WO2015158049A1 - 一种显示装置及其制作方法 - Google Patents
一种显示装置及其制作方法 Download PDFInfo
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- WO2015158049A1 WO2015158049A1 PCT/CN2014/082117 CN2014082117W WO2015158049A1 WO 2015158049 A1 WO2015158049 A1 WO 2015158049A1 CN 2014082117 W CN2014082117 W CN 2014082117W WO 2015158049 A1 WO2015158049 A1 WO 2015158049A1
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- nanoparticles
- film layer
- display device
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- light emitting
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000010408 film Substances 0.000 claims abstract description 163
- 239000002105 nanoparticle Substances 0.000 claims abstract description 113
- 239000010409 thin film Substances 0.000 claims abstract description 19
- 239000000758 substrate Substances 0.000 claims description 65
- 238000000034 method Methods 0.000 claims description 19
- 238000002161 passivation Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 8
- 229910004261 CaF 2 Inorganic materials 0.000 claims description 3
- 229910004573 CdF 2 Inorganic materials 0.000 claims description 3
- 229910017768 LaF 3 Inorganic materials 0.000 claims description 3
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 claims description 3
- 101100274801 Caenorhabditis elegans dyf-3 gene Proteins 0.000 claims 1
- 239000010410 layer Substances 0.000 description 172
- 239000003086 colorant Substances 0.000 description 14
- 239000004973 liquid crystal related substance Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000002346 layers by function Substances 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 5
- 229920002120 photoresistant polymer Polymers 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000004528 spin coating Methods 0.000 description 2
- 241001270131 Agaricus moelleri Species 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 238000000605 extraction Methods 0.000 description 1
- -1 i.e. Substances 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
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- 239000012260 resinous material Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/854—Arrangements for extracting light from the devices comprising scattering means
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
- H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/875—Arrangements for extracting light from the devices
- H10K59/877—Arrangements for extracting light from the devices comprising scattering means
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
Definitions
- the present invention relates to the field of display technologies, and in particular, to a display device and a method of fabricating the same. Background technique
- OLED organic light emitting diode
- the white light organic light emitting diode technology is relatively mature and has high luminous efficiency, so it has been widely used in organic light emitting diode display devices.
- the white light organic light emitting diode display device includes an array substrate 100 and a package substrate 200. As shown in FIG. 1, the array substrate 100 includes a first substrate substrate 10 and a black matrix film layer formed on the first substrate substrate 10. 11. A color film layer 12, a flat layer 13, a first electrode layer 14, a second electrode layer 17, an organic light-emitting function layer 15 between the first electrode 14 and the second electrode 17, and a pixel defining layer 16. When the first electrode 14 and the second electrode 17 are simultaneously loaded with an electric signal, the organic light-emitting function layer 15 has a current passing through, and the active functional layer emits light to realize display.
- the illuminating functional layer comprises a plurality of illuminating units
- the color film layer comprises color film units of three colors of red, green and blue
- each of the illuminating units corresponds to a color film unit of one of the colors to realize color display.
- the organic light-emitting display realized by the method since the light is emitted through the flat layer 13, the color film layer 12, and the base substrate 11, part of the light is totally reflected, so that the light has a certain loss, which directly affects the display.
- the display brightness of the device since the light is emitted through the flat layer 13, the color film layer 12, and the base substrate 11, part of the light is totally reflected, so that the light has a certain loss, which directly affects the display.
- the display brightness of the device since the light is emitted through the flat layer 13, the color film layer 12, and the base substrate 11, part of the light is totally reflected, so that the light has a certain loss, which directly affects the display.
- the display brightness of the device since the light is emitted
- Embodiments of the present invention provide a display device and a method of fabricating the same, which solves the problem that the conventional display device is low in display brightness due to the influence of other film layers.
- Embodiments of the present invention provide a display device including a light emitting unit, and further comprising a plurality of thin films located in a light exiting path of the light emitting unit, at least one of the plurality of thin films having nanoparticles.
- At least one of the plurality of layers of film is a film having nanoparticles, so that the light single The light emitted by the element is scattered by the nanoparticles to reduce the total reflection of the light, increase the output of the light, thereby increasing the light extraction rate of the entire display device and increasing the display brightness.
- At least one layer of the film having nanoparticles comprises a colored film layer.
- the at least one film having nanoparticles further comprises a passivation layer and/or a flat layer.
- the nanoparticles are one or several inorganic nanoparticles.
- the inorganic nanoparticle material from one or more selected from the group consisting of: MgF 2, CaF 2, Si0 2, BaF, B 2 0 3, NaF, A1F 3, SiO, LiF, Na 3 AlF 6 , KF, CdF 2 , DyF 3 , LaF 3 , W0 3 , ZnSe, ZnS, Ti0 2 , Sb 2 S 3 , Zr0 2 , BaO, BaS, BaTi0 3 , Bi 2 0 3 , V 2 0 5 , and SiN x .
- the color film layer has nanoparticles, and the color film layer has a thickness of 1.5 to 3 ⁇ m.
- the color film layer comprises: a red film layer, a green film layer, and a blue film layer, wherein only the blue film layer has nanoparticles.
- the red film layer, the green film layer, and the blue film layer each have nanoparticles.
- the nanoparticle has a volume concentration in the color film layer of 1% to 60%.
- the volume concentration of the nanoparticles in the color film layer is 5%-30%.
- the nanoparticles have a particle size of 1.5-5 nm.
- the light emitting unit is a backlight unit or an organic light emitting diode light emitting unit.
- An embodiment of the present invention provides a method for fabricating a display device, where the display device includes a light emitting unit, and the method includes:
- a plurality of thin films are formed in the light exiting path of the light emitting unit, and at least one of the plurality of thin films has nanoparticles.
- At least one film having nanoparticles comprises a color film layer; and the method further comprises: forming a color film layer doped with nanoparticles on the substrate.
- the step of forming a color film layer doped with nanoparticles on the substrate substrate comprises:
- a red film layer and a green film layer not doped with nanoparticles are formed on the base substrate.
- the step of forming a color film layer doped with nanoparticles on the substrate substrate comprises:
- the at least one film having nanoparticles further comprises a passivation layer and/or a flat layer.
- FIG. 1 is a schematic view of a conventional organic light emitting diode light emitting display
- FIG. 2 is a schematic diagram of an organic light emitting diode light emitting display according to an embodiment of the present invention
- FIG. 3 is a schematic diagram of another organic light emitting diode light emitting display according to an embodiment of the present invention.
- FIG. 4 is a schematic diagram of a liquid crystal display according to an embodiment of the present invention.
- FIG. 5 is a schematic diagram showing the attenuation of the brightness of the sub-pixels of different colors with the display time;
- FIG. 6 is a schematic diagram of a method for forming a color film layer according to an embodiment of the present invention;
- FIG. 7 is a schematic diagram of a display device according to an embodiment of the present invention; Schematic diagram of the production method.
- Electrode layer 100-array substrate; 101-passivation layer; 102-thin film transistor; 200-package substrate; 300-color film substrate; 301-second substrate.
- Embodiments of the present invention provide a display device, including a light emitting unit, further including a plurality of thin films in the light exiting path of the light emitting unit, at least one of the plurality of thin films having nanoparticles.
- Nanoparticles i.e., particles having a particle size of 1-100 nm, are in the range of colloidal particle sizes. They are in the transition zone between clusters and macroscopic objects, and are a group of a small number of atoms or molecules, so the nanoparticles have new physicochemical properties. Due to the small particle size and large surface curvature, the nanoparticles have a certain surface scattering effect. And further preferably, the nanoparticles have a particle size of from 1.5 to 5 nm.
- the light emitted by the light emitting unit is emitted through a plurality of layers of the film, wherein at least one of the plurality of layers of the film is a film having nanoparticles, that is, disposed in a plurality of layers of the light emitting side of the light emitting unit. At least one layer is a film having nanoparticles.
- the light emitted by the light-emitting unit is emitted through a plurality of layers of film
- those skilled in the art will appreciate that light emitted from the light-emitting unit is emitted through a single layer of film, which is also feasible.
- the single layer film may have nanoparticles to increase the output of light.
- the light emitting unit is a backlight unit or an organic light emitting diode light emitting unit.
- the display device may be a liquid crystal display device or a self-luminous display device.
- the light emitting unit is a backlight unit, and light emitted by the backlight unit of the liquid crystal display device is emitted through a pixel unit on the substrate.
- the light emitting unit may be an organic light emitting diode light emitting unit.
- the light emitting unit is an LED light emitting unit as an example for detailed description.
- At least one layer of the film having nanoparticles comprises a colored film layer.
- a color film layer is generally disposed, including a film layer of three primary colors of red, green, and blue, wherein one pixel unit includes a red sub-pixel, a green sub-pixel, and a blue color.
- the sub-pixel realizes color display of various colors by adjusting the display gray scale of the sub-pixels of different colors.
- the light emitting diode may be a full fluorescent light emitting diode, a full phosphorescent light emitting diode, or a light emitting diode that is phosphorescent and fluorescent in accordance with the light emitting.
- a self-luminous display such as an organic light emitting diode display
- light of different colors can be emitted by one diode, and colorful display can be realized without passing through the color film layer.
- the light emitted by the organic light-emitting function layer 15 is scattered by the nanoparticles of the color film layer 12, thereby increasing the light output of the color film layer, thereby improving the whole.
- the light output rate of the display device when nanoparticles are added to the color film layer 12, the light emitted by the organic light-emitting function layer 15 is scattered by the nanoparticles of the color film layer 12, thereby increasing the light output of the color film layer, thereby improving the whole. The light output rate of the display device.
- the at least one film having nanoparticles further comprises a passivation layer and/or a flat layer.
- the light emitted by the light emitting unit is also emitted through the passivation layer and/or the flat layer, and the passivation layer and/or the flat layer have nanoparticles, which can be understood as: the light emitted by the light emitting unit also passes through the blunt a layer or a flat layer, and the passivation layer or the flat layer has nanoparticles; or, the light emitted by the light emitting unit is also emitted through the passivation layer and the flat layer, and the passivation layer and the The flat layer has nanoparticles.
- the light emitting unit of the display device is an organic light emitting diode light emitting unit
- light emitted from the organic light emitting diode (organic light emitting function layer 15) is emitted through the flat layer 13 and the color film layer 12 (substrate There is no passivation layer thereon, and nanoparticles may be added to the flat layer 13 and the color film layer 12.
- a film or layer structure on the array substrate of the liquid crystal display is large.
- a thin film transistor 102 and a passivation layer 101 are disposed on the first substrate 10 of the array substrate 100 on the light-emitting side of the backlight unit, and a black matrix 1 1 and a color film layer 12 are disposed on the color filter substrate 300.
- a flat layer 13 The color film layer 12 and the flat layer 13 on the color filter substrate 300 of the liquid crystal display may be doped with nanoparticles; at the same time, the passivation layer 101 of the array substrate 100 may be doped with nanoparticles to further improve light penetration. Over rate.
- the nanoparticles are one or several inorganic nanoparticles. That is, one nanoparticle can be added in a thin film, for example, Si0 2 is added only in the blue nanoparticle film layer. It is also possible to add several mixed inorganic nanoparticles to a film. For example, it is also possible to add SiO 2 and SiN x mixed nanoparticles to the blue film layer.
- the nanoparticles may also be other nanoparticles, for example, may also be optional, the inorganic nanoparticles are made of one or more materials selected from the group consisting of MgF 2 , CaF 2 , Si0 2 , BaF, B 2 0 3 , NaF, A1F 3 , SiO, LiF, Na 3 AlF 6 , KF, CdF 2 , DyF 3 , LaF 3 , W0 3 , ZnSe, ZnS, Ti0 2 , Sb 2 S 3 , Zr0 2 , BaO, BaS, BaTi0 3 , Bi 2 0 3 , V 2 0 5 , and SiN x .
- the inorganic nanoparticles may also be other nanoparticles having the same or similar properties as the above materials, and the present invention The embodiment will be described in detail only by taking the above as an example.
- the color film layer has nanoparticles, and the color film layer has a thickness of 1.5 to 3 ⁇ m. That is, nanoparticles are only present in the color film layer, and nanoparticles are not added in other film or layer structures.
- the color film layer comprises: a red film layer, a green film layer, and a blue film layer, wherein only the blue film layer has nanoparticles.
- the display device generally realizes colorful display by adjusting the gray scales of different sub-pixels through three primary colors of red, green, and blue, but the display unit of the existing display device may also include red, green, and blue. , white or red, green, blue, yellow, and other sub-pixels of other colors. And the film layers of different colors are respectively formed by one patterning process, the display device includes sub-pixels of other colors, and the nanoparticles may be separately added to the sub-pixels of other different colors.
- the sub-pixels of the display unit including red, green and blue colors that is, the color film layer including the red film layer, the green film layer and the blue film layer are described in detail as an example. As shown in FIG.
- the luminance of the blue sub-pixel 3 in the organic light emitting diode display decays faster with time, and the luminance of the green sub-pixel 1 and the red sub-pixel 2 decays slowly with time, and the color coordinate of the device emits white drift.
- the red shift phenomenon occurs in the balance, that is, the white balance is warm when the full color display is displayed, which seriously affects the service life of the display. Therefore, as shown in Figure 3, adding nanoparticles only to the blue (B) layer can reduce the attenuation rate of blue, which in turn makes the attenuation of the blue sub-pixel and the red sub-pixel close, extending the life of the display.
- the red film layer, the green film layer, and the blue film layer each have nanoparticles. That is, as shown in Fig. 2, nanoparticles are added to the red (R) film layer, the green (G) film layer, and the blue (B) film layer to improve the overall display brightness of the display device.
- the nanoparticle has a volume concentration in the color film layer of 1% to 60%.
- the volume concentration, or volume percent concentration refers to the volume (in milliliters) of the solute per 100 milliliters of solution. It is further preferred that the nanoparticle has a volume concentration in the color film layer of from 5% to 30%. In order to get better luminosity.
- An embodiment of the present invention provides a method for fabricating a display device, where the display device includes a light emitting unit, and the method includes:
- a plurality of thin films are formed in the light exiting path of the light emitting unit, and at least one of the plurality of thin films has nanoparticles.
- the at least one film having nanoparticles is formed on a light exiting side of the light emitting unit.
- the display device is a liquid crystal display device
- the light emitting list The element is a backlight unit
- the array substrate and the color filter substrate of the liquid crystal display device are both disposed on the light exiting side of the light emitting unit.
- the display device is a self-luminous display device, it can be divided into a top light-emitting display device and a low-light-emitting display device.
- the film having nanoparticles in the present invention is on the light-emitting side of the light-emitting unit.
- the light emitted by the light-emitting unit is emitted through the thin film, and the nanoparticles scatter the light of the backlight unit to reduce the total reflection of light, improve the light output, thereby improving the light-emitting rate of the entire display device and increasing the display brightness.
- At least one film having nanoparticles comprises a color film layer; and the method further comprises: forming a color film layer doped with nanoparticles on the substrate.
- the blue resin-based photoresist material doped with SiO 2 nanoparticles can be spin-coated, and exposed, developed, and cured to form a blue film layer having a thickness of 1.5 to 3 ⁇ m. I.e. formed Si0 2 nanoparticles doped with a blue film on the base substrate.
- the red film layer and the green film layer may be a normal red film layer and a green film layer formed without adding nanoparticles, directly coated with a red resin-based photoresist material, and a green resin-based photoresist material. That is: Nanoparticles are added only to the blue film layer.
- the at least one film having nanoparticles further comprises a passivation layer and/or a flat layer.
- a flat layer 13 doped with nanoparticles is formed on the base substrate 10 of the array substrate 100.
- the passivation layer 101 doped with nanoparticles may be formed on the first substrate 10 of the array substrate 100, and may also be on the second substrate 301 of the color filter substrate 300.
- a color film layer 12 doped with nanoparticles and a flat layer 13 are formed.
- the step of forming a color film layer doped with nanoparticles on the base substrate comprises:
- Step 101 Form a blue film layer doped with nanoparticles on the base substrate.
- Step 102 forming a red film layer and a green film layer without doping nanoparticles on the base substrate.
- the formed display device is as shown in FIG. 3.
- the blue (B) film layer in the color film layer 12 is doped with nanoparticles, and the red (R) film layer and the green (G) film layer are not doped with nanoparticles.
- the luminance of the blue sub-pixel in the organic light-emitting diode display decays faster with time
- the luminance of the green sub-pixel and the red sub-pixel decays slowly with time
- the white coordinate of the color coordinate drift of the device emits a red shift phenomenon. That is, the white balance is warm when the full color display is displayed, which seriously affects the service life of the display. Therefore, as shown in FIG. 3, adding nanoparticles only to the blue (B) film layer can reduce the attenuation rate of blue, thereby making the attenuation of the blue sub-pixel and the red sub-pixel close, and prolonging the service life of the display.
- the order in which the color film layers of different colors are formed may be indefinite. Since each of the color film layers is formed by one exposure, a color film layer of a different color can be formed as needed.
- the step of forming a color film layer doped with nanoparticles on the substrate substrate comprises:
- a red film layer doped with nanoparticles, a green film layer, and a blue film layer are formed on the base substrate.
- the formed display device is as shown in FIG. 2, and the blue (B) film layer, the red (R) film layer and the green (G) film layer in the color film layer 12 are doped with nanoparticles to improve the overall display device. Display brightness.
- the method includes:
- Step 201 Form a black matrix film layer on the first base substrate.
- a film is formed on the first substrate by spin coating a resin-based material, and a black matrix is formed by exposure, development, and curing.
- Step 202 Form a red film layer, a green film layer, and a blue film layer doped with SiO 2 nanoparticles on the first base substrate.
- the substrate was spin-coated on a substrate doped with a red resinous material Si0 2 nanoparticles, and exposed and developed, to form a red cured film, the thickness of film layer formed is red Ao 1.5-3 m; SiO
- the 2 nanoparticles have a particle size between 1 and 10 nanometers and have a volume concentration of 30% in the red film layer.
- a green film layer and a blue film layer are sequentially formed in accordance with the above process.
- Step 203 forming a flat layer on the first base substrate.
- the flat layer may be formed by spin coating an acrylic material and having a thickness of about 4 ⁇ m.
- Step 204 forming a first electrode layer, a pixel defining layer, and an organic layer on the first substrate a light emitting functional layer and a second electrode layer.
- the method for fabricating the first electrode layer, the pixel defining layer, the organic light emitting functional layer, and the second electrode layer can be referred to the prior art, and is not described herein.
- the acrylic material can be spin-coated and exposed, developed, and cured to define a layer, and the thickness of the pixel defining layer is about 1.5 microns.
- each layer is formed on the first substrate by the above steps 201-204 and the array substrate 100 shown in Fig. 2 is formed.
- Step 205 Perform the pair of the array substrate and the package substrate.
- the display device formed after the cartridge is as shown in Fig. 2, in which the color film layer is doped with nanoparticles.
- the display device formed as shown in FIG. 2 is not limited to the above steps, and the corresponding production sequence may be adjusted correspondingly as needed.
- the order of steps 201 and 202 can also be reversed.
- the embodiments of the present invention are described in detail by way of example only.
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Priority Applications (1)
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US14/436,069 US9691828B2 (en) | 2014-04-15 | 2014-07-14 | Display apparatus having thin films including nanoparticles |
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CN201410150972.9A CN103943661A (zh) | 2014-04-15 | 2014-04-15 | 一种显示装置及其制作方法 |
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CN104167431B (zh) * | 2014-08-12 | 2018-05-25 | 京东方科技集团股份有限公司 | Oled显示器件及应用其的oled显示装置 |
CN104347680A (zh) * | 2014-11-10 | 2015-02-11 | 合肥鑫晟光电科技有限公司 | 一种amoled显示面板及其制作方法、显示装置 |
CN104600093A (zh) * | 2014-12-25 | 2015-05-06 | 上海和辉光电有限公司 | 一种显示面板 |
CN105182625A (zh) * | 2015-09-28 | 2015-12-23 | 京东方科技集团股份有限公司 | 一种显示基板及其制作方法和显示装置 |
CN106707619A (zh) * | 2017-01-16 | 2017-05-24 | 深圳市国显科技有限公司 | 一种白色面光源及其液晶显示器 |
CN106935725A (zh) * | 2017-02-17 | 2017-07-07 | 武汉华星光电技术有限公司 | 有机电致发光显示装置 |
TWI658301B (zh) * | 2017-12-22 | 2019-05-01 | 財團法人工業技術研究院 | 顯示裝置 |
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US11930683B2 (en) | 2020-08-10 | 2024-03-12 | Tcl China Star Optoelectronics Technology Co., Ltd. | Color filter layer and display device |
CN111995914A (zh) * | 2020-08-10 | 2020-11-27 | Tcl华星光电技术有限公司 | 彩膜层以及显示装置 |
US20220109105A1 (en) * | 2020-10-02 | 2022-04-07 | Universal Display Corporation | Application of nanoparticles for plasmon energy extraction in organic devices |
CN114156363B (zh) * | 2021-09-28 | 2024-04-30 | 福州大学 | 一种硫化锑光电晶体管及其制备方法 |
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US20170033163A1 (en) | 2017-02-02 |
US9691828B2 (en) | 2017-06-27 |
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