photoresist can be suppressed. In addition, the reason why the reaction suppression unit 307 is made so that the cooling temperature of the wafer W does not reach the level of condensation is that when dew is attached to the surface of the wafer W, it faces the acid 384 (acid near the surface) on the surface of the photoresist interface. 384) It is absorbed into the photoresist liquid, and because of the uneven resolution progress and the line width of the image, it is necessary to prevent this.
In this way, the wafer W cooled to a certain temperature is transferred by the transfer arm A of the interface station S3 the transfer section 40 of the scaffold unit R2 of the processing station S2 the substrate conveying member MA the CHP device 4 of the scaffold unit R2 The substrate conveying member MA The developing unit D is conveyed through the path. After the heating plate 341 of the CHP device 304 is heated to a certain temperature, it is cooled to a certain temperature by the cooling plate 342 and the temperature is adjusted, and then the developing unit D The wafer W is subjected to a certain temperature, for example, the application temperature of the developing solution is 23° C., and the development process is performed.
Here, in this embodiment, the heating plate 341 of the CHP device 304 uses the aforementioned acid 384 to cut the protective group 382 from the resin 381, and heat treatment is performed to dissolve the alkaline solution, and the cooling plate 342 stops the aforementioned chain reaction. The cooling treatment.
After that, the wafer W is transferred by the substrate conveying member the heating section 331 of the rack units R1 and R3 the substrate conveying member MA the cooling section 332 of the rack units R1 and R3 the substrate conveying member MA the transfer section of the rack unit R 334 The transfer part 323 is transported via a path, and once heated to a certain temperature and then cooled to a certain temperature, the wafer W is returned to the original card gate 322 by the transfer part 334, for example.
Here, the wafer W in the processing station S2 is sequentially transferred to the transfer part 334 of the rack unit R1, and then from the empty hydrophobizing part 333 the empty cooling part 332 of the rack units R1 and R3 empty coating Coating unit C heating part 331 of the scaffold unit R1, R3 right heating part 331 of the vacant scaffold unit R1 and R3 cooling part 332 of the vacant scaffold unit R1 and R3 passing path of the interface station S3, and , The exposed wafer W can be used in the empty reaction suppression unit 307 of the scaffold unit R4 of the interface station S3 the empty CHP device 304 of the scaffold unit R2 of the processing station S2 the empty display unit D the scaffold unit The heating part 331 of R1, R3 the cooling part 332 of the vacant shelf unit R1 and R3 the transfer part 334 of the shelf unit R1 is conveyed.
In the above-mentioned embodiment, after the exposure, the wafer is cooled to a temperature at which condensation does not occur in the reaction suppression section 7, so that the uniformity of the developing line width can be improved. That is, the wafer W exposed by the exposure device S4 is cooled to a certain temperature in the reaction suppression section 307, but the transport time from the exposure device S4 the reaction suppression section 307 is constant, so the photoresist resolution during the transport period The reaction proceeded to about the same extent.
In addition, since the wafer is cooled to a temperature at which condensation does not occur in the reaction suppression section 307 and the wafer is cooled to a level that can suppress the resolution reaction of the photoresist, the wafer W here can be referred to as the aforementioned The progress of the resolution reaction is approximately inhibited. Therefore, the heating plate 341 of the device 304 always heats the wafer W in the same state, so the heating plate 341 also has the aforementioned degree of resolution reaction, which can suppress the unevenness of the developing line width and improve the display. The uniformity of the image line width.
In the above-mentioned present embodiment, the reaction suppression unit 307 may be configured to cool the wafer by circulating a refrigerant to the cooling plate 371, or the reaction suppression unit 307 may be configured as shown in FIG. 27. In this embodiment, a shelf 391 for placing wafers W in multiple stages is installed in a closed processing chamber 390 partitioned from the periphery, and gas at a certain temperature is supplied to the processing chamber 390, thereby suppressing the progress of wafer W. The resolution response of the photoresist is adjusted to a temperature that does not condense.
392 in FIG. 27 is a gas storage tank for supplying gas into the processing chamber 390, and 393 is the gas from the tank 392 after being adjusted to a certain temperature, and then sent to the adjusting part 393 of the processing chamber 390. In this embodiment, the gas temperature adjusted by the adjusting portion 393 can be controlled by the control portion 395 based on the temperature in the processing chamber 390 detected by the temperature detecting portion 394. In addition, for the gas supplied in the processing chamber 390, inert gases such as air and nitrogen, and mixed gases such as air and inert gases can be used.
In addition, as described above, the temperature control of the wafer W is performed in the reaction suppression unit 307, but it is also possible to suppress the progress of the photoresist resolution reaction by managing the amount of moisture attached to the wafer W. That is, the acetal chemically amplified photoresist needs a humidity of about 45% during the resolution reaction of the photoresist. In the case of insufficient humidity, the resolution reaction is difficult to occur. Therefore, the humidity in the reaction suppression unit 307 is set to a low humidity state of, for example, 20% or less, and the amount of moisture adhering on the wafer W that is waiting in the device for a certain period of time or longer is made to adhere to the wafer when transported to the reaction suppression unit 307. If the water content of the circle W is small, the resolution reaction of the photoresist can be suppressed more.
Specifically, the reaction suppression unit 307 shown in Fig. 27 is configured to supply the card gate from a storage tank with the humidity adjusted by the adjustment unit, and control the humidity adjusted by the adjustment unit by the control unit according to the humidity in the card gate. The gas temperature is better. here. The gas supplied to the card gate can be inert gas such as air and nitrogen, or a mixed gas of air and inert gas, etc. Furthermore, the reaction suppression unit 307 shown in FIG. 27 preferably controls the gas adjusted by the adjustment unit 393 by the control unit 395 in accordance with the humidity in the processing chamber 390 exposed by the humidity detection unit.
In addition, the reaction suppression unit can also be set in a state where the temperature management of the wafer W and the management of the amount of adhered moisture are combined. In this case, the resolution reaction of the photoresist can be further suppressed, so higher development can be ensured Uniformity of line width.
In addition, the reaction suppression unit 307 is not limited to the interface station S3, but may be installed in the processing station S2. However, when the temperature and humidity of the transport area between the exposure device S4 and the reaction suppression unit 307 tend to change, It is necessary to have a short transport time and complete the resolution reaction of the photoresist during transport. Therefore, the reaction suppression unit 307 is preferably installed in the interface station S3, and preferably installed near the exposure device S4.
In addition, in the control unit, the set temperature of the cooling plate 371 of the reaction suppression unit 307 is set to an optimum value higher than a certain temperature range, for example, 1°C to 3°C, which is set via the detected temperature and humidity and the calculated dew point, for example. Alternatively, in this case, the aforementioned certain temperature will be changed by the type of photoresist, and the relative humidity can also be calculated by the temperature and humidity in the ambient gas (value calculated from the cooling temperature of the moisture content of the ambient gas) It is a cooling temperature of 85%±5%, and the temperature of the cooling plate 371 is controlled in a certain temperature range according to this temperature. Moreover, the control temperature range of the cooling plate 371 can also be preset, and this temperature range is not a certain humidity range calculated based on the dew point or relative humidity, and can be controlled to modify the control temperature range of the cooling plate 371.
In the present invention described above, instead of the hydrophobic treatment, an anti-reflection film may be formed on the surface of the wafer W before the photoresist is applied. In this case, since the wafer W is cooled to a certain temperature before the anti-reflection film formation process is performed, for example, the unit for forming the anti-reflection film is added to the processing unit U, and the anti-reflection film formation is determined according to the temperature of the transport area. When the unit transports the wafer W, the temperature of the cooling part 304 is controlled according to the temperature of the transport area to bring the wafer W to the temperature to be processed.
Furthermore, as shown in FIG. 29, the light beam 701 of the exposure device S4 scans the wafer W sequentially. Therefore, the reaction time is shifted by the wafer W area. As shown in FIG. 30, the reaction suppression unit 307 generally changes the cooling condition according to the wafer W area, and the above-mentioned time shift can be eliminated. More specifically, for example, the exposure device S4 may first be cooled in time to be lower than the temperature of the area irradiated by the light beam 701. In addition, even if the timing of the cooling time is changed according to the wafer W area, the time shift can be eliminated. More specifically, for example, the exposure device S4 may be set to cool earlier than the area irradiated by the light beam 701 in terms of time.
In addition, in forming the anti-reflection film, when a chemically amplified photoresist is used, reflection occurs on the underside of the photoresist during exposure, so it is necessary to prevent this. Moreover, the substrate referred to in the present invention is not limited to wafers, but can also be glass substrates for liquid crystal displays.
As described above, according to the present invention, the substrate can be transported from the exposure device to the heating section in a state where the resolution reaction is suppressed, so that the uniformity of the line width of the image can be improved.
(Fifth Implementation Mode)
Hereinafter, the fifth embodiment of the present invention applied to a substrate coating and developing device will be described.
Figure 31 is a schematic plan view of this embodiment, Figure 32 is a perspective view of the interior, Figure S1 is a card gate station, S2 is used for photoresist coating processing and development processing of wafer W Station, S3 is the interface station, and S4 is the exposure device.
The chucking station S1 has a chucking station 421 and a transfer arm 423. The chucking station 421 forms a placing portion, and the placing portion is used to place four substrates such as 25 wafers W, for example. The wafer chucking gate (hereinafter referred to as "the chucking gate") 422 formed by the substrate chucking gate, and the transfer arm 423 is formed with a transfer member, and the transfer member is used for the chucking gate 422 on the chucking gate 421 and processing The wafer W is transferred between the stations S2. The transfer arm 423 is configured to be able to rise and fall freely, move freely in the X and Y directions, and freely rotate around the vertical axis.
In addition, the processing station S2 has, for example, two developing units D (D1, D2), two coating units C (C1, C2), such as three rack units R (R1, R2, R3), and, for example, one substrate transport member MA, while the wafer W is handed over between the card gate station S1 and the interface station S3, the wafer W is coated with photoresist liquid, the wafer W is developed, and the processing is carried out in the station S2 The wafer W is heated and cooled to a certain temperature before and after.
In addition, an example of the arrangement of the processing station S2 is described. The transfer arm 423 is provided with a processing unit on the back side of the transfer arm 423, for example, when viewed from the card gate station S1 toward the inside, for example, on the right side a processing unit equipped with a developing unit D, a coating unit C, etc. It spans in two sections. That is to say, two development units D1 and D2 of the development processing part are formed, and the development unit D1 is arranged at the front in a direction approximately perpendicular to the arrangement direction of the gate of the gate 421, and the two are juxtaposed. In the lower section of these developing units D1 and D2, two coating units C1 and C2 are arranged at the front and arranged in two side by side. In the following description, the card gate S1 side is referred to as the front side and the exposure device S4 is referred to as the back side.
Also, judging from the card gate S1 of the processing unit U, on the left side is provided for the transfer of the wafer W between the coating unit C, the developing unit D, and the shelf unit R. For example, it can move up and down freely, left and right. , A substrate transfer device MA that freely moves back and forth and freely rotates around a vertical axis. Viewed from the card gate station S1 side of the substrate transfer device MA, the scaffold unit R1 is arranged on the front side, the scaffold unit R2 is arranged on the back side, and the scaffold unit R3 is arranged on the left side. However, the shelf unit R3 and the substrate transport member MA are omitted in FIG. 32 for convenience.
The aforementioned rack unit R (R1, R2, R3) represents the rack unit R2 as shown in Fig. 33. The heating part 431 for heating the wafer W, the cooling part 432 for cooling the wafer W, and the The rack units R1 and R3 are used to hydrophobize the surface of the wafer W and the hydrophobic part 433, and the rack unit R1 is used to transfer the wafer W between the transfer arm 423 of the chucking station S1 and the substrate transfer member MA. And the transfer part 434 of the transfer table for transferring the wafer W between the transfer arm A of the interface station S3 and the substrate transfer member MA described later in the scaffold unit R2, and the scaffold unit R1 to perform die alignment The alignment part 435 of the position of the circle W.
The heating part 431 can heat the wafer W to a certain temperature by placing the wafer W on the surface of a heating plate with a built-in heater, and the cooling plate 432 can heat the wafer W to a certain temperature by, for example, a cooling plate with a built-in thermocouple module. The wafer W is placed on the surface and the wafer W can be cooled to a certain temperature.
In Fig. 35, it is obvious that the unit D, 441 is a cup body, and a freely rotating rotating clamp 442 with a vacuum suction function is arranged in the cup body 441. The rotating clamp 442 is configured to be lifted and lowered freely by the lifting mechanism 443, and when it is located on the upper side of the cup body 441, it transfers the wafer W to and from the arm 451 of the substrate conveying member MA which will be described later.
The wafer W is transferred by the rotating clamp 442 which lifts the wafer W on the arm 451 from the lower side of the cup 441 on the upper side of the cup body 441 to receive it, and then transfers it from the rotating clamp 442 side to Arm 451.444 is a nozzle for discharging treatment liquid, 445 is a treatment liquid supply pipe, and 446 is a support arm used to move the nozzle horizontally.
The aforementioned discharge nozzle 444 has, for example, a large number of supply holes arranged in the diameter direction of the wafer W. The discharge nozzle 444 discharges the developing liquid to the surface of the wafer W on the rotating clamp 442, and the rotating clamp 442 is half-rotated on the wafer. The W top is filled with a developing solution to form a liquid film of the developing solution.
In addition, although the coating unit C has approximately the same structure as the developing unit D, the discharge nozzle 444 of the coating unit C is configured to supply the processing liquid to the vicinity of the center of the wafer W, and the photoresist of the processing liquid is blocked from the discharge nozzle 444. The liquid drops onto the surface of the wafer W on the rotating clamp 442 to form a rotatable rotating clamp 442 and stretch the photoresist liquid on the wafer W to form a coating.
Moreover, these processing units U are enclosed spaces. That is, for example, as shown in Fig. 35, while the developing unit D and the like are divided from other spaces by the wall 447, the various parts between the developing unit D1 and the coating unit C1 are also divided by the partition wall 448, Each part of the aforementioned wall part 447 such as the developing unit D1 forms an interface 440 corresponding to the position of the arm 451 of the substrate conveying member MA.
In addition, for each part divided by the wall part 447 and the partition wall 448, the impurities are removed and adjusted to a certain temperature, such as the coating temperature of the developer solution 23°C, and air at a certain temperature, whereby these areas are formed Ambient gas adjusted with high precision.
That is, as shown in Figure 35, for example, the divided processing unit U is provided with a filter unit F1 covering the upper side, and the ambient gas recovered from the lower part of the processing unit U is discharged to the factory exhaust system, on the other hand, part of it is introduced into the filter device 449, and here, the air purified by the filter 449 passes through the filter unit F1 and blows down and out into each part.
The aforementioned filter unit F1 has a chemical filter and a suction fan to remove alkali components such as ammonia or amines in the air and add acid components when using a filter for purifying the air or a chemically amplified photoresist. Wait. In addition, the aforementioned filter device 449 has an impurity removal part for removing impurities, a heating mechanism, a humidification mechanism, a sending part for sending out air, and the like.
For example, in the case of using a chemically amplified photoresist as a photoresist liquid, once a small amount of ammonia contained in the air and alkali components such as amines produced by wall paint come into contact with the acid on the surface of the photoresist, it can be suppressed as described later. The catalytic reaction caused by the acid deteriorates the shape of the pattern, so it is necessary to remove the alkali component. Therefore, since it is necessary to prevent the alkali component from entering the development process atmosphere, the processing unit should be set in a closed space and a chemical filter should be used to prevent the intrusion of the alkali component from the outside.
The aforementioned substrate transport member MA is the same as that shown in FIG. 23, for example. The processing station S2 is adjacently connected to the inner surface station S3 of the interface portion, and the inner side of the interface station S3 is connected to the exposure device S4 for exposing the wafer W on which the photoresist film is formed. The inner surface station S3 of the interface has a CHP device (Chilling Hot Plate Process Station) 406 for suppressing the resolution reaction of the photoresist to the wafer W. The multi-stage scaffold unit R4, and the scaffold unit R4 here and the aforementioned processing station S2 And the transfer arm A that transfers the wafer W between the rack unit R2 and the exposure device S4, and therefore constitutes the processing station S2 and the exposure device S4 while the wafer W is transferred, and the exposure in the station S3 The subsequent wafer W is transported to the CHP device 406 in a state in which the progress of the photoresist resolution reaction is suppressed, where a heating process to promote the photoresist resolution reaction and a cooling process to stop the photoresist resolution reaction are performed.
To illustrate an example of the configuration of such an interface station S3, for example, when viewed from the side S1 of the card gate station gate station, the scaffold unit R4 is set on the right side, and the scaffold unit R4 is set on the right side for the processing station S2 and exposure The wafer W is transferred between the device S4 and the rack unit R4, for example, a transfer arm A that can move up and down, move left and right, and move forward and backward, and rotate around a vertical axis.
As shown in FIG. 36A to FIG. 36D, the aforementioned CHP device 406 has a processing chamber for forming a loading port 460 of the wafer W, a heating plate 461 for heating the wafer W, and a heating plate 461 for cooling the wafer W. For the cooling plate 462 of the wafer W, the wafer W is first placed on the heating plate 461 and heated to a certain temperature (refer to Fig. 36A), for example, the wafer W is taped from the heating plate 461 with the protruding pins 463, and at the same time The cooling plate 462 is moved to the position below the wafer W by the conveying member 464, and the wafer W is transferred to the cooling plate 462 (refer to FIG. 36B and FIG. 36C), and then the wafer W will be placed The state of the cooling plate 462 moves to the side of the heating plate 461 to cool the wafer W to a certain temperature (Fig. 36D). This device controls the heating time by transferring the wafer W between the heating plate 461 and the cooling plate 462 , It can prevent overheating.
The transfer arm A is an arm 456 that holds the wafer W. This arm 456 is configured to move freely in the arranging direction (Y direction) of the chucking gate of the chucking station S1, and the rest of the structure is the same as the aforementioned substrate transportation member. For example, the conveying arm A-based rotation driving unit 455 can move along the guide rail 457 provided in the Y direction, thereby constituting the arm 456 to move freely in the X and Y directions, freely rise and fall, and freely rotate around the vertical axis.
Moreover, this interface station S3 is a confined space. That is, for example, as shown in FIGS. 37 and 38, the wall portion 471 is used to divide the space from other spaces, and the position of the arm 456 of the conveying arm A corresponding to the wall portion 471 forms an interface 472.
The aforementioned interface station S3 has a chemical filter and a suction fan to remove alkali components in the air, such as ammonia or amines, and add acid components when using filters and chemically amplified photoresists to purify the air. The filter unit F2 of other equipment is installed to cover the upper side. Like the processing unit, the ambient gas recovered from the lower part of the processing station S3 is discharged to the factory exhaust system. On the other hand, a part of it is introduced into the filter device 473, and Here, the cleaned air of the filter device 473 passes through the aforementioned filter unit F2 and is blown down into each part and blown out.
The aforementioned filtering device 473 has an impurity removal unit for removing impurities, a heating mechanism, a humidifying mechanism, and a delivery unit for sending out air. In this way, the interface station S3 is configured to remove impurities and suppress a certain temperature resolution. The reaction proceeds, and it is cooled to a degree that does not condense, for example, about 10 to 15°C, and air adjusted to a certain temperature is sent out.
In addition, this interface station S3 is between the area where the rack unit R4 is installed and the area where the transfer arm A is installed, and is divided by a partition wall 474, where the partition wall 474 corresponds to each of the wafers w of the CHP device 406 The position of the carry-out entrance 460 forms the transfer interface 475 of the wafer w. In this embodiment, the carry-out entrance 460 and the document interface 475 form a free opening and closing state by switches 465 and 476 respectively, and the opening and closing of these switches 465 and 476 are The timing is controlled by the control unit 477.
Next, the effect of the aforementioned implementation mode will be explained. First, the card gate 422 containing 25 wafers W is transferred to the card gate station 421 by an automatic transfer robot (or operator), and the wafer W is taken out from the card gate 422 by the transfer arm 423 and placed in processing The transfer part 434 of the scaffold unit R1 of the station S2.
This wafer W is transported by a path of substrate transport member MAhydrophobicization part 433 of shelf unit Rcooling part 432 of shelf unit Rsubstrate transport member MAcoating unit C, and the wafer W is hydrophobicized After curing, the temperature is adjusted by cooling to a certain temperature, and the photoresist liquid is coated at a certain temperature, for example, 23° C. in the coating unit C.
The wafer W coated with the photoresist liquid is transported and the temperature is adjusted through the path of the substrate conveying member MA the heating part 431 of the shelf unit R the substrate conveying member MA the cooling part 432 of the shelf unit R The substrate conveying member MA the transfer part 434 of the shelf unit R2 the conveying arm A of the interface station S3 the via path of the exposure device S4 is conveyed and exposed.
The exposed wafer W is transported by the path of the exposure device S4 the transfer arm A of the interface station S3 the CHP device 406 of the shelf unit R4. First, the heating plate 461 of the CHP device 406 is heated to a certain temperature, and then The temperature is adjusted by cooling the cooling plate 462 to a certain temperature.
At this time, since the transfer arm A and the CHP device 406 are partitioned by a partition wall 474, the switch 465 of the CHP device 406 and the switch 476 corresponding to the interface 475 are turned on in order to transfer the wafer W. The wafer W is transported to the heating plate 461 of the aforementioned CHP device 406, and then these switches 465 and 476 are turned off, and then certain processing is performed on the heating plate 461 and the cooling plate 462. Then, the switch 465 of the CHP device 406 and the switch 476 of the partition wall 474 are turned on to deliver the wafer W to the transfer arm A, and then these switches 465 and 476 are turned off.
Here, the present invention has the wafer W transport area from the exposure device S4 to the heating part (heating plate 461) that promotes the photoresist resolution reaction process to suppress the photoresist resolution reaction, and adjust to prevent condensation The temperature of a certain degree is, for example, a characteristic of 10-15°C. Therefore, in this embodiment, while adjusting the interface station S3 to 10-15°C, a CHP device 406 is installed in the interface station S3.
The chemically amplified photoresist is described here. As shown in Figs. 40A-40C, this light contains a main component of the raw resin 481, a protective group 482 for inhibiting the dissolution of the raw resin 481 in the developing solution, and the light The acid generator 483 has the property of sensitizing the entire exposed area with less exposure energy.
This kind of photoresist, as shown in Fig. 40A, generates an acid 484 from the photoacid generator 48 by exposure, and secondly, as shown in Fig. 40b, heat treatment and the use of heat energy are used to generate an acid 484 from the resin 481. The protective group 482 is cut to be soluble in an alkaline solution. Secondly, since the acid 484 cuts other protective groups 482, this reaction will occur in a chain reaction. Then, the chain reaction is stopped by a cooling process, and thereafter, as shown in FIG. 40C, the area soluble in the alkali solution is removed by the aforementioned chain reaction by a development process to form a certain pattern. In Fig. 40A to Fig. 40C, the 485 series substrate, the 486 series photoresist, and the 487 series form a mask with a certain pattern.
Such a photoresist acts as a catalyst by the acid 484 generated by the exposure, so even if it progresses slowly, the photoresist resolution reaction (reaction of cutting the protective group 382 from the raw resin 481) will proceed immediately after the exposure. However, the progress rate of this resolution reaction depends on the temperature, and it is lower than room temperature and at a temperature that does not cause condensation, for example, at a temperature of about 10 to 15°C. Like a state of reaction.
Therefore, by placing the exposed wafer on the heating plate 461W and passing it in the aforementioned transport area adjusted to a temperature of 10-15° C., the resolution reaction of the photoresist during transport can be suppressed. In addition, the reason why the cooling temperature of the wafer W in the transfer area is made so that the cooling temperature of the wafer W does not reach the level of condensation is that when dew adheres to the surface of the wafer W, the acid 384 (acid near the surface) 484 at the photoresist interface is removed. Absorbed into the photoresist liquid, resulting in uneven resolution progress and development line width.
Here, in this embodiment, the heating plate 461 of the CHP device 406 uses the acid 484 to cut the protective group 482 from the resin 481, heat treatment is performed to dissolve the alkali solution, and the cooling plate 462 stops the aforementioned chain reaction. Cooling treatment.
In this way, the wafer W that has been processed in the CHP device 406 passes through the transfer arm A of the interface station S3 the transfer section 434 of the rack unit R2 of the processing station S2 the substrate transfer member MA the developing unit D The wafer W is transported by the path, and the wafer W is subjected to a certain temperature in the developing unit D, for example, the application temperature of the developing liquid is 23° C., and the developing process is performed.
Thereafter, the wafer W is transferred by the substrate conveying member MA the heating part 431 of the rack unit R the substrate conveying member MA the cooling part 432 of the rack unit R the substrate conveying member MA the transfer part 434 of the rack unit R1 transfer The portion 423 is transported via a path, and once heated to a certain temperature and then cooled to a certain temperature, the wafer W is returned to the original card gate 422 through the transfer portion 434, for example.
Here, the wafers W in the processing station S2 are sequentially transferred to the transfer part 434 of the rack unit R1, and then from the empty hydrophobizing part 433 the empty cooling part 432 of the shelf units R1, R2, and R3 empty Coating unit C heating part 431 of the scaffold unit R1, R2, R3 heating part 431 of the empty scaffold unit R1, R2, R3 cooling part 432 of the empty scaffold unit R1, R2, R3 interface The path of the station S3, and the exposed wafer W can be interfaced with the CHP device 406 of the empty rack unit R4 of the station S3 the empty display device 3D of the rack unit R2 of the processing station S2 empty display The image unit Dthe heating part 431 in the empty space of the shelf units R1, R2, R3the cooling part 432 in the empty space of the shelf units R1, R2, R3, and the delivery part 434 of the shelf unit R1 is transported.
In the above-mentioned embodiment, the exposed wafer W is cooled to a temperature that does not condense and is transported to the heating section. Therefore, the uniformity of the developing line width can be improved. That is, the wafer W exposed by the exposure device S4 is transported to the heating section through a certain transport area, but the transport time from the exposure device S4 to the heating section is constant, so the photoresist resolution during the transport period The reaction proceeded to about the same extent.
In addition, since the temperature of the wafer is adjusted to a temperature that does not condense in this transport area and the wafer is cooled to the extent that the resolution reaction of the photoresist can be suppressed, the wafer W in the transport area can be called The progress of the aforementioned resolution reaction is approximately inhibited. Then, if the exposed wafer W is transported to the CHP device 406 of the next process in this state, the progress of the aforementioned resolution reaction of the wafer W when it is transported to the CHP device 406 is approximately the same state, so the device 406 can always heat the wafer W in the same state, and the heat treatment also has the aforementioned degree of progress. In this way, the unevenness of the development line width can be suppressed and the uniformity of the development line width can be improved.
In addition, in this embodiment, since the CHP device is installed in the interface station S3, a transport area from the exposure device S4 to the heating unit is formed in the interface station S3. Here, the volume of the interface station S3 is much smaller than that of the processing station S2. Therefore, the conveying area from the exposure device S4 to the heating part becomes narrow, so this conveying area is made to carry out the temperature. The high-precision adjustment of the humidity is advantageous in terms of cost.
Furthermore, since the interface station S3 is divided into the CHP device 406 and the transfer arm A by the partition wall 474, the influence of the heating plate 461 of the CHP device 406 on the area where the transfer arm A is installed can be suppressed, and the interface station can be easily adjusted. The temperature and humidity in S3.
In the present invention described above, the scaffold unit R4 having the multi-stage CHP device 406 can also be installed in the processing station S2 as shown in FIG. 41. In this embodiment, the aforementioned scaffold unit R4 is installed on the right side of the back side of the substrate conveying member MA from the card gate station S1, and the scaffold unit R2 is provided on the left side of the substrate conveying member MA. The wafer W is transferred in between, and the transfer part 434 of the rack unit R2 and each CHP device 406 of the rack unit R4 perform the transfer of the wafer W between the transfer arm A of the interface station S3.
The shelf unit R4, for example, as shown in Figure 42, is divided from other spaces by a wall 481, and an interface is formed in the wall 481 at the position corresponding to the arm 361 of the substrate conveying member MA and the position corresponding to the conveying arm A4561. 482 and 483, these interfaces 482 and 483 respectively constitute free switches by means of switches 484 and 485.
In addition, each CHP device 406 has, for example, a filter for purifying air, and when a chemically amplified photoresist is used, it has a chemical filter for removing alkali components in the air, such as ammonia or amines, and adding acid components. The filter unit F3 of equipment such as air filter, suction fan, etc., the filter unit is set to cover the upper side, and the ambient gas recovered from the lower part is discharged to the factory exhaust system. On the other hand, part of it is introduced into the filter device 483. The cleaned air passes through the aforementioned filter unit F3 and is blown down into each part and blown out.
The aforementioned filter device 483 has an impurity removal part for removing impurities, a heating mechanism, a humidification mechanism, and a delivery part for sending out air. In this way, the scaffold unit R4 is configured to remove impurities and send it to a certain level. Air with a certain temperature and a certain humidity, thereby forming a state where alkali components will not enter this area.
In addition, when the shelf unit R5 of the interface station S3 transports the wafer W from the exposure apparatus S4 to the shelf unit R4, the CHP device 406 has a multi-stage shelf section for waiting the wafer W, and this shelf unit R5 is transported by Arm A is set in an accessible position. In this example, the photoresist is suppressed from the resolution reaction in the interface station S3, and the temperature is adjusted to a temperature that does not condense, such as 10-15°C. The other structure is the same as the aforementioned substrate processing apparatus, and the structure of each rack unit R is also the same as the aforementioned.
In this example, the exposed wafer W is transported to, for example, the shelf part of the shelf unit R5 by the transport arm A, and waits to be transported to the heating plate 461 of the CHP device 406, and transported to a certain point by the transport arm A. CHP device 406. At this time, the temperature in the interface station S3 is adjusted to about 10~15°C, so the transport from the exposure device S4 to the heating plate 461 can be performed while suppressing the photoresist's resolution reaction, so the uniformity of the development process can be improved. .
Next, other examples of the present invention will be described with reference to FIGS. 43 and 44. This embodiment mode replaces the temperature adjustment in the interface station S3, and when the wafer W is transported from the exposure device S4 to the heating plate 461 of the CHP device 406, it is used to suppress the photoresist from undergoing a resolution reaction while processing the wafer W. Conveying while supplying gas adjusted to a certain ambient gas.
In this example, the transfer arm A, which is provided in the interface station S3 and transports the wafer w between the processing station S2 and the exposure device S4, has two arms 491, 492, as shown in, for example, FIGS. 43 and 44. , The upper arm 491 is a dedicated arm for transporting the exposed wafer w to the CHP device 406, and the lower arm 492 is a dedicated arm for transporting the wafer W before exposure from the processing station S2 to the exposure device S4 492.
Above the upper arm 491 is provided a gas supply part 409 for supplying a gas adjusted to a certain ambient gas to the wafer W supported on the arm 491. Below the upper arm 491 is provided if it will not be supported on the lower side. The wafer W on the arm 492 is in contact with the aforementioned blocking plate 493 for the gas adjusted to a certain ambient gas.
The gas supply portion 409 is formed in, for example, a flat cylindrical shape, and a circular opening surface 495 with a large number of gas supply holes 494 is mounted on the substrate so as to oppose the wafer W on the arm 491 via the support arm 496. The back of the table 452 (the back of the traveling direction of the arm 451). The opening surface 495 of the aforementioned gas supply portion 409 is set to a structure capable of supplying air to a larger area than the wafer W supported on the arm 451.
Such a gas supply part 409 is formed to remove impurities, at a certain temperature, for example, the photoresist is prevented from undergoing a resolution reaction, and the temperature is about 10-15°C without condensation, and the gas adjusted to a certain temperature is passed through the gas supply pipe For example, air is supplied from the filter device 497, whereby the air is sent out to the wafer W held by the arm 451 through the gas supply hole 494. Here, it will be described that the aforementioned filter device 497 has an impurity removal part for removing impurities, a heating mechanism and a humidification mechanism, a sending part for sending out air, and the like. In addition, the aforementioned blocking plate 493 is used to prevent the gas from the gas supply part from contacting the wafer W supported on the lower arm 492, and is set to cover a larger area than the wafer W supported on the arm 492. The size of the area.
In this embodiment, when the wafer W is transported from the exposure device S4 to the CHP device 406 by the transport arm A, air is supplied to the wafer W at a temperature adjusted to a level that does not dew condensation, so it is not easy to perform photoresist Resolution reaction. Therefore, the wafer W can be transported to the CHP device 406 in a state where the resolution reaction of the photoresist is suppressed, the occurrence of unevenness in the image can be suppressed, and uniform processing can be performed.
It is explained here that the gas supplied to the wafer W in this example can use inert gas such as nitrogen other than air, or a mixed gas of air and inert gas. Also, the arm 491 for transporting the wafer W after exposure can be provided on the lower side, and the arm 492 for transporting the wafer W before exposure can be provided on the upper side, and the gas supply part 409 and the arm A can not be installed integrally. , And the wafer W held on the arm 491 can be individually arranged as if gas is supplied to the wafer W.
It is also possible to combine the example of conveying while supplying gas adjusted to a certain temperature on the wafer W with the example of controlling the temperature of the conveying area itself. In this case, the photoresist resolution can be suppressed. In the reaction state, the wafer W is transferred to the CHP device 406.
Although the control of the transport area has been described above, it is also possible to suppress the photoresist from proceeding with the resolution reaction by controlling the amount of moisture attached to the wafer W. That is, the acetal chemically amplified photoresist needs a humidity of about 45% during the photoresist resolution reaction, and it has the property that the resolution reaction is not easy to occur in the case of insufficient humidity. Therefore, the humidity in the conveying area should be set to a low humidity state that is lower than the air of 20% or less, and if the wafer W is allowed to stand by for a certain period of time in this area, the amount of attached moisture on the wafer W should be reduced. It is made that the amount of water attached to the wafer W is less than when it is transported to the interface station S3 after exposure, so that the resolution reaction of the photoresist can be further suppressed.
Specifically, it is possible to form a configuration in which a gas whose humidity is adjusted by a filter device 473 or the like is supplied to the interface station S3 or the gas supply unit 409. Here, it is explained that the gas supplied to the interface station S3, etc., can be inert gas such as air and nitrogen, or a mixed gas of air and inert gas, and the like.
In addition, the transfer area of the wafer W can also be set up to control the temperature of the transfer area and manage the amount of moisture attached to the wafer W. In this case, the photoresist can be prevented from undergoing a resolution reaction, so a higher image line can be ensured Wide uniformity.
In addition, the CHP device 406 is not limited to the interface station S3, but can also be installed in the processing station S2. However, if the temperature and humidity of the transport area between the exposure device S4 and the CHP device 406 tend to change, it is necessary to have The transport time is short and the resolution reaction of the photoresist is complete during transport. Therefore, the CHP device 406 is preferably installed in the interface station S3, and preferably near the exposure device S4.
In the present invention described above, instead of the hydrophobic treatment, an anti-reflection film may be formed on the surface of the wafer W before the photoresist is applied. In addition, in forming the anti-reflection film, when a chemically amplified photoresist is used, reflection occurs on the underside of the photoresist during exposure, so it is necessary to prevent this. Moreover, the substrate referred to in the present invention is not limited to wafers, but can also be glass substrates for liquid crystal displays.
As described above, according to the present invention, the substrate can be transported from the exposure device to the heating section in a state where the resolution reaction is suppressed, so that the uniformity of the line width of the image can be improved.
(The sixth implementation mode)
The embodiment shown in Figures 43 and 44 is to supply gas with controlled temperature and humidity from the gas supply hole 494 of the gas supply part 409. However, as shown in Figure 45, the gas supply part (upper Cover the gas supply hole (air blowing port) 503 of 502 and supply the inert gas from the inert gas tank 501 such as nitrogen to the wafer W on the arm (pin group) 491. The air blowing port 503 may also be provided corresponding to the shape of the pin group 491 as shown in FIG. 45, and may be provided corresponding to the circular shape of the wafer W as shown in FIG. 46.
According to such a structure, for example, the photoresist is not subjected to water decomposition due to moisture in the air during the transportation of the substrate after the photoresist coating, or combined with oxygen in the air to cause the influence on the pattern resolution.
In addition, the temperature and humidity of the inert gas can also be controlled in the state shown in Figs. 43 and 44.
In addition, if the above-mentioned inert gas is supplied when the wafer W is transferred from the coating device to the heat treatment device, it is possible to supply a gas with a good effect.
Schematic description
Fig. 1 is a plan view showing the appearance of the coating development processing system according to the first embodiment of the present invention.
Figure 2 is a front view of the coating development processing system of Figure 1.
Fig. 3 is a back view of the coating development processing system of Fig. 1.
Fig. 4 schematically shows the heating in the coating development processing system of Fig. 1. Cross-sectional view of the cooling treatment device.
Fig. 5 is an explanatory diagram showing the flow of inert gas supplied to the coating and developing processing system of Fig. 1.
Figure 6 is an explanatory diagram showing the flow of inert gas when the ambient gas in the coating and development processing system is an inert gas and is reused
Fig. 7 is a plan view showing the appearance of the coating development processing system of the first embodiment of the present invention.
Figure 8 is the front view of the coating development processing system of Figure 7
Figure 9 is an explanatory diagram of the longitudinal section of the processing station
Figure 10 is an explanatory drawing of the longitudinal section of the interface
Figure 11 schematically shows the heating in the coating development processing system of Figure 7. Cross-sectional view of the cooling treatment device.
Figure 12 shows the flow of the inert gas supplied to the interface as viewed from the side of the coating and development processing system.
Fig. 13 is a longitudinal sectional explanatory view showing the flow state of the inert gas supplied to the interface portion.
Fig. 14 is an explanatory diagram showing the state of the photoresist film exposed to the circuit pattern.
Figure 15 is an explanatory diagram of the photoresist film after development.
Fig. 16 is a plan view of a substrate processing apparatus according to a third embodiment of the present invention.
Fig. 17 shows a schematic plan view of a coating and developing device according to a fourth embodiment of the present invention.
Figure 18 shows an overview perspective view of the aforementioned coating and developing device.
Figure 19 shows a side view of an example of the shelf unit and the development unit of the aforementioned coating and development device.
Figure 20 is a side view showing an example of the shelf unit of the aforementioned coating and developing device.
Figures 21A to 21D show cross-sectional views of the CHP device installed in the aforementioned scaffold unit.
Figure 22 shows a cross-sectional view of an example of the aforementioned developing unit.
Figure 23 shows a cross-sectional view of the substrate transport member.
Fig. 24 shows a cross-sectional view of an example of the reaction suppression unit.
Figure 25 shows a perspective view of an example of an interface station.
Figures 26A~26C are explanatory diagrams of the resolution reaction of chemically amplified photoresist.
Fig. 27 shows a cross-sectional view of another example of the reaction suppression unit.
Figure 28 shows a schematic plan view of a conventional coating and developing device.
Figure 29 is used to illustrate an application example of the above implementation.
Figure 30 is used to illustrate an application example of the above implementation.
Figure 31 is a schematic plan view of a coating and developing device according to a fifth embodiment of the present invention.
Figure 32 shows an overview perspective view of the aforementioned coating and developing device.
Figure 33 shows a side view of an example of the shelf unit and the developing unit of the aforementioned coating and developing device.
Figure 34 shows a side view of an example of the shelf unit of the aforementioned coating and developing device.
Figure 35 shows a cross-sectional view of an example of the aforementioned developing device.
Figures 36A to 36D show cross-sectional views of the CHP device installed in the aforementioned scaffold unit.
Figure 37 shows a perspective view of an example of an interface station.
Figure 38 shows a cross-sectional view of an example of an interface station.
Figure 39 shows a side view of an example of the CHP device and the partition wall.
Figures 40A to 40C show explanatory diagrams of the resolution reaction of chemically amplified photoresist.
Figure 41 is a cross-sectional view showing another example of the coating and developing device.
Figure 42 shows a cross-sectional view of another example of a scaffold unit equipped with a CHP device.
Figure 43 shows a cross-sectional view of another example of the coating and developing device.
Fig. 44 is an exploded perspective view of another example of the coating and developing device.
Fig. 45 is an explanatory diagram of the sixth embodiment of the present invention.
Fig. 46 is an explanatory diagram of another example of the sixth embodiment of the present invention.
Symbol description of main components
1. . . Coating development processing system
2. . . Khazha Station
3. . . Processing station
4. . . Interface Department
5. . . Exposure processing device
10. 60. . . Spacer
70, 71, 72. . . Gas supply device
76, 76, 77. . . exhaust pipe
W. . . Wafer
Every citation, both ways
| Document | Relation | Office | Cited during |
|---|---|---|---|
| TWI800533B | Cited by | Taiwan Province of China | Examiner |
23 members in 5 offices
Priority claims8
| Document | Office | Kind | Date |
|---|---|---|---|
| 200024221 | Japan | – | |
| 2000024221 | Japan | A | |
| 200038509 | Japan | – | |
| 2000038509 | Japan | A | |
| 2000133304 | Japan | – | |
| 2000133304 | Japan | A | |
| 2000137509 | Japan | – | |
| 2000137509 | Japan | A |
Members23
| Document | Office | Kind | |
|---|---|---|---|
| US2001013161A1 | United States of America | A1 | |
| JP2001291664A | Japan | A | |
| JP2001308005A | Japan | A | |
| JP2001319845A | Japan | A | |
| JP2001319864A | Japan | A | |
| KR20020010442A | Republic of Korea | A | |
| TW511169BThis record | Taiwan Province of China | B | |
| US6632281B2 | United States of America | B2 | |
| US2004050321A1 | United States of America | A1 | |
| JP3590327B2 | Japan | B2 | |
| JP3645492B2 | Japan | B2 | |
| KR20060090212A | Republic of Korea | A | |
| JP3818631B2 | Japan | B2 | |
| KR100698352B1 | Republic of Korea | B1 | |
| KR100701578B1 | Republic of Korea | B1 | |
| US7208066B2 | United States of America | B2 | |
| US2007127916A1 | United States of America | A1 | |
| US2007128356A1 | United States of America | A1 | |
| US7401988B2 | United States of America | B2 | |
| SG145526A1 | Singapore | A1 | |
| SG166005A1 | Singapore | A1 | |
| SG168411A1 | Singapore | A1 | |
| SG185822A1 | Singapore | A1 |
2 legal events, as the office reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | |
|---|---|---|
| Annulment or lapse of patent due to non-payment of feesLapsedMM4A | MM4A | |
| Issue of patent certificate for granted invention patentGrantedGD4A | GD4A |
Numbers
- Publication
- 511169
- Application
- 90101957
Titles4
- Chinese
- 基板處理裝置及基板處理方法
- English
- SUBSTRATE PROCESSING APPARATUS AND SUBSTRATE PROCESSINGMETHOD
- Unlabeled
- 基板處理裝置及基板處理方法
- Unlabeled
- Substrate processing device and substrate processing method
Classification
- CPC, 10
- H10P72/0448
- H10P72/0458
- G03F7/70991
- H10P72/0402
- H10P72/0452
- H10P72/0461
- H10P72/3302
- H10P72/3411
- G03F7/70875
- H10P72/0431
- IPC, 2
- H10P72 30
- H10P95 00