Substrate support with electrostatic chuck having dual temperature zones
Abstract
An electrostatic chuck for receiving a substrate in a substrate processing chamber comprises a ceramic puck having a substrate receiving surface and an opposing backside surface with a plurality of spaced apart mesas. An electrode is embedded in the ceramic puck to generate an electrostatic force to hold a substrate. Heater coils located at peripheral and central portions of the ceramic puck allow independent control of temperatures of the central and peripheral portions of the ceramic puck. The chuck is supported by a base having a groove with retained air. The chuck and base can also have an overlying edge ring and clamp ring.

Term
No projected expiry on record.
- Priority
- Filed
- Granted
- Today
60 claims: 54 independent, 6 dependent
- 1一種用於一處理腔室的夾持環,所述處理腔室包括一具有一頂表面的底座和一邊緣環,所述頂表面具有一用於支撐一靜電夾盤的夾盤容納部分和一週邊部分,所述靜電夾盤包括一陶瓷圓盤,所述陶瓷圓盤具有一包括一第一和一第二臺階的週邊壁架,所述邊緣環設置在所述陶瓷圓盤的第二臺階上,所述夾持環包括:a)一環形主體,具有一用於支撐所述邊緣環的頂表面以及一具有多個孔的底表面,所述底表面的多個孔使得適於固定到所述底座的頂表面的週邊部分;b)一上唇部,向內徑向延伸以放置在所述陶瓷圓盤的週邊壁架的第一臺階上;c)一徑向外部側表面;以及d)一足部,從所述徑向外部側表面向下延伸以設置在所述底座的頂表面的週邊部分上。
- 2如申請專利範圍第1項所述的夾持環,其中所述環形主體通過與所述孔匹配的螺絲或螺栓固定到所述底座的頂表面的週邊部分。
- 3如申請專利範圍第1項所述的夾持環,其中所述上唇部包括一向下延伸的凸塊,其放置在所述陶瓷圓盤的週邊壁架的第一臺階上。
- 4如申請專利範圍第3項所述的夾持環,其中所述環形主體包括從所述向下延伸的凸塊徑向地向外延伸的一底部凹陷。
- 5如申請專利範圍第1項所述的夾持環,其中所述夾持環的上唇部包括一設置在所述陶瓷圓盤的週邊部分的第一臺階上的底表面。
- 6如申請專利範圍第5項所述的夾持環,其中所述底表面含有聚合物。
- 7如申請專利範圍第6項所述的夾持環,其中所述聚合物包括聚醯亞胺。
- 8如申請專利範圍第1項所述的夾持環,其中所述夾持環含有金屬或陶瓷。
- 9如申請專利範圍第8項所述的夾持環,其中所述陶瓷含有氧化鋁。
- 10一種用於一處理腔室的邊緣環,所述處理腔室具有:i)一底座;ii)一底座上的一靜電夾盤,所述靜電夾盤包括 一陶瓷圓盤,所述陶瓷圓盤包括一具有一臺階的週邊壁架;以及iii)一夾持環,所述夾持環具有一上唇部、一外部側表面與一頂表面,所述上唇部向內徑向延伸以放置在所述陶瓷圓盤的週邊壁架的臺階上,所述邊緣環,包括:a)一帶,包括一設置在所述夾持環的頂表面上的足部;b)一環形外壁,圍繞所述夾持環的所述外部側表面;以及c)一內凸緣,覆蓋所述陶瓷圓盤的週邊壁架的臺階。
- 11如申請專利範圍第10項所述的邊緣環,其中所述帶含有陶瓷。
- 12如申請專利範圍第11項所述的邊緣環,其中所述陶瓷含有石英。
- 13一種用於一處理腔室的邊緣環,所述處理腔室具有:i)一底座;ii)所述底座上的一靜電夾盤,所述靜電夾盤包括一陶瓷圓盤,所述陶瓷圓盤包括一具有一臺階的週邊壁架;以及iii)一夾持環,所述夾持環具有一頂表面、一上唇部以及一外部側表面,所述上唇部從所述頂表面向內徑 向延伸以放置在所述陶瓷圓盤的週邊壁架的臺階上,所述邊緣環,包括:a)一楔形的帶,包括一傾斜的上表面和一覆蓋所述夾持環的頂表面的下表面;b)一內凸緣,從所述楔形的帶向內徑向地延伸,所述內凸緣包括一足部,該足部能夠放置在所述陶瓷圓盤的週邊壁架的臺階上;以及c)一外凸緣,從所述楔形的帶向外徑向地延伸,所述外凸緣包括一徑向向內的襯面,該徑向向內的襯面覆蓋所述夾持環的外部側表面。
- 14如申請專利範圍第13項所述的邊緣環,其中所述內凸緣包括一關於所述楔形帶的下表面逐漸升高的底表面。
- 15如申請專利範圍第13項所述的邊緣環,其中所述內凸緣包括一徑向向內的周界,所述徑向向內的周界具有一上臺階和一下臺階。
- 16如申請專利範圍第13項所述的邊緣環,其中所述內凸緣具有一弧形邊緣,所述邊緣與所述楔形帶的傾斜上表面結合。
- 17如申請專利範圍第13項所述的邊緣環,其中所述外凸 緣包括一關於所述楔形帶的下表面向下延伸的底壁。
- 18如申請專利範圍第13項所述的邊緣環,其中所述外凸緣包括一傾斜的周界邊緣。
- 19如申請專利範圍第13項所述的邊緣環,其中所述楔形帶含有陶瓷。
- 20如申請專利範圍第19項所述的邊緣環,其中所述陶瓷含有石英。
- 21一種用於在一處理腔室中容納一基材的靜電夾盤,所述靜電夾盤包括:a)一陶瓷圓盤,包括:i)一基材容納表面,具有多個臺面的突起平臺,所述突起平臺由一凹槽圖案分開;ii)一背面,相對所述基材容納表面,所述背面包括多個隔開的第二臺面,所述第二臺面係藉由多個間隙而彼此隔開;iii)多個熱傳送氣體導管,穿過所述陶瓷圓盤並且在所述基材容納表面上的所述凹槽圖案中的週邊埠及中心埠終止,所述氣體導管能夠為所述基材容納表面的不同區域提供熱傳送氣體;以及 iv)一週邊壁架,具有一第一臺階和一第二臺階,所述第二臺階從所述第一臺階徑向向外並且比所述第一臺階低;以及b)一電極,嵌在所述陶瓷圓盤中以產生靜電力從而保持一設置在所述基材容納表面上的基材。
- 22如申請專利範圍第21項所述的夾盤,其中所述多個臺面的突起平臺各包括從約10至約1000個臺面。
- 23如申請專利範圍第21項所述的夾盤,其中所述臺面為突起的圓柱突起。
- 24如申請專利範圍第21項所述的夾盤,其中所述臺面具有從約5微米至約50微米的平均直徑。
- 25如申請專利範圍第21項所述的夾盤,其中所述臺面具有從約0.5毫米至約5毫米的高度。
- 26如申請專利範圍第21項所述的夾盤,其中所述凹槽圖案包括彼此互連的徑向臂和環形臂。
- 27如申請專利範圍第21項所述的夾盤,其中所述週邊埠在弓形切塊處終止。
- 28如申請專利範圍第27項所述的夾盤,還包括圍繞所述週邊埠的徑向內氣體密封邊和徑向外氣體密封邊。
- 29如申請專利範圍第26項所述的夾盤,其中所述中心埠在所述徑向臂和環形臂的相交處終止。
- 30如申請專利範圍第21項所述的夾盤,其中所述陶瓷圓盤含有氧化鋁、氮化鋁、氧化矽、碳化矽、氮化矽、氧化鈦、氧化鋯、或其混合物。
- 31一種用於容納一基材於一處理腔室的靜電夾盤,所述靜電夾盤包括:a)一陶瓷圓盤,包括一基材容納表面和一相對的背面,所述基材容納表面具有多個臺面的突起平臺,所述突起平臺由一凹槽圖案分開,所述相對的背面包括多個隔開的第二臺面,所述第二臺面係藉由多個間隙而彼此隔開;b)多個熱傳送氣體導管,穿過所述陶瓷圓盤並且在所述基材容納表面上的埠內終止,以向所述基材容納表面提供熱傳送氣體;c)一電極,嵌在所述陶瓷圓盤中以產生靜電力從而保持一設置在所述基材容納表面上的基材;以及d)一第一加熱線圈和一第二加熱線圈,嵌入在所述 陶瓷圓盤中,所述加熱線圈係徑向隔開並且關於彼此呈同心圓設置,所述第一加熱線圈位於所述陶瓷圓盤的一週邊部分處且所述第二加熱線圈位於所述陶瓷圓盤的一中心部分處,藉此所述第一和第二加熱線圈允許獨立控制所述陶瓷圓盤的中心和週邊部分的溫度,並且與在所述陶瓷圓盤的背面上的臺面協作以允許調節一放置在所述陶瓷圓盤的基材容納表面上的一基材的溫度分佈。
- 32如申請專利範圍第31項所述的夾盤,其中所述臺面的突起平臺包括以下條件之至少一者:i)各突起平臺包括從約10至約1000個臺面;ii)臺面具有從約5微米至約50微米的平均直徑;及iii)臺面具有從約0.5毫米至約5毫米的高度。
- 33如申請專利範圍第31項所述的夾盤,其中所述凹槽圖案包括彼此互連的徑向臂和環形臂。
- 34一種用於容納一基材於一處理腔室的靜電夾盤,所述夾盤包括:a)一陶瓷圓盤,包括:i)一基材容納表面,具有多個臺面的突起平臺,所述臺面的突起平臺由一凹槽圖案分開;ii)一相對的背面,包括多個隔開的第二臺面,所 述第二臺面係藉由多個間隙而彼此隔開;及iii)一週邊壁架,具有一第一臺階和一第二臺階;b)多個熱傳送氣體導管,穿過所述陶瓷圓盤並且在所述基材容納表面上的埠內終止,以向所述基材容納表面提供熱傳送氣體;c)一電極,嵌在所述陶瓷圓盤中以產生靜電力從而保持一設置在所述基材容納表面上的基材;d)一第一和一第二獨立可控加熱線圈,係徑向隔開並且關於彼此呈同心圓設置,並嵌入在所述陶瓷圓盤中,所述第一加熱線圈位於所述陶瓷圓盤的一週邊部分處且所述第二加熱線圈位於所述陶瓷圓盤的一中心部分處。
- 35一種靜電夾盤,包括:a)一陶瓷圓盤,包括:i)一基材容納表面,具有多個第一臺面的突起平臺,所述突起平臺由一凹槽圖案分開;ii)一相對的背面,包括多個隔開的第二臺面,所述第二臺面係藉由多個間隙而彼此隔開;iii)多個熱傳送氣體導管,穿過所述陶瓷圓盤並且在所述基材容納表面上的所述凹槽圖案中的週邊埠及中心埠內終止,所述氣體導管能夠為所述基材容納表面的不同區域提供熱傳送氣體;以及iv)一週邊壁架,具有一第一臺階和一第二臺 階,所述第二臺階從所述第一臺階徑向向外並且比所述第一臺階低;b)一電極,嵌在所述陶瓷圓盤中以產生靜電力從而保持一設置在所述基材容納表面上的基材;以及c)一第一和一第二加熱線圈,嵌入在所述陶瓷圓盤中,所述加熱線圈係徑向隔開並且關於彼此呈同心圓設置並位於相同平面,所述第一加熱線圈位於所述陶瓷圓盤的一週邊部分處且所述第二加熱線圈位於所述陶瓷圓盤的一中心部分處。
- 36如申請專利範圍第35項所述的夾盤,其中所述第一和第二加熱線圈各包括一電阻加熱元件,所述電阻加熱元件包括鉬。
- 37如申請專利範圍第35項所述的夾盤,其中所述陶瓷圓盤含有氧化鋁、氮化鋁、氧化矽、碳化矽、氮化矽、氧化鈦、氧化鋯、或其混合物之至少一者。
- 38如申請專利範圍第35項所述的夾盤,其中於所述陶瓷圓盤之背面上的第二臺面各包括柱狀突起。
- 39如申請專利範圍第35項所述的夾盤,更包括嵌入在所述陶瓷圓盤中之一第一和一第二光學溫度感測器,所述第 一感測器位於所述陶瓷圓盤的中心部分處且所述第二感測器位於所述陶瓷圓盤的週邊部分處。
- 40如申請專利範圍第39項所述的夾盤,其中所述光學溫度感測器包括一於一光學纖維前方之含磷層,所述含磷層嵌入在一銅尖端中。
- 41一種用於減少製程沉積物形成在一靜電夾盤或保護所述靜電夾盤不受侵蝕的環組件,所述靜電夾盤係由一基材處理腔室中的一底座所支撐,所述靜電夾盤包括一陶瓷圓盤,所述陶瓷圓盤具有包括一第一和一第二臺階的一週邊壁架,且所述底座包括一頂表面,所述頂表面具有一夾盤容納部分和一週邊部分,所述週邊部分延伸超過所述夾盤,所述環組件包括:a)一夾持環,可固定到所述底座的頂表面的週邊部分,所述夾持環具有一唇部、一頂表面和一外部側表面,所述唇部向內徑向延伸以放置在所述陶瓷圓盤的週邊壁架的第一臺階上,以在所述陶瓷圓盤和所述底座的頂表面之間形成氣密封;以及b)一邊緣環,包括一帶、一環形外壁以及一凸緣,所述帶包含一放置在所述夾持環的頂表面上的足部,所述環形外壁圍繞所述夾持環的外部側表面,所述凸緣覆蓋所述陶瓷圓盤的週邊壁架的第二臺階, 藉此所述夾持環和所述邊緣環可協作以在所述基材處理腔室中處理基材期間減少製程沉積物形成在所述靜電夾盤上,並保護所述靜電夾盤不受侵蝕,所述靜電夾盤支撐於所述底座上。
- 42如申請專利範圍第41項所述的組件,其中所述邊緣環含有陶瓷。
- 43如申請專利範圍第42項所述的組件,其中所述陶瓷含有石英。
- 44如申請專利範圍第41項所述的組件,其中所述夾持環含有鋁或鈦。
- 45如申請專利範圍第41項所述的組件,其中所述夾持環的唇部包括一底表面,所述底表面放置在所述陶瓷圓盤的週邊壁架的第一臺階上,且其中所述底表面包括一聚合物層。
- 46如申請專利範圍第45項所述的組件,其中所述聚合物層包括聚醯亞胺。
- 47一種在處理腔室中用於容納一基材的基材支架,包括: a)一靜電夾盤,包括:i)一陶瓷圓盤,包括一基材容納表面和一相對的背面,以及一週邊壁架,所述週邊壁架具有一臺階;ii)多個熱傳送氣體導管,穿過所述陶瓷圓盤並且在所述基材容納表面上的埠內終止,以向所述基材容納表面提供熱傳送氣體;iii)一電極,嵌在所述陶瓷圓盤中,所述電極可被充電以產生靜電力從而保持一放置在所述基材容納表面上的基材;b)一底座,包括一具有一頂表面的金屬主體,所述頂表面包括一夾盤容納部分和一週邊部分,所述夾盤容納部分用以容納所述陶瓷圓盤的背面,所述週邊部分徑向向外延伸超過所述陶瓷圓盤;c)一邊緣環,設置在所述陶瓷圓盤的週邊壁架的臺階上,以與保持在所述陶瓷圓盤的容納表面上的基材的上部邊緣形成密封;以及d)一夾持環,固定到所述底座上的所述週邊部分,所述夾持環具有一唇部,所述唇部徑向向內延伸以放置在所述陶瓷圓盤的週邊壁架上,以與所述陶瓷圓盤形成氣密封。
- 48如申請專利範圍第47項所述的支架,其中所述邊緣環含有陶瓷。
- 49如申請專利範圍第48項所述的支架,其中所述陶瓷含有石英。
- 50如申請專利範圍第47項所述的支架,其中所述夾持環含有鋁或鈦。
- 51如申請專利範圍第47項所述的支架,其中所述夾持環的唇部包括一底表面,所述底表面放置在所述陶瓷圓盤的週邊壁架的第一臺階上,且其中所述底表面包括一聚合物層。
- 52如申請專利範圍第51項所述的支架,其中所述聚合物層包括聚醯亞胺。
- 53如申請專利範圍第47項所述的支架,其中所述陶瓷圓盤包括一第一加熱線圈和一第二加熱線圈,所述第一加熱線圈和第二加熱線圈係徑向隔開並且關於彼此呈同心圓設置,所述第一加熱線圈位於所述陶瓷圓盤的一週邊部分處且所述第二加熱線圈位於所述陶瓷圓盤的一中心部分處。
- 54如申請專利範圍第47項所述的支架,其中所述陶瓷圓盤的背面包括多個臺面。
- 55如申請專利範圍第至54項所述的支架,其中所述底座的夾盤容納表面包括一週邊凹槽以容納在所述陶瓷圓盤的背面的臺面周圍的空氣。
- 56如申請專利範圍第47項所述的支架,其中所述底座的頂表面包括一中心凹槽。
- 57如申請專利範圍第47項所述的支架,其中所述底座包括一用於向所述靜電夾盤的電極傳導電功率的電接頭組件,所述電接頭組件包括一陶瓷絕緣套,所述陶瓷絕緣套具有嵌入在其中的多個接線柱,用以供應電功率至所述電極和所述靜電夾盤的加熱線圈,每個所述接線柱係由一接觸帶環繞。
- 58一種在一基材處理腔室中用於支撐一靜電夾盤的底座,所述靜電夾盤包括:i)一陶瓷圓盤,具有一基材容納表面和一相對的背面;ii)多個熱傳送氣體導管,穿過所述陶瓷圓盤並在所述基材容納表面上的埠內終止,以向所述基材容納表面提供熱傳送氣體;iii)一電極,嵌入在所述陶瓷圓盤中以產生靜電力;以及iv)一第一和一第二加熱線圈,嵌入在所述陶瓷圓盤中,所述底座包括:a)一具有一頂表面的金屬主體,所述頂表面包括一 夾盤容納部分和一週邊部分,所述夾盤容納部分容納所述陶瓷圓盤的背面,所述週邊部分係徑向向外延伸超過所述陶瓷圓盤,所述夾盤容納表面包括一週邊凹槽,用以容納在所述陶瓷圓盤的背面周圍的空氣;b)一熱傳送氣體通路,用以供應熱傳送氣體至所述陶瓷圓盤中的熱傳送氣體導管;c)多個流體通道,位在所述金屬主體中用於迴流其中的流體;d)一電接頭組件,用於傳導電功率到所述靜電夾盤的電極,所述電接頭組件包括一陶瓷絕緣套,所述陶瓷絕緣套具有嵌入在其中的多個接線柱用以供應電功率到所述電極和所述靜電夾盤的加熱線圈,每個接線柱均被一接觸帶環繞,所述接觸帶含有一金屬並具有多個熱交換天窗。
- 59如申請專利範圍第58項所述的底座,其中所述陶瓷圓盤的背面包括多個臺面,且其中所述底座的夾盤容納表面上的所述週邊凹槽與所述臺面協作以控制來自所述陶瓷圓盤的一週邊部分的熱傳輸速率。
- 60如申請專利範圍第59項所述的底座,其中所述夾盤容納表面更包括一中心凹槽,所述中心凹槽與所述臺面協作以控制來自所述陶瓷圓盤的一週邊部分的熱傳輸速率。
Independent claims60
41 paragraphs in 1 section, as filed
Base material support of electrostatic chuck with dual temperature zones
SUBSTRATE SUPPORT WITH ELECTROSTATIC CHUCK HAVING DUAL TEMPERATURE ZONES
The present invention relates to a substrate support for holding a substrate in a substrate processing chamber.
In substrate processing such as semiconductors and displays, electrostatic chucks are used to hold the substrate in the substrate processing chamber. A typical electrostatic chuck includes electrodes covered by an insulator such as ceramic or polymer. When the electrode is charged, the electrostatic charge in the electrode and the substrate is held on the substrate in the chuck. Generally, the temperature of the substrate is controlled by providing a gas on the back of the substrate to enhance the heat exchange rate of the entire micro-gap between the substrate and the surface of the chuck. The electrostatic chuck may be supported by a base, wherein the base has a channel for flowing a fluid therein to cool or heat the chuck. After the substrate is firmly held on the chuck, the process gas is introduced into the chamber and a plasma is formed to treat the substrate by CVD, PVD, etching, injection, oxidation, nitridation, or other processes.
During processing, the surface often experiences non-uniform processing rates or other processing features across the surface of the substrate. For example, this non-uniform treatment can produce concentric treatment bands in the radial direction across the surface of the substrate. The distribution of gaseous or plasma species in the chamber may also cause non-uniform processing characteristics. For example, the distribution of gas in the entire chamber may change with the position of the inlet and outlet in the chamber relative to the surface of the substrate. In addition, the mass transfer mechanism can also change the diffusion and arrival rate of gaseous substances in different areas of the entire substrate surface. Non-uniform heat loads in the processing chamber may also cause non-uniform processing rates. For example, the energy coupled from the plasma sheath to the substrate or the radiant heat reflected from the chamber wall may cause different heat loads. It is undesirable for processing deviations to occur on the entire substrate, as this will result in active and passive electronic devices manufactured in different areas of the substrate (for example, peripheral and central substrate areas) with different characteristics.
Therefore, during substrate processing, it is desirable to reduce the processing rate and other processing characteristics of the entire substrate surface. At the same time, people also want to control the temperature of different areas of the entire processed surface of the substrate. It is also desirable to control the temperature distribution of the entire substrate during processing.
A clamping ring for a processing chamber, the processing chamber comprising a base having a top surface and an edge ring, the top surface having a chuck receiving part for supporting an electrostatic chuck and a peripheral part, the electrostatic chuck The disc includes a ceramic disc, the ceramic disc has a peripheral ledge including first and second steps, the edge ring is disposed on the second step of the ceramic disc, and the clamping ring includes: a) an annular body , Having a top surface for supporting the edge ring and a bottom surface having a plurality of holes, the plurality of holes of the bottom surface are adapted to be fixed to the peripheral portion of the top surface of the base; b) the upper lip, facing The inner radially extending to be placed on the first step of the peripheral ledge of the ceramic disc; c) the radially outer side surface; and d) the foot, which extends downwardly from the radially outer side surface to be disposed on The peripheral part of the top surface of the base.
An edge ring for a processing chamber, the processing chamber having: i) a base; ii) an electrostatic chuck on the base, the electrostatic chuck including a ceramic disc, the ceramic disc including a stepped periphery Ledge; iii) a clamping ring having an upper lip, an outer side surface and a top surface, the upper lip extending radially inwardly to be placed on the step of the peripheral ledge of the ceramic disc, The edge ring includes: a) a belt including a foot provided on the top surface of the clamping ring; b) an annular outer wall surrounding the outer side surface of the clamping ring; and c) an inner flange , Covering the steps of the peripheral ledge of the ceramic disc.
An edge ring for a processing chamber, the processing chamber having: i) a base; ii) an electrostatic chuck on the base, the electrostatic chuck including a ceramic disc, the ceramic disc including a stepped periphery Ledge; iii) a clamping ring having a top surface, an upper lip, and an outer side surface, the upper lip extending radially inwardly from the top surface to be placed on the peripheral ledge of the ceramic disc On the step, the edge ring includes: a) a wedge-shaped belt, including an inclined top surface and a lower surface covering the top surface of the clamping ring; b) an inner flange, from the wedge-shaped belt inward Extending radially, the inner flange has a foot that can be placed on a step of the peripheral ledge of the ceramic disc; and c) an outer flange extending radially outward from the wedge-shaped band, so The outer flange has a radially inward facing surface covering the outer side surface of the clamping ring.
An electrostatic chuck for accommodating a substrate in a processing chamber, the electrostatic chuck comprising: a) a ceramic disc, comprising: i) a substrate accommodating surface, a protruding platform having a plurality of mesa, the protruding platform Separated by a groove pattern; ii) a plurality of heat transfer gas ducts, which pass through the ceramic disc and terminate at the peripheral port and the central port of the groove pattern on the substrate containing surface, the gas ducts can be the Different areas of the substrate containing surface provide heat transfer gas; and iii) a peripheral ledge having a first step and a second step, the second step being radially outward from the first step and lower than the first step; b) Electrodes embedded in the ceramic disc to generate electrostatic force to maintain the substrate provided on the substrate containing surface.
As shown in Figure 1, one embodiment of the electrostatic chuck 20 includes a ceramic disc 24 having a ceramic body, wherein the ceramic body has a substrate containing surface 26, which is the top surface of the disc 24 And used as a receiving substrate 25. The ceramic disc 24 also has a back surface 28 opposite to the substrate receiving surface 26. The ceramic disc 24 also has a peripheral ledge 29 including a first step 31 and a second step 33, the second step 33 is radially outward from the first step 31 and is lower than the first step 31. The ceramic disc 24 contains at least one of the following substances: aluminum oxide, aluminum nitride, silicon oxide, silicon carbide, silicon nitride, titanium oxide, zirconium oxide, and mixtures thereof. The ceramic disc 24 may be an integral single ceramic made by hot pressing and sintering ceramic powder, and then processing the sintered form to form the final shape of the disc 24.
In one solution, as shown in FIGS. 1 and 2, the back surface 28 of the ceramic disc 24 includes a plurality of spaced mesa 30, wherein the mesa 30 is a columnar protrusion separated from each other by a plurality of gaps 32. In use, the gap 32 is filled with a gas such as air to adjust the heat transfer rate from the back surface 28 to other lower surfaces of other structures. In one embodiment, the mesa 30 includes a columnar protrusion, which may even be shaped as a column, which extends upward from the surface 28, and the column has a rectangular or circular cross-sectional shape. The height of the mesa 30 may be from about 10 to about 50 microns, and the width (or diameter) of the mesa 30 may be from about 500 to about 5000 microns. However, the table top 30 may also have other shapes and sizes, for example, conical or rectangular blocks, or even flanges of different sizes. In one solution, the back surface 28 is bombarded to form the mesa 30 with beads having a suitably small bead size (for example, several tens of micrometers) to etch away the material of the back surface 28 to form the molded mesa 30 with an interference gap 32.
The ceramic disc 24 also includes an electrode 36 embedded therein to generate an electrostatic force for holding the substrate placed on the substrate receiving surface 26. The electrode 36 is a conductor such as metal, and is shaped as a single or double electrode. The single electrode includes a single conductor and has a single electrical connection to an external power source, and cooperates with a plasma-covered discharge substance formed in the chamber to bias the entire substrate contained on the chuck 20. The double electrode has two or more conductors, each of which is biased with respect to the other conductors to generate electrostatic force for maintaining the substrate. The electrode 36 may be shaped as a metal wire mesh or a metal disk with a suitable opening area. For example, the electrode 36 including a single electrode may be a single continuous wire mesh embedded in a ceramic disc as shown. One embodiment of the electrode 36 including double electrodes may be a pair of embedded C-shaped discs with C-shaped straight walls facing each other. The electrode 36 may be composed of aluminum, copper, iron, molybdenum, titanium, tungsten, or alloys thereof. One version of the electrode 36 includes a molybdenum mesh. The electrode 36 is connected to a terminal 58, where the terminal 58 supplies electric power from an external power source to the electrode 36.
The ceramic disc 24 also has a plurality of heat transfer gas conduits 38a, 38b, which pass through the ceramic body and terminate in the ports 40a, 40b of the substrate receiving surface 26 to provide heat transfer gas to the substrate receiving surface 26. A heat transfer gas such as helium is supplied to the lower part of the back surface 34 of the substrate to conduct heat away from the covering substrate 25 and reach the receiving surface 26 of the ceramic disc 24. For example, the first gas conduit 38a may be positioned to supply heat transfer gas to the central heating zone 42a of the substrate containing surface 26, and the second gas conduit 38b may be positioned to supply heat transfer gas to the peripheral heating zone 42b of the substrate containing surface 26 . The central heating zone 42a and the peripheral heating zone 42b of the substrate containing surface 26 of the ceramic disc 24 allow the corresponding parts of the substrate processing surface 44 to maintain different temperatures, for example, the upper central heating zone 42a and the peripheral heating zone of the substrate 25 42b.
Using a plurality of heating coils 50, 52, such as the first heating coil 50 and the second heating coil 52 embedded in the ceramic disc 24, can further control the central heating zone 42a and the central heating zone 42a of the substrate receiving surface 26 of the ceramic disc 24 The temperature at the peripheral heating zone 42b. For example, the heating coils 50, 52 may be radially spaced apart and arranged in concentric circles with respect to each other, even side by side in the same plane. In one solution, the first heating coil 50 is located at the central portion 54 a of the ceramic disc 24, and the second heating coil 52 is located at the peripheral portion 54 b of the ceramic disc 24. The first and second heating coils 50, 52 allow independent control of the temperature of the central portion 54a and the peripheral portion 54b of the ceramic disc 24, and further cooperate with the table 30 on the back 28 of the ceramic disc 24 to allow adjustments placed on the ceramic The temperature distribution of the base material 25 on the receiving surface 26 of the disk 24.
Each heating coil 50, 52 has the ability to independently control the temperature of the heating zone 42a, 42b to achieve different processing rates or characteristics in the radial direction of the processing surface 44 of the entire substrate 25. Similarly, different temperatures can be maintained in the two heating zones 42a, b to affect the temperature of the upper center and peripheral regions 46a, b of the substrate 25, thereby counteracting any altered gas species distribution that occurs during the processing of the substrate 25 Or heat load. For example, when the gaseous substance at the peripheral portion 46b of the processing surface 44 of the substrate 25 is not active in the gaseous substance at the central portion 46a, the temperature of the peripheral heating zone 42b is increased to be higher than the temperature of the central heating zone 42a in order to The entire processing surface 44 of the material 25 provides a more consistent processing rate or processing characteristics.
In one solution, both the first and second heating coils 50, 52 comprise circular rings of resistance heating elements, where the resistance heating elements are arranged side by side, and may even be substantially on the same plane. For example, both the heating coils 50 and 52 may be continuous concentric rings spiraling radially inwardly in the main body of the ceramic disc 24. The heating coils 50 and 52 may also be spiral coils circling around an axis passing through the center of the coil, for example, similar to an electric lamp filament, which is arranged in concentric circles in the entire body of the ceramic disc 24. The resistive heating element can be composed of different resistive materials, such as, for example, molybdenum. In one aspect, the heating coils 50, 52 each include a resistance high enough to maintain the substrate receiving surface 26 of the ceramic disc 24 at a temperature of from about 80 to about 250°C. In one approach, the resistance of the coil is from about 4 to about 12 ohms. In one example, the first heating coil 50 has a resistance of 6.5 ohms and the second heating coil 52 has a resistance of 8.5 ohms. The heating coils 50, 52 are provided with energy via independent terminals 58a-d extending through the ceramic disc 24.
In combination with the heating coils 50 and 52, the pressure of the heat transfer gas can also be controlled in the two zones 42a and b to make the substrate processing rate on the entire substrate 25 more uniform. For example, both zones 42a, b may be configured to maintain heat transfer gas at different equilibrium pressures to provide different heat transfer rates from the back 34 of the substrate 25. This is accomplished by supplying the heat transfer gas at two different pressures through the ducts 38a, 38b, respectively, so as to be released at two different locations on the substrate containing surface 26.
The electrostatic chuck 20 may also include optical temperature sensors 60a, b that pass through holes 62a, b in the ceramic disc 24 to contact and accurately measure the temperature of the upper center and peripheral portions 46a, b of the substrate 25. The first sensor 60a is located at the central heating zone 42a of the ceramic disc 24 to read the temperature of the central portion 46a of the substrate 25, and the second sensor 60b is located at the peripheral heating zone 42b of the ceramic disc 24 to read accordingly The temperature of the peripheral portion 46b of the base material 25 is taken. The optical temperature sensors 60a, b are located in the chuck 20, so that the sensor tips 64a, b and the substrate receiving surface 26 of the ceramic disc 24 are located in the same plane, so that the sensor tips 64a, b can be kept in contact with each other. On the back side 34 of the substrate 25 on the chuck 20. The arms 66a, b of the sensors 60a, b extend vertically through the main body of the ceramic disc 24.
As shown in Figure 3, in one solution, each optical temperature sensor 60 includes a thermal sensor probe 68 that includes a shape having a side wall 72 and a dome-shaped top 74 serving as a tip. Close the copper cap 70 of the cylinder. The copper cap 70 may be composed of an oxygen-free copper material. The phosphor plug 76 is embedded inside and directly contacts the top 74 of the copper cap 70. The phosphor plug 76 embedded in the copper cap 70 provides a faster and more sensitive thermal response to the thermal sensing probe 68. The tip 64 of the copper cap 76 is a dome-shaped top 74 to allow repeated contact with different substrates 25 without eroding or damaging the substrate. The copper cap 70 has a groove 78 for accommodating the epoxy resin 79 to stick the cap 70 in the sensor probe 68.
The phosphor plug 76 converts heat into photons that pass through the optical fiber bundle 80 in the form of infrared radiation. The optical fiber bundle 80 may be composed of borosilicate glass fibers. The optical fiber bundle 80 is surrounded by the sleeve 82, and in turn, the sleeve 82 is partially surrounded by a temperature insulating sleeve 84, which serves as thermal insulation between the temperature sensor and the base supporting the ceramic disc. The sleeve 82 may be a glass tube to provide better thermal insulation from the surrounding construction, but may also be made of metal such as copper. The temperature insulating sleeve 84 may be composed of PEEK, polyetheretherketone, and may also be Teflon manufactured by Dupont de Nemours of Delaware.<img file="TWI463588B_D0001.tif" he="36" id="i0001" img-content="character" img-format="tif" inline="no" orientation="portrait" wi="36" />(Polytetrafluoroethylene).
As shown in FIGS. 4A, 4B and 5, the substrate support 90 includes an electrostatic chuck 20 fixed to a base 91, wherein the base 91 is used to support and fix the chuck 20. The base 91 includes a metal main body 92 having a top surface 94, wherein the top surface 94 has a chuck receiving portion 96 and a peripheral portion 98. The chuck accommodating portion 96 of the top surface 94 is adapted to accommodate the back 28 of the ceramic disc 24 of the electrostatic chuck 20. The peripheral portion 98 of the base 91 extends radially outward beyond the ceramic disc 24. The peripheral portion 98 of the base 91 may be adapted to receive a clamping ring 100, which may be fixed to the top surface of the peripheral portion of the base. The metal body 92 of the base 91 has a plurality of passages 102 from the bottom surface 104 of the base to the top surface 94 of the base 91, for example, for accommodating the terminals 58a-b or for feeding gas to the gas ducts 38a, b of the ceramic disc 24 .
The chuck receiving portion 96 of the top surface 94 of the base 91 includes one or more grooves 106 a, b to hold and flow air over the entire back of the ceramic disc 20. In one embodiment, the chuck receiving portion 96 includes a peripheral groove 106a that cooperates with a plurality of tables 30 on the back 28 of the ceramic disc 24 to control heat from the peripheral portion 54b of the ceramic disc 24 Transmission rate. In another embodiment, the central groove 106b is used in conjunction with the peripheral groove 106a to adjust the heat transfer from the central portion 54a of the ceramic disc 24.
The grooves 106 a, b in the top surface 94 of the base 91 cooperate with the mesa 30 on the back 28 of the ceramic disc 24 to further adjust the temperature of the entire substrate processing surface 44. For example, the shape, size, and spacing of the mesa 30 control the total amount of contact surface of the mesa 30 in contact with the top surface 94 of the base 91, thereby controlling the total heat conduction area of the interface. For example, the shape and size of the countertop 30 can be designed so that the back 28 of the ceramic disc 24 actually only has 50% or less of the total area, for example, 30% is in contact with the top surface 94 of the base 91. The smaller the contact area, the higher the temperature of the entire substrate processing surface 44. Likewise, air is provided between the table top 30 and the entire back surface 28 for further temperature adjustment.
The mesa 30 on the back surface 28 of the ceramic disc 24 may be distributed on the entire back surface 28 in a uniform or non-uniform pattern. In a uniform pattern, the distance between the mesas 30 as shown by the gaps 32 is substantially the same, while the gap distances spaced non-uniformly vary across the surface 28. It is also possible to vary the shape and size of the mesa 30 over the entire surface 28. For example, a non-uniform mesa 30 pattern can be provided to provide different amounts of contact surface in different areas on the entire back surface 28 of the ceramic disc 24 to control the heat from the center and peripheral portions 54a, b of the disc 24, respectively. The transfer rate, and therefore the temperature at the upper center and peripheral portions 46a, b of the base material 25 is controlled.
The base 91 also includes a plurality of channels 110 for circulating fluids such as water. The base 91 with the circulating cooling fluid serves as a heat exchanger to control the temperature of the chuck 20 so as to reach a desired temperature on the entire processing surface 44 of the substrate 25. The fluid passing through the channel 110 may be heated or cooled to increase or decrease the temperature of the chuck 20 and the temperature of the substrate 25 held on the chuck 20. In one aspect, the shape and size of the channel 110 are designed to allow fluid to flow therethrough so as to maintain the temperature of the base 91 from about 0 to 120°C.
The base 91 also includes an electrical connector assembly for conducting power to the electrode 36 of the electrostatic chuck 20. The electrical connector assembly includes a ceramic insulating sleeve 124. The ceramic insulating sleeve 124 may be, for example, alumina. A plurality of terminals 58 are embedded in the ceramic insulating sleeve 124. The terminals 58, 58a-b provide electric power to the electrodes 36 of the electrostatic chuck 20 and the heating coils 50, 52. For example, the terminal 58 may include a copper post.
As shown in Figure 7, the contact strip 140 is arranged to surround the terminals 58, 58a-d of the electrical connector assembly. Each contact strip 140 includes metal, such as a copper alloy. The structural main body of the contact strip 140 includes a housing 142 adapted to be installed around the terminal 58. The shape of the housing 142 depends on the shape of the column 58 and, preferably, should imitate the shape of the column 58. The part or strip 146 of the housing 142 includes a belt 144 having a plurality of slits 148 and a plurality of heat exchange skylights 150, and the slits 148 are designed in a certain pattern so that the skylights 150 are alternately arranged with the slits 148. In one embodiment, the plurality of slits 148 and skylights 150 extend from the top edge 152 of the strip 146 to the bottom edge 154 of the strip 146 or part of the housing 142. The plurality of slits 148 and the skylight 150 form a spring-like feature that reduces the stiffness of the housing 142 and allows it to conform to the shape of the outer surface of the terminal 58 or terminal. The structure loop of the multiple slits 148 on the strip 146 of the housing 142 makes the terminal 58 contact the main area of the inner exposed surface 143 of the housing 142 through other spring-like features. This enables optimal heat transfer between the contact belt 140 and the terminal.
As shown in FIG. 5A, the ring assembly 170 can also be configured to reduce the formation of process deposits on the peripheral area of the substrate support 90 including the electrostatic chuck supported by the base 91, and to protect it from erosion. In the embodiment of Figure 5B, the ring assembly 170 includes a clamping ring 100, which includes a ring-shaped body 171 having a hole 175, which is fixed to the periphery of the top surface 94 of the base 91 by fixing means such as screws or bolts 169 Part 98 on. The clamp ring 100 has an upper lip 172 extending radially inward from the top surface 174 and an outer side surface 176 that forms a radially outward perimeter of the clamp ring 100. The lip 172 has a design size to be installed and set on the bottom surface 173 of the first step 31 of the peripheral ledge 29 of the ceramic disc 24. In one aspect, the lip 172 has a bottom surface 173 adapted to form an air seal between the ceramic disc 24 and the base 91. For example, the lower surface 173 may contain a polymer, such as a polymer layer, for example including polyimide, to form a good seal. The clamping ring 100 is made of a material resistant to plasma erosion, for example, a metal material such as stainless steel, titanium, or aluminum, or a ceramic material such as alumina.
As shown in FIG. 5B, the ring assembly further includes an edge ring 180 that includes a strap 182 having a foot 184 disposed on the top surface 174 of the clamping ring 100. The edge ring 180 also has an annular outer wall 186 surrounding the outer side surface 176 of the clamping ring 100 to reduce or even completely prevent the deposition of sputtered deposits on the clamping ring 100, which would otherwise be exposed to the process environment. The edge ring 180 also includes a flange 190 covering the second step 33 of the peripheral ledge 29 of the ceramic disc 24. The flange 190 includes a protrusion 194 that terminates under the cantilever edge 196 of the substrate 25. The flange 190 defines the inner perimeter of the edge ring 180 that surrounds the periphery of the substrate 25 to protect the area of the ceramic disc 24 that is not covered by the substrate 25 during processing. The clamping ring 100 and the edge ring 180 of the ring assembly 170 cooperate to reduce the formation of process deposits on the electrostatic chuck 20 supported on the base 91 during the processing of the substrate 25 and to protect it from erosion. The edge ring 180 also protects the exposed side surface of the substrate support 90 to reduce erosion during the manufacturing process. The ring assembly 170 can be easily removed to clean deposits on the exposed surfaces of the clamping ring 100 and the edge ring 180, so that the entire substrate support 90 to be cleaned does not have to be removed. The edge ring 180 may be made of ceramics such as, for example, quartz.
FIG. 5C shows another solution of the ring assembly 170 that reduces the formation of process deposits and protects the substrate support 90 including the electrostatic chuck 20 and the base 91 from corrosion. In this solution, the clamping ring 100 includes an annular body 171 having a top surface 174 for supporting the edge ring 180 and a plurality of holes 175 having a peripheral portion 98 adapted to be fixed to the top surface 94 of the base 91 The bottom surface 192. The ring body 171 is fixed to the peripheral portion 98 of the top surface 94 of the base 91 by screws or bolts 169 matching the holes 175. The clamping ring 100 also has an upper lip 172 extending radially inward to be disposed on the first step 31 of the peripheral ledge 29 of the ceramic disc 24. The upper lip 172 of the clamping ring 100 may also have a downwardly extending protrusion 192 provided on the first step 31 of the peripheral ledge 29 of the ceramic disc 24 to minimize the contact area, and a bottom radially outward. A downwardly extending protrusion 193 extends from the groove 194. The upper lip 172 of the clamping ring 100 includes a bottom surface 173 provided on the first step 31 of the peripheral ledge 29 of the ceramic disc 24. In one aspect, the bottom surface 173 contains a polymer, such as a polymer layer, for example, a polymer layer. Imine. The bottom surface 173 may also be the surface of the protrusion 193, for example, the protrusion 193 may be made of a bottom surface material. The outer portion 194 of the clamping ring 100 includes a radially outer surface 176 that is flat and terminates at the outer diameter 196 of the base 91. The clamping ring 100 also has a foot 197 extending downward from the radially outer surface 176 to be disposed on the peripheral portion 98 of the top surface 94 of the base 91. The clamping ring 100 may be made of, for example, a metal material such as aluminum, titanium, or stainless steel, or a ceramic material such as alumina.
The solution of the edge ring 180 shown in FIG. 5C includes a wedge-shaped belt 182 having an inclined upper surface 183. The lower surface 185 of the belt 182 covers the upper surface 174 of the clamping ring 100. The edge ring 180 also has an inner flange 187 extending radially inwardly from the wedge belt 182. The inner flange 187 includes a bottom surface 188 that rises upward with respect to the lower surface 185 of the wedge belt 182. The inner flange 187 also has a foot 189 that can be provided on the first step 33 of the peripheral edge 29 of the ceramic disc 24. The inner flange 187 further includes an upper surface 191 having a radially inward perimeter of an upper step 232 and a lower step 234. The upper step 232 and the lower step 234 gradually decrease in height along the radially inward direction. The inner flange 187 also has an arcuate edge 236 that engages with the inclined upper surface 183 of the wedge belt 182. The outer flange 238 of the edge ring 180 extends radially outward from the wedge belt 182. The outer flange 238 includes a radially inward facing surface 240 covering the outer surface 176 of the clamping ring 100. The outer flange 238 further has a bottom wall 242 extending downward with respect to the lower surface 185 of the wedge belt 182. The outer flange 238 also has a sloped perimeter edge 244 that reduces erosion in this area. The edge ring 180 may also be made of ceramics such as quartz.
As shown in FIGS. 4C and 4C1, another embodiment of the electrostatic chuck 20 includes a ceramic disc 24 having a substrate containing surface 26. The substrate receiving surface 26 includes a groove pattern 250 having a radial arm 252 and an annular arm 254 interconnected with each other. Between these grooves is a raised platform 256 with a separate mesa 258. In the solution shown, the protruding platform 256 has a lead-shaped side edge 257, which is generally a triangle or a quadrilateral. However, the protruding platforms 256 may also have other shapes, and may be distributed asymmetrically on the entire substrate receiving surface 26. Each raised platform 256 is defined by a plurality of mesa 258 from about 10 to about 1000. In one aspect, the mesa 258 is a convex cylindrical protrusion, for example, forming a cylinder or a lead-shaped protrusion. For example, the mesa 258 may be a cylinder having an average diameter of about 5 to about 50 microns and a height of about 0.5 millimeters to about 5 millimeters. The mesa 258 is set to a shape, size, and spatial distribution on the entire surface 26 to control the contact area with the substrate overlying it to adjust the heat transfer speed from the substrate to different areas of the ceramic disc 24.
A plurality of heat transfer gas ducts 38a, b (see FIG. 1) pass through the ceramic disc 24 and in one or more central ports 40a and peripheral ports 40b in the groove pattern 250 on the substrate receiving surface 26 termination. The central port 40a and the peripheral port 40b can provide heat transfer gas to the central area 42a and the peripheral area 42b. The peripheral port 40b terminates at an arcuate cut-out 259 surrounded by the radially inner gas sealing edge 260 and the radially outer gas sealing edge 262 to define the peripheral area 42b. The central port 40a may terminate at the intersection of the central arm 252 and the radial arm 254 of the groove 250 to define an area relative to the central area 42a. The center and peripheral heating regions 42a, b of the substrate receiving surface 26 of the ceramic disc 24 allow the corresponding overlying center and peripheral portions 46a, b of the substrate 25 to be maintained at different temperatures, respectively (Figure 8).
In this solution, the ceramic disc 24 has a back surface 28 (not shown) opposite to the substrate receiving surface 26, which may be flat and non-table, or it may have a previously described table. The ceramic disc 24 also has a peripheral ledge 29 including a first step 31 and a second step 33, the second step 33 is radially outward from the first step 31 and is lower than the first step 31. The ceramic disc 24 is made of aluminum oxide, aluminum nitride, silicon oxide, silicon carbide, silicon nitride, titanium oxide, zirconium oxide, or a mixture thereof, and is formed by hot pressing and sintering ceramic powder and processing the sintered ceramic shape to form a circle The final shape of the disc 24. The groove 250, the mesa 258, the gas conduits 38a, b and the ports 40a, b and other structures can be processed into ceramic structures.
In the solution shown in Figure 4D, the base 91 includes a metal body 92 having a top surface 94 (not shown), wherein the top surface 94 has a chuck receiving portion 96 and a periphery extending radially outward from the ceramic disc 24 Part 98. In this solution, the base 91 includes a single channel 110 for circulating a liquid such as water to serve as a heat exchanger. The fluid circulation channel 110 includes a spiral channel with a plurality of arc-shaped raised areas 260a-c that are unevenly distributed or asymmetrically distributed on the entire base 91. The larger length of the channel 110 is set to pass or penetrate these areas of the base 91 that become hot in use, and the smaller length is used in the cooler area of the base 91. As a result, the asymmetric fluid circulation channel 110 controls the fluid flow to maintain a uniform temperature on the entire base 91.
The substrate supporting member 90 including the electrostatic chuck 20 and the base 91 may be used in the substrate processing apparatus 200, and an exemplary method thereof is shown in FIG. 8. The device 200 includes a chamber 201 having a surrounding wall 202, and in one aspect, the chamber 201 is a DPS Advantage chamber. The gas source 204 provides a process gas to the chamber through the gas hole 203. The process gas is a gas capable of processing the substrate 25, such as an etching gas, for example, a halogen-containing gas such as chlorine or hydrogen chloride; or a deposition gas such as CVD or PVD gas, , For example, a gas used to deposit dielectric or semiconductor materials. The gas exciter 208 is configured to apply capacitive or inductively coupled RF energy to the process gas, or to transmit microwave energy to the process gas (not shown), so as to form a high-energy gas to treat the substrate 25. For example, through the electrode power supply 230 and the electrical ground wall 202 of the chamber 201, the capacitive energy can be applied to the process gas by applying an RF voltage to the electrode 36 of the electrostatic chuck 24. The electrode power supply 230 also provides a DC attraction voltage to charge the electrode 36 of the chuck 24, thereby holding the substrate 25 statically. Via the induction coil 205, energy can also be applied to the process gas by coupling inductive energy to the process gas. Optionally, the process gas is supplied with energy through the coupled microwave energy applied to the process gas via a microwave conduit in a distal chamber (not shown). The substrate 25 is held on the receiving surface 26 of the electrostatic chuck 20 in the chamber 201, and the electrostatic chuck 20 is located on the base 91.
The chamber is controlled by a controller 212, where the controller 212 usually includes a computer 308 with a central processing unit (CPU) connected to memory and peripheral computer components, such as a commercial Pentium processor manufactured by Intel Corporation from Santa Clara, California Device. The memory may include a removable storage device such as a CD or a floppy disk, a non-removable storage device such as a hard disk, and random access memory (RAM). The controller 212 may also include a hardware interface, which includes an analog or digital input and output board and a motor controller board. The operator can communicate with the chamber controller 212 via a display or a data logging device. In order to select a specific screen or function, the operator uses a data logging device such as a keyboard or a light pen to input the selection.
The controller 212 also includes a computer readable program stored in the memory, including processing codes that can control and monitor the processes executed in the chamber 212. A computer readable program can be written in any traditional computer readable programming language. Use a traditional text editor to input the appropriate programming code into a single or multiple files, and store or record in the computer-usable media in the memory. If the input coded text is a high-level language, edit the code, and then the generated editor code is connected with the target code of the pre-edited library application. In order to execute the target code for connection and editing, the user calls the target code so that the CPU reads and executes the code to complete the task identified in the program. The program may include a set of temperature control instructions to control the temperature at different areas of the substrate 25, for example, by independently applying different electric powers to the first and second heating coils 50, 52 of the ceramic disc 24 of the chuck 20 to adjust the passage of the tube The flow of the heat transfer gas at 38a, b controls the flow rate of the fluid passing through the channel 110 of the base 91. The process feedback control command set can be used as a feedback control loop between the temperature monitoring command sets to adjust the power applied to the chamber elements such as the heating coils 50, 52, the heat transfer gas flow through the ducts 38a, b, and the base 91 The fluid flows in the channel 110, and the temperature monitoring instruction set receives temperature signals from the optical temperature sensors 60a, b. When described as a separate instruction set used to make a series of tasks, each instruction set can be combined or interleaved with other instruction sets; therefore, the chamber controller 212 and the computer-readable program described here should not be used. Limited to the specific scheme of the functional program described here.
Although the present invention has been described with reference to some preferred solutions, other solutions are also possible. For example, the substrate support can be used in other chambers and other processes in addition to what is described here. Therefore, the scope of the attached patent application should not be limited to the description of the preferred solutions included herein.
<p>20. . . Electrostatic chuck</p><p>twenty four. . . disc</p><p>25. . . Substrate</p><p>26. . . Substrate holding surface</p><p>28. . . back</p><p>29. . . Peripheral wall shelf</p><p>30. . . mesa</p><p>31. . . First step</p><p>32. . . gap</p><p>33. . . Second step</p><p>34. . . Back of the substrate</p><p>36. . . electrode</p><p>38a. . . Heat transfer gas conduit</p><p>38b. . . Heat transfer gas conduit</p><p>40a. . . port</p><p>40b. . . port</p><p>42a. . . Central heating zone</p><p>42b. . . Surrounding heating zone</p><p>44. . . Substrate treatment surface</p><p>46a. . . Central region</p><p>46b. . . Surrounding area</p><p>50. . . Heating coil</p><p>52. . . Heating coil</p><p>54a. . . Central part</p><p>54b. . . Peripheral part</p><p>58. . . Terminal</p><p>58a. . . Independent terminal</p><p>58b. . . Independent terminal</p><p>58c. . . Independent terminal</p><p>58d. . . Independent terminal</p><p>60. . . Optical temperature sensor</p><p>60a. . . Optical temperature sensor</p><p>60b. . . Optical temperature sensor</p><p>62a. . . hole</p><p>62b. . . hole</p><p>64. . . Tip</p><p>64a. . . Tip</p><p>64b. . . Tip</p><p>66a. . . arm</p><p>66b. . . arm</p><p>68. . . Thermal sensor probe</p><p>70. . . Copper cap</p><p>72. . . Sidewall</p><p>74. . . top</p><p>76. . . Phosphorus</p><p>78. . . Groove</p><p>79. . . Epoxy resin</p><p>80. . . Optical fiber bundle</p><p>82. . . casing</p><p>84. . . Temperature insulation cover</p><p>90. . . Substrate support</p><p>91. . . Base</p><p>92. . . Metal body</p><p>94. . . Top surface</p><p>96. . . Chuck receiving part</p><p>98. . . Peripheral part</p><p>100. . . Clamping ring</p><p>102. . . path</p><p>104. . . Bottom surface</p><p>106a. . . Groove</p><p>106b. . . Groove</p><p>110. . . aisle</p><p>124. . . Ceramic insulating sleeve</p><p>140. . . Contact zone</p><p>142. . . shell</p><p>143. . . Inner exposed surface</p><p>144. . . bring</p><p>146. . . strip</p><p>148. . . Seam</p><p>150. . . Skylight</p><p>152. . . Top edge</p><p>154. . . Bottom edge</p><p>169. . . Fixtures</p><p>170. . . Ring assembly</p><p>171. . . Ring body</p><p>172. . . Upper lip</p><p>173. . . Bottom surface</p><p>174. . . Top surface</p><p>175. . . hole</p><p>176. . . External side surface</p><p>180. . . Edge ring</p><p>182. . . bring</p><p>183. . . Upper surface</p><p>184. . . Foot</p><p>185. . . lower surface</p><p>186. . . Ring-shaped outer wall</p><p>187. . . Inner flange</p><p>188. . . Bottom surface</p><p>189. . . Foot</p><p>190. . . Flange</p><p>191. . . Upper surface</p><p>192. . . Bottom surface</p><p>193. . . Raised</p><p>194. . . obstructive</p><p>196. . . Cantilever edge</p><p>197. . . Foot</p><p>200. . . Substrate processing device</p><p>201. . . Chamber</p><p>202. . . Surrounding wall</p><p>203. . . Stoma</p><p>204. . . Gas source</p><p>205. . . Induction coil</p><p>212. . . Controller</p><p>230. . . Electrode power supply</p><p>232. . . Step up</p><p>234. . . Step down</p><p>236. . . Curved edge</p><p>238. . . Outer flange</p><p>240. . . Radial inward facing</p><p>242. . . Bottom wall</p><p>244. . . Perimeter edge</p><p>250. . . Groove pattern</p><p>252. . . Radial arm</p><p>254. . . Circular arm</p><p>256. . . Protruding platform</p><p>257. . . Arcuate side edge</p><p>258. . . mesa</p><p>259. . . Bow cut</p><p>260. . . Radial inner gas sealing edge</p><p>260a. . . Curved raised area</p><p>260b. . . Curved raised area</p><p>260c. . . Curved raised area</p><p>262. . . Radial outer gas sealing edge</p>
The features, solutions, and advantages of the present invention can be made more apparent through the following description, the scope of the patent application, and the drawings showing the embodiments of the present invention. However, it should be understood that the various features used in the present invention should not be limited to specific drawings, and the present invention includes any combination of these features, wherein: Figure 1 is a schematic cross-sectional side view of an embodiment of an electrostatic chuck; Figure 2 is a schematic bottom view of the chuck of Figure 1; Figure 3 is a schematic side view of an optical temperature sensor; Figures 4A and 4B are an embodiment of a substrate support including a base and an electrostatic chuck The top view (Figure 4A) and bottom view (Figure 4B) of the perspective schematic view; Figure 4C is a perspective schematic plan view of another embodiment of a substrate support including a base and an electrostatic chuck; Figure 4C1 is a perspective view of another embodiment Figure 4C1 is a detailed perspective view of the circular cross-section, showing a peripheral area with a peripheral portion and surrounding the gas sealing arm; Figure 4D is a bottom plan view of the base of the support of Figure 4C; Figure 5A is in Figure 4A And a schematic cross-sectional side view of the embodiment of the ring assembly including the edge ring over the clamping ring on the substrate support of Fig. 4B; Fig. 5B is an enlarged view of the ring assembly of Fig. 5A; Fig. 5C is in A schematic cross-sectional side view of another embodiment of the ring assembly on the substrate support including the edge ring of the clamping ring; Figure 6 is a schematic cross-sectional side view of the embodiment of the electrical connector assembly of the base; Figure is a schematic cross-sectional side view of an embodiment of the contact belt; and Figure 8 is a schematic cross-sectional side view of an embodiment of a substrate processing chamber with a substrate support.
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Every citation, both ways
| Document | Relation | Office | Cited during |
|---|---|---|---|
| TWI761443B | Cited by | Taiwan Province of China | Examiner |
| US2004115947A1 | Cites | United States of America | Examiner |
| TW200509291A | Cites | Taiwan Province of China | Examiner |
| JP2005191561A | Cites | Japan | Examiner |
| US2005207088A1 | Cites | United States of America | Examiner |
| US2006023395A1 | Cites | United States of America | Examiner |
| CN2585414Y | Cites | China | Examiner |
| US6481886B1 | Cites | United States of America | Examiner |
| US6951587B1 | Cites | United States of America | Examiner |
| TW200509291 | Cites | Taiwan Province of China | – |
| JP2005191561A | Cites | Japan | – |
| US20040115947A1 | Cites | United States of America | – |
| US20050207088A1 | Cites | United States of America | – |
| US20060023395A1 | Cites | United States of America | – |
23 members in 5 offices
Priority claims2
| Document | Office | Kind | Date |
|---|---|---|---|
| 60796013 | United States of America | – | |
| 79601306 | United States of America | P |
Members23
| Document | Office | Kind | |
|---|---|---|---|
| KR20070105828A | Republic of Korea | A | |
| KR20070105929A | Republic of Korea | A | |
| US2007258186A1 | United States of America | A1 | |
| JP2007300057A | Japan | A | |
| JP2007300119A | Japan | A | |
| CN101093811A | China | A | |
| CN101093812A | China | A | |
| TW200807606A | Taiwan Province of China | A | |
| TW200809999A | Taiwan Province of China | A | |
| CN101887865A | China | A | |
| TWI357629B | Taiwan Province of China | B | |
| CN101093811B | China | B | |
| CN102593031A | China | A | |
| US8226769B2 | United States of America | B2 | |
| JP5069452B2 | Japan | B2 | |
| US2012285619A1 | United States of America | A1 | |
| JP5183092B2 | Japan | B2 | |
| CN101887865B | China | B | |
| US8663391B2 | United States of America | B2 | |
| KR101380879B1 | Republic of Korea | B1 | |
| KR101387598B1 | Republic of Korea | B1 | |
| TWI463588BThis record | Taiwan Province of China | B | |
| CN102593031B | China | B |
1 legal event, as the office reported them to INPADOC
Events
| Event | Code | |
|---|---|---|
| Annulment or lapse of patent due to non-payment of feesLapsedMM4A | MM4A |
Numbers
- Publication
- I463588
- Application
- 96115185
Titles2
- English
- SUBSTRATE SUPPORT WITH ELECTROSTATIC CHUCK HAVING DUAL TEMPERATURE ZONES
- Chinese
- 具有雙溫度區之靜電夾盤的基材支撐件
Classification
- CPC, 3
- H10P72/7606
- H10P72/0602
- H10P72/72
- IPC, 5
- H01L21 67
- H10P72 76
- H10P14 24
- H10P72 00
- H10P95 00