Illumination apparatus
Abstract
An illumination apparatus is disclosed in the invention. The illumination apparatus includes a cavity with a diffusion surface, a light source, light spreading device, and at least an optical conditioning surface with a wavelike array formed thereon. The light spreading device and the optical conditioning surface uniformly spread the light generated by the light source inside the cavity, and guide most of the light out of the cavity with the aid of the diffusion surface.

Term
No projected expiry on record.
- Priority
- Filed
- Granted
- Today
60 claims: 47 independent, 13 dependent
- 1一種發光裝置包含:一空腔,係具有一散射表面及一出光區域;一光源,係用以發出光線;一光分散裝置,係設置於該空腔內,並朝一長度方向延伸且具有一翼狀凸出部、一入光面及一凹口,該凹口係遠離該入光面且用以大體上導引該光線朝向該翼狀凸出部;及一第一光學調整表面,係位於該光線之一路徑上且具有一第一波紋狀陣列。
- 2如申請專利範圍第1項所述之發光裝置,其中該散射表面係大體上為一朗伯表面(Lambertian Surface)。
- 3如申請專利範圍第1項所述之發光裝置,更包含:一光學膜片,係具有相對之一第一表面及一第二表面,且該第一光學調整表面係形成於該第一表面上。
- 4如申請專利範圍第3項所述之發光裝置,其中該光學膜片更包含:一第二光學調整表面,係形成於該第二表面上,該第二光學調整表面具有一第二波紋狀陣列,且該第二波紋狀陣列與該第一波紋狀陣列之陣列方向相異。
- 5如申請專利範圍第3項所述之發光裝置,其中該光學膜片係設置於該出光區域上。
- 6如申請專利範圍第3項所述之發光裝置,其中該光學膜片係介於該光分散裝置與該光源之間。
- 7如申請專利範圍第1項所述之發光裝置,其中該第一光學調整表面係形成於該入光面上。
- 8如申請專利範圍第1項所述之發光裝置,其中該第一光學調整表面係形成於該光分散裝置中。
- 9如申請專利範圍第8項所述之發光裝置,其中該光分散裝置係包含二種具有相異折射係數之材料。
- 10如申請專利範圍第1項所述之發光裝置,更包含:一光收集元件,係介於該光源及該光分散裝置之間並用以收集該光線,且該第一光學調整表面係形成於該光收集元件上。
- 11如申請專利範圍第10項所述之發光裝置,其中該第一光學調整表面係面向該光源。
- 12如申請專利範圍第10項所述之發光裝置,其中該第一光學調整表面係面向該光分散裝置。
- 13如申請專利範圍第12項所述之發光裝置,其中該光分散裝置及該光收集元件係一體成型。
- 14如申請專利範圍第10項所述之發光裝置,其中該光收集元件包含一凹槽,用以容置該光源。
- 15如申請專利範圍第1項所述之發光裝置,更包含:一光傳輸元件,係將該光線傳輸至該光分散裝置。
- 16如申請專利範圍第15項所述之發光裝置,其中該光傳輸元件係光纖、導光管(Light Pipe)或其他可以傳輸光線之裝置。
- 17如申請專利範圍第1項所述之發光裝置,其中該凹口係大體上為V型。
- 18如申請專利範圍第1項所述之發光裝置,其中該凹口係大體上為U型。
- 19如申請專利範圍第1項所述之發光裝置,其中該光源係一點狀光源。
- 20如申請專利範圍第1項所述之發光裝置,其中該光源係一半導體發光裝置。
- 21如申請專利範圍第1項所述之發光裝置,其中該光源係包含複數個發光裝置,且至少二個該複數個發光裝置所發出之該光線具有相異色彩。
- 22如申請專利範圍第1項所述之發光裝置,其中該光源係發出白光。
- 23如申請專利範圍第1項所述之發光裝置,其中該光分散 置之一材料係擇自丙烯酸樹脂(Acrylic Resin)、環烯烴聚合物(COC)、聚甲基丙烯酸甲酯(PMMA)、聚碳酸酯(PC)、聚醚醯亞胺(Polyetherimide)、氟碳聚合物(Fluorocarbon Polymer)、矽膠(Silicone)、上述材料之組合、及其他透光材料所構成之群組。
- 24一種光分散裝置包含:一翼狀凸出部;一入光面;一凹口,該凹口係遠離該入光面;及 光學調整表面,包含一波紋狀陣列,該波紋狀陣列具有一波前方向。
- 25如申請專利範圍第24項所述之光分散裝置,其中該光學調整表面係形成於該入光面上。
- 26如申請專利範圍第24項所述之光分散裝置,其中該光學調整表面係形成於該凹口上。
- 27如申請專利範圍第24項所述之光分散裝置,其中該第一光學調整表面係形成於該翼狀凸出部上。
- 28如申請專利範圍第24項所述之光分散裝置,其中該翼狀凸出部係包含一反射表面。
- 29如申請專利範圍第24項所述之光分散裝置,其中該翼狀凸出部係包含一折射表面。
- 30如申請專利範圍第24項所述之光分散裝置,其中該凹口係包含一尖頂指向該入光面。
- 31如申請專利範圍第24項所述之光分散裝置,其中該凹口係可反光。
- 32如申請專利範圍第24項所述之光分散裝置,其中該翼狀凸出部係朝一長度方向延伸。
- 33如申請專利範圍第32項所述之光分散裝置,其中該波前方向係大體上平行於該長度方向
- 34如申請專利範圍第24項所述之光分散裝置,其中該光學調整表面係介於二種具有不同折射係數之材料之間。
- 35一種發光裝置包含:一腔體,具有一底面及一側壁;複數個光源,係設置於該腔體內;一光分散裝置,係設置於該複數個光源之上;一光學調整面,係設置於該複數個光源之上且大體上平行 該底面,並具有一波紋狀陣列。
- 36如申請專利範圍第35項所述之發光裝置,更包含:一反射表面,係形成於該底面及該側壁之至少之一上。
- 37如申請專利範圍第35項所述之發光裝置,更包含:一擴散板,係大體上平行於該底面。
- 38如申請專利範圍第35項所述之發光裝置,其中該光分散裝置係具有一翼狀凸出部、一入光面及一凹口,該凹口係相對於該入光面。
- 39如申請專利範圍第38項所述之發光裝置,其中該翼狀凸出部係朝一長度方向延伸。
- 40如申請專利範圍第35項所述之發光裝置,其中該波紋狀陣列係包含一透鏡,該透鏡之一直徑係約為50~60μ m。
- 41如申請專利範圍第35項所述之發光裝置,其中該複數個光源係包含紅、藍與綠發光二極體其中之一。
- 42如申請專利範圍第35項所述之發光裝置,其中該複數個光源係呈一週期性排列。
- 43如申請專利範圍第35項所述之發光裝置,其中該複數個光源係呈一陣列排列。
- 44如申請專利範圍第35項所述之發光裝置,其中該複數個光源係呈一環狀排列。
- 45如申請專利範圍第35項所述之發光裝置,其中該複數個光源係呈一叢集式排列。
- 46一種發光裝置包含: 數個光源,係具有一排列方向;及一第一光學調整表面,具有一第一波紋狀陣列,該第一波紋狀陣列之一第一波前方向係大體上平行於該複數個光源之該排列方向。
- 47如申請專利範圍第46項所述之發光裝置,其中該複數個光源係包含紅、藍與綠發光二極體其中之一。
- 48如申請專利範圍第46項所述之發光裝置,其中該第一波前方向係為弧狀。
- 49如申請專利範圍第46項所述之發光裝置,其中該第一波前方向係為線狀。
- 50如申請專利範圍第46項所述之發光裝置,更包含:一第二光學調整表面,具有一第二波紋狀陣列,該第二波紋狀陣列之一第二波前方向係大體上相異於該第一波前方向。
- 51如申請專利範圍第50項所述之發光裝置,其中該第二波前方向係大體上垂直於該第一波前方向。
- 52如申請專利範圍第50項所述之發光裝置,其中該第二光學調整表面與該複數個光源係位於該第一光學調整表面 相對側。
- 53如申請專利範圍第46項所述之發光裝置,其中該第一波紋狀陣列或該第二波紋狀陣列係包含一透鏡,該透鏡之一直徑係約為50~60μ m。
- 54如申請專利範圍第46項所述之發光裝置,其中該第一波紋狀陣列或該第二波紋狀陣列中二個連續波峰或波谷間之一距離係約為100~120μ m。
- 55如申請專利範圍第46項所述之發光裝置,更包含:一凹穴,具有一底面,該複數個光源係設置於該底面之上,且該第一光學調整面係設置於該複數個光源之上;及一反射面,係設置於該底面上。
- 56如申請專利範圍第46項所述之發光裝置,更包含:一光學膜片,包含該第一光學調整表面;一填充材料,介於該複數個光源與該光學膜片之間,並具有一異於該光學膜片之熱膨脹係數。
- 57一種顯示裝置包含:一液晶層;複數個光源,具有一排列方向;一第一光學調整表面,具有一第一波紋狀陣列,該第一波 狀陣列之一第一波前方向係大體上平行於該複數個光源之該排列方向。
- 58如申請專利範圍第57項所述之顯示裝置,更包含:一光分散裝置,係包含一折射部及一反射部,用以分散該複數個光源所射出之光線。
- 59如申請專利範圍第58項所述之顯示裝置,更包含:一導光元件,具有一上表面及一側壁,該液晶層係面向該上表面,該光分散裝置係設置於側壁之側。
- 60如申請專利範圍第57項所述之顯示裝置,更包含:一導光元件,具有一上表面及一側壁,該液晶層係面向該上表面,該複數個光源係設置於該側壁之側。
Independent claims60
34 paragraphs, as filed
Light-emitting device
This creation is about a light-emitting device, especially a flat light-emitting device with a light-dispersing device.
Flat-panel display devices such as liquid crystal displays are non-self-luminous displays. Therefore, another device is required to provide a light source. Such light sources are usually called<img file="TWI249257B_D0001.tif" />Backlight. Backlight modules can generally be divided into two types: Direct Light Type and Edge Light Type; the components of traditional direct light backlight modules include lamps such as cold cathode tubes. However, in order to distribute the light evenly to provide an appropriate light source for the liquid crystal display, it is necessary to precisely control the spacing of each light source and the distance between the light source and the diffuser and the diffusor to avoid the illuminance distribution. Uneven. In addition to the components of the direct light source type backlight module described above, the components of the side light source type backlight module also need to add a light guide plate so that the light can be diffused. However, the side light source type backlight module still has an illuminance distribution The problem of unevenness. In addition, the components formed by the above two backlight modules are too complex, which is also a problem in terms of manufacturing cost and component complexity.
In order to overcome the above-mentioned problems, in US Patent No. 6,598,998, a side light emitting diode is disclosed, which includes a light emitting diode and a lens. The light emitted by the light emitting diode is guided to be horizontal by the lens. Lateral light. However, in order to effectively redirect the light emitted by the light-emitting diode into horizontal lateral light, the lens includes two parts, a serrated lens part and a funnel lens part, so that the overall lens has the disadvantage of thicker thickness; In addition to the packaging of the light-emitting diode itself, the packaging method requires additional lenses on each light-emitting diode. The entire packaging process is complicated and the packaging cost is high. In addition, the light extraction efficiency will be reduced due to the lens. Said that this reduction will reach more than 10%.
In addition, a light source device is disclosed in US Patent No. 6,582,103, which includes a cavity with a reflective surface and a light-emitting area; wherein the cavity contains at least one light source device, and the light source device includes a point light source and a diverter. By means of a light splitting device, the light emitted from a point light source is directed horizontally or downward to a cavity with a reflective surface to increase the brightness and light mixing effect; the light-emitting area includes a diffuser; the patent has improved parts The backlight module has the disadvantage of uneven illumination. However, each point light source needs to be equipped with an additional light splitting device in addition to its own packaging. The entire packaging process is complicated and the packaging cost is high; at the same time, because each point light source has an independent light guide device , Easy to cause light spots, the thickness of the entire backlight module needs to be increased to improve the light mixing effect, and the brightness will attenuate as the distance from the point light source increases, so the spatial arrangement of the point light sources must be strictly controlled and adjusted In order to maintain the brightness uniformity of the entire backlight module.
The techniques disclosed in the above patents have common features, that is, in addition to its own light-emitting diode package, each point light source needs to be equipped with a lens or a light guide device, resulting in five problems, (1) manufacturing process Complex; (2) High packaging cost; (3) Thickness of the backlight module; (4) It is not easy to control the brightness uniformity of the entire backlight module; (5) The light extraction efficiency is poor.
In view of the problems of the conventional technology, the present invention discloses a light-emitting device package<img file="TWI249257B_D0002.tif" />A cavity has a scattering surface and a light-emitting area; a light source can emit light; a light-dispersing device is arranged in the cavity and has a wing-shaped protrusion, a light-incident surface and a notch, The notch is far away from the light incident surface and is used to generally guide the light toward the wing-shaped protrusion; and a first optical adjustment surface is located on a path of the light and has a first corrugated array . Wherein, the scattering surface is substantially a Lambertian Surface. The light source may be a point light source or a semiconductor light-emitting device, and the light source is not limited to a single light source, but may include a plurality of light-emitting devices, and the light emitted by at least two of the plurality of light-emitting devices has different colors. The white light is formed by the combination of the plurality of light-emitting devices or a single light source. And the shape of the groove is approximately V-shaped or U-shaped.
The light-emitting device of the present invention further includes an optical film having a first surface and a second surface opposite to each other, and the first optical adjustment surface is formed on the first surface. In addition, the optical film further includes a second optical adjustment surface formed on the second surface. The second optical adjustment surface has a second corrugated array, and the second corrugated array is identical to the first corrugated array. The array direction of the array is different. And the optical film covers the light exit area, and the first optical adjustment surface is formed on the light incident surface or in the light dispersion device.
The light emitting device of the present invention further includes a light collecting element, which is interposed between the light source and the light dispersion device and used to collect the light generated by the light source, and<img file="TWI249257B_D0003.tif" />The first optical adjustment surface is formed on the light collection element, wherein the first optical adjustment surface can face the light source or the light dispersion device. In addition, the light collecting element includes a groove for accommodating the light source. Furthermore, the light-emitting device of the present invention further includes a light transmission element for transmitting the light to the light dispersion device, and the light transmission element is preferably an optical fiber.
<u style="single">The first embodiment</u>
Please refer to Figures 1a and 1b. Figure 1a is a schematic diagram of a light-emitting device according to an embodiment of the present invention. The light emitting device 1 includes a cavity 10, a light source 11, a light dispersion device 12, and a first optical adjustment surface 13. The cavity 10 includes a scattering surface 101 and a light emitting area 102. The scattering surface 101 is distributed inside the cavity 10; the light source 11 provides illumination to the light emitting device 1; the light dispersion device 12 disperses the light generated by the light source 11 to Produce uniform lighting effects.
The light (not shown) generated by the light source 11 will be scattered when irradiated on the scattering surface 101 so that the light can be evenly dispersed. Preferably, the scattering surface 101 is approximately a Lambertian Surface. The observer observes the same intensity of light scattered by the Lambertian surface at any angle, so the observer will not be able to observe the original light shape of the light after being scattered by the Lambertian surface, that is, the light will be emitted uniformly around. However, the scattering surface 101 can also be replaced by a reflective surface. Cavity 10 is composed of<img file="TWI249257B_D0004.tif" />The space formed by the housing of the light device 1 or other structures for accommodating the components in the light emitting device 1, such as the back cover or frame of the backlight module.
The light source 11 is composed of a single light-emitting device or two or more light-emitting devices. The light-emitting device has a single color light or a different color light, and a combination of different color lights can generate various colors of light. Preferably, the light source 11 is composed of three primary colors of red, blue, and green. The three primary colors can match most colors of light and can also produce white light. The light source 11 may be a point light source, a linear light source, or a surface light source, such as: light emitting diode (Light Emitting Diode; LED), laser diode (LD), cold cathode ray tube (Cold Cathode Fluorescent Lamp) ; CCFL), halogen lamp (Halogen Hulb), organic light emitting diode (Organic Lighting Emitting Diode; OLED), etc. The light source 11 is appropriately arranged under the light dispersing device 12, and the distance between the light source 11 and the light dispersing device 12 and the distance between the light sources 11 are adjusted to generate uniform colored light.
As shown in Figure 1b, Figure 1b is an enlarged view of a light dispersion device according to an embodiment of the present invention. The light dispersion device 12 has a wing-shaped protrusion 121, a notch 122, and a light incident surface 123, and the light dispersion device 12 extends in a length direction 124, the notch 122 is located far away from the light incident surface 123, preferably, the notch 122 is located on the opposite side of the light incident surface 123; the first optical adjustment surface 13 has a first corrugated shape Array 131, by using the first corrugated array 131, the light can be more evenly dispersed to prevent the light-emitting device 1 from generating significant light spots or displays.<img file="TWI249257B_D0005.tif" />Shades that are not evenly mixed. After the light enters the light dispersing device 12 from the light-incident surface 123, part of the light is directed to both sides of the recess by Total Internal Relection at the recess 122, that is, directed toward the irregular protrusion 121 Direction; part of the light is directly emitted from the notch 122, and the effect of refraction is produced due to the difference between the refractive index of the light dispersion device 12 and the external optical medium (Optical Medium), but because part of the light is totally reflected at the notch 122 The direction of the wing-shaped protrusion 121 reduces the amount of light directly emitted from the notch 122. This can prevent the light generated by the light source 11 from being strongly emitted from the notch and causing local light spots. Preferably, the notch The shape of 122 is approximately V-shaped or U-shaped. The light guided to the wing-shaped protrusion 121 through the notch 122 or other light directed to the wing-shaped protrusion 121 is refracted, reflected or directly emitted from the light dispersing device 12 at the wing-shaped protrusion 121 to achieve the effect of light dispersion. For example, light entering the light dispersion device 12 at a specific angle will be gradually mixed in the wing-shaped protrusion 121 after several times of total internal reflection, and finally obtain a more uniform color light and exit the light dispersion device 12. In addition, the light enters the light dispersing device 12 through the light incident surface 123. The light incident surface 123 is not limited to a flat surface, and may also be a concave shape or other shapes that facilitate light reception.
In the present invention, in addition to using the light dispersing device 12 to disperse the light, the first optical adjustment surface 13 is also used to disperse the light. As shown in Figure 1b, the first optical adjustment surface 13 has a first corrugated array 131. In this embodiment, the first optical adjustment surface 13 and the first corrugated array 131 are formed on the light incident surface of the light dispersion device 12 123 on. The first corrugated array 131 is connected to the first optical<img file="TWI249257B_D0006.tif" />A wavy surface formed on the entire surface 13, and this wavy surface has a fixed wave direction, that is, the array direction of the first corrugated array 131, which can be several tiny lenses When the light passes through the first optical adjustment surface 13, it will be guided by the tiny lenses on the first corrugated array 131 to form a more uniform light column and then enter the light dispersing device 12. Therefore, the light from the light source 11 can be Blurring and avoiding local light spots makes the color light generated by the light dispersion device 12 more uniform. In order to make the first corrugated array 131 have a better astigmatism effect, the diameter of the lens is about 50-60 μm. When the first corrugated array 131 has a continuous wave shape, the distance between two continuous wave crests or wave troughs is about 100-120 μm.
In addition, the first optical adjustment surface 13 can also be arranged in the light dispersion device 12, which is achieved by combining two materials with different refraction coefficients, and forming a corrugated array on the bonding surface of the two light-transmitting materials. The above-mentioned light splitting effect.
The material of the light dispersion device 12 is acrylic resin (Acrylic Resin), cycloolefin polymer (COC), polymethylmethacrylate (PMMA), polycarbonate (PC), polyetherimide (Polyetherimide), Fluorocarbon Polymer, Silicone, a combination of the above materials, or other light-transmitting materials.
<u style="single">Second embodiment</u>
Please refer to FIGS. 2a and 2b. FIGS. 2a and 2b are schematic diagrams of a light-emitting device according to another embodiment of the present invention. Elements in this embodiment that are the same as those in the first embodiment will be marked with the same symbols and will not be repeated here, and will be explained first.
The light-emitting device 1 of the present invention further includes an optical film 15 having a first surface 151 and a second surface 152 opposite to each other. In this embodiment, the first optical adjustment surface 13 is formed on the first surface 151, and The optical film 15 can be disposed on the light emitting area 102 of the light emitting device 1 or between the light dispersing device 12 and the light source 11, and as described in the first embodiment, the optical film 15 can also achieve the effect of dispersing light. In addition, a second optical adjustment surface 14 may be formed on the second surface 152 of the optical film 15, and a second corrugated array 141 is also formed on the second optical adjustment surface 14. However, the first corrugated array 131 and the second The array directions of the corrugated array 141 are different, as shown in Figure 2b. The first corrugated array 131 and the second corrugated array 141 overlapped in different directions can produce a moiré<img file="TWI249257B_D0007.tif" />), proper adjustment of the first corrugated array 131 and the second corrugated array 141 can redistribute the light intensity of the light passing through the moiré to achieve the effect of uniformly dispersing the light. The optical film 15 can use products such as those produced by S-Light Optoelectronics. In order to further improve the effect of astigmatism, a diffusion plate can be arranged on the optical film 15. The diffuser is not limited to one. To achieve the required light output quality, two or more diffusers can also be used.
In this embodiment, the light-incident surface 123 of the light dispersion device 12 is preferably not provided with the first optical adjustment surface 13, but the first optical adjustment surface 13 is not limited to only be provided on the light dispersion device 12 or the optical film surface. One of 15 can also be installed on the light dispersion device 12 and the optical film surface 15 at the same time. The size, shape, and frequency of the ripples on the first corrugated array 131 and the second corrugated array 141 can be the same or different, and their configuration or design depends on the type of light source and the lighting requirements of the light emitting device 1.
<u style="single">The third embodiment</u>
Please refer to FIGS. 3a and 3b. FIGS. 3a and b are schematic diagrams of a light-emitting device according to another embodiment of the present invention. Elements in this embodiment that are the same as those in the first embodiment will be marked with the same symbols and will not be repeated here, and will be explained first.
Since the light provided by the light source 11 usually does not go in the same direction but radiates around, some of the light may directly enter the cavity 10 without passing through the light dispersing device 12, which will affect the distribution of colored light. For this reason, the light-emitting device 1 of the present invention further has a light collecting element 16 to effectively collect the light emitted by the light source 11 to prevent the light from directly entering the cavity 10 and improve the efficiency of light use. The light collecting element 16 is located between the light source 11 and the light dispersing device 12. At the same time, in order to disperse light, the first optical adjustment surface 13 can also be formed on the light collecting element 16. When the first optical adjustment surface 13 is formed on the light collecting element When the element 16 faces the side of the light source 11, the other side of the light collection element 16 can be directly attached to the light dispersion device 12, or<img file="TWI249257B_D0008.tif" />The light collecting element 16 and the light dispersing device 12 are integrally formed. Conversely, the first optical adjustment surface 13 may also be formed on the side of the light collecting element 16 facing the light dispersing device 12. In order to allow light to completely enter the light collecting element 16, the light collecting element 16 further has a groove 161 for accommodating the light source 11, so that most of the light emitted by the light source 11 can enter the light collecting element 16.
In addition, the light source 11 of the light-emitting device 1 is not limited to being arranged in the cavity 10, and can also be arranged outside the cavity 10. When the light source 11 is arranged outside the cavity 10, the light generated by the light source 11 can be transmitted to the light dispersion device 12 through a light transmission element 17, which is an optical fiber, a light pipe or a light pipe. Other devices that can transmit light. One end of the light transmission element 17 may be connected to the light collection element 16 to improve the light utilization rate. Furthermore, the light transmission element 17 and the light source 11 can also be disposed in the cavity 10 at the same time. In this case, due to the flexibility of the light transmission element 17, the position of the light source 11 is not limited to the underside of the light dispersion device. Improve the flexibility of design.
<u style="single">Fourth embodiment</u>
If the arrangement direction of the light source 11 is parallel to the array direction of the first corrugated array 131, that is, the wavefront direction of the corrugation, the light rays passing through the first corrugated array 131 will produce a direction approximately parallel to the wavefront direction of the first corrugated array 131 Light shape 18. Therefore, when the arrangement direction of the light sources 11 and the wavefront direction of the first corrugated array 131 are both straight lines, the light will be dispersed in a straight line. when<img file="TWI249257B_D0009.tif" />The arrangement direction of the sources 11 and the wavefront direction of the first corrugated array 131 are arc-shaped or radial, and the light will be dispersed in an arc or radial shape. As shown in Figures 4a~4c. Theoretically, when the arrangement direction of the light source 11 is parallel or approximately parallel to the wavefront direction of the first corrugated array 131, the light generated by the light source 11 can be dispersed into a light shape 18 extending along the wavefront direction. In addition, the ratio of the light source 11 to the first corrugated array 131 in Figures 4a to 4c is exaggerated for clarity, and does not show the true ratio.
The second corrugated array 141 can be further disposed on the first corrugated array 131. As shown in Figure 2b, the wavefront direction of the second corrugated array 141 is different from the wavefront direction of the first corrugated array 131. Will be able to make the light produce different directions of dispersion effect. For example, the wavefront directions of the first corrugated array 131 and the second corrugated array 141 are perpendicular to each other, the light source 11 is arranged in a straight line, and the light is dispersed into linear light through the first corrugated array 131, and then passes through the second corrugated array 141 Then it is scattered into plane light.
The combination of the light source 11 and the first corrugated array 131 can make the point light source form a linear light source, achieving the effect of a CCFL or fluorescent tube. For example, the light source 11 is a plurality of point light sources, the light source 11 is arranged in a cavity 19, and the first corrugated array 131 is arranged on the light source 11, if the arrangement direction of the light source 11 is the same as that of the first corrugated array 131 The wavefront directions are all straight and parallel, and the light of the light source 11 will be dispersed into a straight line, and with the required circuit design, a light-emitting device similar to a fluorescent tube or CCFL can be formed. In order to make full use of the light generated by the light source 11, it can be arranged in the cavity 19<img file="TWI249257B_D0010.tif" />The reflective surface 191 reflects light.
Filling the cavity 19 with resin can directly form the first corrugated array 131 on the resin. The first corrugated array 131 can also be formed on an optical film 13 so that the optical film 13 covers the light source 11. In order to relieve the thermal stress caused by the heat generated by the light source 11, a filling material 192 can be filled between the optical film 13 and the light source 11. 11 thermal stress generated.
The various light-emitting devices 1 exemplified above can be used as a backlight module of a liquid crystal display, and can also be used for lighting. When the backlight module is a direct light source type, the backlight module should at least include the light source 11 and the first corrugated array 131. Preferably, the arrangement direction of the light source 11 is substantially parallel to the waves of the first corrugated array 131 Forward direction. In addition, the light dispersing device 12 can also be arranged between the light source 11 and the liquid crystal layer of the liquid crystal display as needed to improve the uniformity of light distribution. When the backlight module is a side light source type, a light guide plate (Light Guide Plate) is required to guide the side light toward the display surface of the liquid crystal display. At this time, the light source 11 is arranged on the side of the light guide plate, and The wave front direction of the corrugated array 131 is parallel to the arrangement direction of the light source 11, and can form an approximately linear light shape, such as a light source similar to a CCFL. The first corrugated array 131 and the light source 11 form a module, as shown in FIG. 5. The first corrugated array 131 can also be directly formed on the light guide plate, such as the light incident position of the light guide plate (not shown). In addition, the light source 11 emits<img file="TWI249257B_D0011.tif" />The light can pass through the light dispersion device 12 and then enter the light guide plate. At this time, the wing-shaped protrusion 121 of the light dispersion device 12 faces the light incident position of the light guide plate.
Although the present invention has been described above with specific embodiments, it is not intended to limit the content of the present invention. Anyone who is familiar with this technique can make various modifications without departing from the scope of the attached patent application. .
<p>1. . . Light-emitting device</p><p>10. . . Cavity</p><p>101. . . Scattering surface</p><p>102. . . Light emitting area</p><p>11. . . light source</p><p>12. . . Light dispersion device</p><p>121. . . Wing-like protrusion</p><p>121. . . Notch</p><p>123. . . Light incident surface</p><p>124. . . Longitudinal direction</p><p>13. . . The first optical adjustment surface</p><p>131. . . First corrugated array</p><p>14. . . Second optical adjustment surface</p><p>141. . . Second corrugated array</p><p>15. . . Optical film</p><p>151. . . First surface</p><p>152. . . Second surface</p><p><img file="TWI249257B_D0012.tif" />6. . . Light collection element</p><p>161. . . Groove</p><p>17. . . Optical transmission element</p><p>18. . . Light form</p><p>19. . . Pit</p><p>191. . . Reflective surface</p>
Figure 1a is a schematic diagram of a light-emitting device according to an embodiment of the present invention; Figure 1b is an enlarged view of a light-dispersing device in a light-emitting device according to an embodiment of the present invention; Figure 2a is a light-emitting device according to another embodiment of the present invention Schematic diagram of the device; Figure 2b is an enlarged view of an optical film in a light-emitting device according to another embodiment of the present invention; Figures 3a and 3b are schematic diagrams of a light-emitting device according to another embodiment of the present invention; Figures 4a~4c It is a schematic diagram of the arrangement of a corrugated array and a light source according to an embodiment of the present invention; and FIG. 5 is a schematic diagram of the structure of a light-emitting device according to another embodiment of the present invention. .
28 sheets
Sheet 1 Sheet 2 Sheet 3 Sheet 4 Sheet 5 Sheet 6 Sheet 7 Sheet 8 Sheet 9 Sheet 10 Sheet 11 Sheet 12 Sheet 13 Sheet 14 Sheet 15 Sheet 16 Sheet 17 Sheet 18 Sheet 19 Sheet 20 Sheet 21 Sheet 22 Sheet 23 Sheet 24 Sheet 25 Sheet 26 Sheet 27 Sheet 28
Every citation, both ways
| Document | Relation | Office | Cited during |
|---|---|---|---|
| TWI412707B | Cited by | Taiwan Province of China | Examiner |
| TWI675987B | Cited by | Taiwan Province of China | Examiner |
54 members in 5 offices
Priority claims2
| Document | Office | Kind | Date |
|---|---|---|---|
| 093129157 | Taiwan Province of China | – | |
| 93129157 | Taiwan Province of China | A |
Members54
| Document | Office | Kind | |
|---|---|---|---|
| TWI249257BThis record | Taiwan Province of China | B | |
| DE102005045587A1 | Germany | A1 | |
| US2006065900A1 | United States of America | A1 | |
| US2006067640A1 | United States of America | A1 | |
| TW200611435A | Taiwan Province of China | A | |
| DE102005045589A1 | Germany | A1 | |
| JP2006091896A | Japan | A | |
| JP2006093148A | Japan | A | |
| JP2006093711A | Japan | A | |
| JP2006099117A | Japan | A | |
| US2006076571A1 | United States of America | A1 | |
| US2006077685A1 | United States of America | A1 | |
| DE102005045590A1 | Germany | A1 | |
| DE102005045588A1 | Germany | A1 | |
| KR20060051571A | Republic of Korea | A | |
| KR20060051573A | Republic of Korea | A | |
| KR20060051626A | Republic of Korea | A | |
| TW200622437A | Taiwan Province of China | A | |
| TW200627672A | Taiwan Province of China | A | |
| TW200628753A | Taiwan Province of China | A | |
| TW200629599A | Taiwan Province of China | A | |
| KR20060115564A | Republic of Korea | A | |
| US7142769B2 | United States of America | B2 | |
| US2007104963A1 | United States of America | A1 | |
| TWI282632B | Taiwan Province of China | B | |
| US7341358B2 | United States of America | B2 | |
| US2008112156A1 | United States of America | A1 | |
| TWI298207B | Taiwan Province of China | B | |
| US7454119B2 | United States of America | B2 | |
| US2009146049A1 | United States of America | A1 | |
| US7724321B2 | United States of America | B2 | |
| US7745832B2 | United States of America | B2 | |
| US2010171902A1 | United States of America | A1 | |
| KR100990813B1 | Republic of Korea | B1 | |
| KR101044682B1 | Republic of Korea | B1 | |
| US8054409B2 | United States of America | B2 | |
| US2012050870A1 | United States of America | A1 | |
| TWI359987B | Taiwan Province of China | B | |
| KR20120038950A | Republic of Korea | A | |
| JP2012113312A | Japan | A | |
| JP2012142294A | Japan | A | |
| KR101178778B1 | Republic of Korea | B1 | |
| KR101204806B1 | Republic of Korea | B1 | |
| JP5150047B2 | Japan | B2 | |
| JP5193418B2 | Japan | B2 | |
| JP5367850B2 | Japan | B2 | |
| JP5417469B2 | Japan | B2 | |
| US8657467B2 | United States of America | B2 | |
| KR101381241B1 | Republic of Korea | B1 | |
| US8704149B2 | United States of America | B2 | |
| US8724052B2 | United States of America | B2 | |
| DE102005045590B4 | Germany | B4 | |
| DE102005045588B4 | Germany | B4 | |
| DE102005045587B4 | Germany | B4 |
1 legal event, as the office reported them to INPADOC
Events
| Event | Code | |
|---|---|---|
| Expiration of patent term of an invention patentMK4A | MK4A |
Numbers
- Publication
- I249257
- Application
- 94114630
Titles4
- Chinese
- 發光裝置
- English
- Illumination Apparatus
- Unlabeled
- 發光裝置
- Unlabeled
- Light-emitting device
Classification
- CPC, 10
- G02B19/0071
- G02F1/1335
- F21V7/0091
- G02B6/0018
- G02B6/0021
- G02B6/0033
- G02B19/0028
- G02B19/0061
- F21Y2115/10
- Y10T428/31551
- IPC, 2
- F21S2 00
- F21V5 04