WO2015143840A1 - Organic electroluminescence display panel and manufacturing method therefor and display device - Google Patents
Organic electroluminescence display panel and manufacturing method therefor and display device Download PDFInfo
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- WO2015143840A1 WO2015143840A1 PCT/CN2014/085590 CN2014085590W WO2015143840A1 WO 2015143840 A1 WO2015143840 A1 WO 2015143840A1 CN 2014085590 W CN2014085590 W CN 2014085590W WO 2015143840 A1 WO2015143840 A1 WO 2015143840A1
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- pixel defining
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- display panel
- organic electroluminescent
- organic
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000005401 electroluminescence Methods 0.000 title abstract description 26
- 239000000758 substrate Substances 0.000 claims abstract description 60
- 239000011159 matrix material Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 16
- -1 polyhexafluoropropylene Polymers 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 10
- 239000011810 insulating material Substances 0.000 claims description 9
- 239000004642 Polyimide Substances 0.000 claims description 5
- 239000004793 Polystyrene Substances 0.000 claims description 5
- 238000000059 patterning Methods 0.000 claims description 5
- 229920001721 polyimide Polymers 0.000 claims description 5
- 229920001296 polysiloxane Polymers 0.000 claims description 5
- 229920002223 polystyrene Polymers 0.000 claims description 5
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims 1
- 229910052731 fluorine Inorganic materials 0.000 claims 1
- 239000011737 fluorine Substances 0.000 claims 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims 1
- 229920002776 polycyclohexyl methacrylate Polymers 0.000 claims 1
- 239000004926 polymethyl methacrylate Substances 0.000 claims 1
- 239000010408 film Substances 0.000 description 12
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 4
- 239000003086 colorant Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229920002239 polyacrylonitrile Chemical group 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- FWLDHHJLVGRRHD-UHFFFAOYSA-N decyl prop-2-enoate Chemical compound CCCCCCCCCCOC(=O)C=C FWLDHHJLVGRRHD-UHFFFAOYSA-N 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005525 hole transport Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229920000129 polyhexylmethacrylate Polymers 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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
-
- 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
- H10K59/878—Arrangements for extracting light from the devices comprising reflective means
Definitions
- Organic electroluminescence display panel manufacturing method thereof and display device
- Embodiments of the present disclosure relate to an organic electroluminescence display panel, a method of fabricating the same, and a display device. Background technique
- OLEDs organic electroluminescence display devices
- LCD liquid crystal display
- the structure of the OLED display device mainly includes: a substrate, a plurality of organic electroluminescent units arranged in a matrix on the substrate, and a pixel defining layer between adjacent organic electroluminescent units; wherein each Each of the organic electroluminescent pixel structures comprises an oppositely disposed anode and cathode, and a luminescent layer between the anode and the cathode.
- the luminescence of the OLED display device is achieved by exciting the organic material in the luminescent layer when the electrons in the cathode and the holes in the anode recombine in the luminescent layer.
- OLED can be divided into two categories: passive driving and active driving, namely direct addressing and thin film transistor (TFT) matrix addressing. Among them, active driving is also called active matrix (AM), and each light-emitting unit in the active OLED display device is independently controlled by TFT addressing.
- TFT thin film transistor
- the material of the pixel defining layer is a light transmissive material, so that the lateral light emitted by each organic electroluminescent unit is incident on the organic electrochemistry of the adjacent other color via the reflection of the cathode.
- the light-emitting unit light leakage and light color interference are caused, which may cause color purity and contrast of the active OLED display device to decrease.
- an opaque compound is used instead of the light transmissive material as a material for the pixel defining layer.
- an opaque compound, such as a colorant is generally a carbonaceous material having a lower dielectric constant, the photoelectric performance of the organic electroluminescent unit of the active OLED display device is degraded.
- An embodiment of the present disclosure provides an organic electroluminescence display panel, including: a substrate, a plurality of organic electroluminescent units arranged in a matrix on the substrate, and a pixel defining structure, wherein each has The electroluminescent unit includes an anode layer, a cathode layer, and an organic light-emitting layer between the anode layer and the cathode layer, the pixel defining structure being located adjacent to the organic light-emitting layer.
- Another embodiment of the present disclosure provides a method of fabricating an organic electroluminescence display panel, wherein each of the organic electroluminescent units includes an anode layer, a cathode layer, and between the anode layer and the cathode layer
- Another embodiment of the present disclosure in which the pixel defining structure is located adjacent to the adjacent organic light emitting layer provides a display device comprising the organic electroluminescent display according to any one of claims 1 to 9. panel.
- 3a to 3d are schematic cross-sectional views corresponding to respective steps in a method for fabricating a pixel defining structure according to an embodiment of the present disclosure. detailed description
- An organic electroluminescence display panel provided by an embodiment of the present disclosure the manufacturing method thereof and the display device can not only avoid light leakage and light color interference of the organic electroluminescence display panel, but also improve the luminous efficiency of the organic electroluminescence display panel .
- An organic electroluminescent display panel provided by an embodiment of the present disclosure, as shown in FIG. 1, includes: a substrate substrate 100, a plurality of organic electroluminescent units arranged in a matrix on the substrate substrate 100, and a phase in the phase
- the pixel defining structure is between adjacent organic light emitting layers and is configured to provide total reflection of laterally emitted light from the adjacent organic electroluminescent unit.
- the pixel defining structure 300 includes a first pixel defining layer 310 and a second pixel defining layer 320 stacked on the base substrate 100; the second pixel defining layer 320 is covered by the first One pixel defines an outer side of the layer 310, that is, the second pixel defining layer 320 covers an upper surface of the first pixel defining layer 310 and a side surface thereof facing the organic electroluminescent unit 200 adjacent thereto.
- the refractive index of the second pixel defining layer 320 is greater than the refractive index of the first pixel defining layer 310.
- the pixel defining structure 300 may further include a third on the second pixel defining layer 320 in addition to the second pixel defining layer 320 and the first pixel defining layer 310. a pixel defining layer 330, and a fourth pixel defining layer 340 on the third pixel defining layer 330; similarly, the third pixel defining layer 330 covers the layer 340 of the second pixel defining layer 320 below it covering the third layer below it The upper surface of the pixel defining layer 330 and its side surface facing the organic electroluminescent unit 200 adjacent thereto.
- the refractive index of the third pixel defining layer 330 is greater than the refractive index of the second pixel defining layer 320, and the refractive index of the fourth pixel defining layer 340 is greater than the refractive index of the third pixel defining layer 330.
- the pixel defining structure 300 may further include more layers of pixel defining layers stacked on the fourth pixel defining layer 340 in a similar manner, which is not limited herein.
- the structure comprises at least two layers of pixel defining layers disposed in a stack, and the pixel defining layer away from the substrate substrate is coated on the outer side of the pixel defining layer adjacent to the substrate substrate, and the refractive index of the pixel defining layer away from the substrate substrate is greater than the adjacent The refractive index of the pixel defining layer of the substrate substrate. Therefore, according to the principle that the light is emitted from the optically dense medium to the light-diffusing medium, total reflection occurs.
- the incident angle Lateral light rays larger than the critical angle of total reflection are totally reflected, so that the lateral light of the organic electroluminescent unit that is directed toward the pixel defining structure is reflected to the outside, so that lateral light emitted by the organic electroluminescent unit can be avoided. It is injected into an adjacent organic electroluminescent unit of other colors to avoid light leakage and light color interference of the organic electroluminescent display panel.
- the luminous efficiency of the organic electroluminescent display panel can also be improved.
- the number of layers of the pixel defining layer in the pixel defining structure can be determined according to actual conditions.
- the above-mentioned organic electroluminescent display panel provided by the embodiment of the present disclosure will be described in detail below by taking a pixel-defining structure including only two layers of pixel defining layers as an example.
- the refractive index of the element defining layer is, for example, greater than 1.4 and less than 1.6; accordingly, the refractive index of the second pixel defining layer is, for example, greater than 1.6 and less than 2.0.
- the material of the element defining layer 310 and the material of the second pixel defining layer 320 may each be an organic insulating material. Of course, other materials that can implement the solution of the present disclosure are not limited herein.
- the mechanical insulating material may be, for example, polyimide, polydecyl methacrylate, polyhexafluoropropylene, fluorinated poly(p-nonylbenzene), fluorinated polysilyl ether, polystyrene, polyhexyl decyl acrylate or Polysiloxane, etc.
- a hole injection layer 220, a hole transport layer 230, an organic light-emitting layer 240, an electron transport layer 250, an electron injection layer 260, and a cathode layer 270 are sequentially formed over the anode layer 210 to constitute Electroluminescent unit 200.
- the structure of the organic electroluminescent unit 200 can be known The structure of the organic electroluminescent unit will not be described herein.
- the organic light emitting layer In the above organic electroluminescent display panel provided by the embodiment of the present disclosure, the organic light emitting layer
- the height of 240 relative to the base substrate 100 can be less than the maximum height of the pixel defining structure 300 relative to the substrate substrate.
- the top surface of 300 is in direct contact with cathode layer 270.
- the pixel definition structure provides different total reflections
- the pixel definition structure may also employ a total reflection coating for another implementation of the present disclosure.
- the example also provides a method for fabricating an organic electroluminescence display panel.
- Each of the organic electroluminescent units includes an anode layer, a cathode layer, and an organic light-emitting layer between the anode layer and the cathode layer.
- the pixel defining structure is located between adjacent organic light emitting layers and the pixel defining structure comprises at least two pixel defining layers stacked on the substrate substrate; wherein the pixel defining layer away from the substrate substrate is wrapped adjacent to the substrate.
- the pixel of the base substrate defines an outer side of the layer and has a refractive index greater than a refractive index of a pixel defining layer adjacent to the substrate.
- the pixel defining structure includes at least two layers of pixel defining layers disposed in a stack, and the pixel defining layer away from the substrate substrate is coated on the outer side of the pixel defining layer adjacent to the substrate substrate, and the refractive index of the pixel defining layer away from the substrate substrate is greater than A pixel adjacent to the substrate substrate defines a refractive index of the layer. Therefore, according to the principle that the light is emitted from the optically dense medium to the light-diffusing medium, total reflection occurs.
- the incident angle Lateral light rays larger than the critical angle of total reflection are totally reflected, so that the lateral light of the organic electroluminescent unit that is directed toward the pixel defining structure is reflected to the outside, so that lateral light emitted by the organic electroluminescent unit can be avoided. It is injected into an adjacent organic electroluminescent unit of other colors to avoid light leakage and light color interference of the organic electroluminescent display panel.
- the step of forming a pixel defining structure includes:
- a pixel defining layer is formed in the pixel defining layer film by a patterning process.
- the pixel-defining structure includes a first pixel defining layer on the substrate substrate, and a second pixel defining layer above the first pixel defining layer as an example, and the manufacturing method provided by the embodiment of the present disclosure is described in detail.
- the step of forming a pixel defining structure is described in detail.
- the step of forming a pixel defining structure may include:
- the first pixel defining layer film may be prepared by a coating method.
- the material of the first pixel defining layer film may be an organic insulating material having a refractive index of more than 1.4 and less than 1.6.
- the organic insulating material may be polyimide, polydecyl methacrylate, polyhexafluoropropylene, fluorinated poly(p-nonylbenzene), fluorinated polysilyl ether, polystyrene, polyacrylonitrile ring
- An ester or a polysiloxane or the like is not limited herein.
- the second pixel defining layer film can be prepared by a coating method.
- the material of the second pixel defining layer film may be an organic insulating material having a refractive index of more than 1.6 and less than 2.0.
- the organic insulating material may be polyimide, polydecyl methacrylate, polyhexafluoropropylene, fluorinated poly(p-nonylbenzene), fluorinated polysilyl ether, polystyrene, polyacrylonitrile ring An ester or a polysiloxane or the like is not limited herein.
- the embodiment of the present disclosure further provides a display device, including the above-mentioned organic electroluminescent display panel provided by the embodiment of the present disclosure, which may be: a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame. , navigation, etc. Any product or component that has a display function. Other indispensable components of the display device are understood by those of ordinary skill in the art, and are not to be construed as limiting the disclosure. For the implementation of the display device, reference may be made to the embodiment of the above organic electroluminescent display panel, and the repeated description is omitted.
- the pixel defining structure includes at least two layers of pixel defining layers disposed in a stacked manner, and the pixel defining layer away from the substrate substrate is coated on the outer side of the pixel defining layer adjacent to the substrate substrate, and The refractive index of the pixel defining layer away from the substrate substrate is greater than the refractive index of the pixel defining layer adjacent to the substrate substrate.
- the lateral light emitted by the light-transmitting medium to the light-diffusing medium is irradiated to the pixel structure, the lateral light having an incident angle greater than the critical angle of total reflection is totally reflected, thereby causing the organic electroluminescent unit to
- the lateral light directed to the pixel defining structure is reflected to the outside, so that not only the lateral light emitted by the organic electroluminescent unit can be prevented from entering the adjacent organic electroluminescent unit of other colors, but also the organic electroluminescent display is avoided. Light leakage and light color interference occur in the panel.
- the lateral light emitted by the organic electroluminescent unit is not easily absorbed by the pixel defining structure, the luminous efficiency of the organic electroluminescent display panel can also be improved.
- An organic electroluminescence display panel comprising: a substrate, a plurality of organic electroluminescent units arranged in a matrix on the base substrate, and a pixel defining structure, wherein each of the organic electroluminescences
- the unit includes an anode layer, a cathode layer, and an organic light emitting layer between the anode layer and the cathode layer, the pixel defining structure being located between adjacent organic light emitting layers and configured to be
- the organic electroluminescent display panel according to (1) wherein the pixel defining structure includes a first pixel defining layer and a second pixel defining layer; and the second pixel defining layer is located in the organic light emitting layer Between the adjacent first luminescent layer and the refractive index of the second pixel defining layer is greater than the refractive index of the first pixel defining layer.
- the organic electroluminescence display panel according to any one of (2) to (4), wherein The second pixel defining layer has a refractive index greater than 1.6 and less than 2.0.
- the organic electroluminescence display panel according to any one of (2) to (5), wherein a material of the first pixel defining layer and a material of the second pixel defining layer are both organically insulated material.
- organic electroluminescence display panel wherein the organic insulating material is polyimide, polydecyl methacrylate, polyhexafluoropropylene, fluorinated poly(p-nonylbenzene), Fluorinated polysilyl ether, polystyrene, polyhexyl methacrylate or polysiloxane.
- the organic insulating material is polyimide, polydecyl methacrylate, polyhexafluoropropylene, fluorinated poly(p-nonylbenzene), Fluorinated polysilyl ether, polystyrene, polyhexyl methacrylate or polysiloxane.
- the organic electroluminescence display panel according to any one of (1) to (7), wherein a maximum height of the pixel defining structure with respect to the base substrate is larger than the organic light emitting layer with respect to The height of the base substrate.
- the organic electroluminescence display panel according to any one of (1) to (8) wherein the pixel defining structure is in direct contact with the cathode layer.
- a method for fabricating an organic electroluminescence display panel comprising: forming on a substrate
- the electroluminescent unit includes an anode layer, a cathode layer, and an organic light-emitting layer between the anode layer and the cathode layer; the pixel defining structure is located between adjacent organic light-emitting layers and configured to be opposite thereto
- a pixel defining layer is formed by the pixel defining layer film by a patterning process.
- a display device comprising the organic electroluminescence display panel according to any one of (1) to (9).
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Abstract
An organic electroluminescence display panel and a manufacturing method therefor and a display device. The organic electroluminescence display panel comprises: a base substrate (100), multiple organic electroluminescence units arranged in a matrix form on the base substrate (100), and a pixel defining structure (300). Each organic electroluminescence unit comprises an anode layer (210), a cathode layer (270) and an organic light emitting layer (240) that is located between the anode layer (210) and the cathode layer (270). The pixel defining structure (300) is located between adjacent organic light emitting layers (240) and configured to provide total reflection to light laterally emitted from the organic electroluminescence unit adjacent thereto.
Description
有机电致发光显示面板、 其制作方法及显示装置 技术领域 Organic electroluminescence display panel, manufacturing method thereof and display device
本公开的实施例涉及有机电致发光显示面板、 其制作方法及显示装置。 背景技术 Embodiments of the present disclosure relate to an organic electroluminescence display panel, a method of fabricating the same, and a display device. Background technique
目前， 有机电致发光显示器件 ( Organic Electroluminesence Display , OLED )与传统的液晶显示器件（ Liquid Crystal Display， LCD )相比， 由于 具有响应快、 色域广、 超薄、 能实现柔性化等特点， 已经逐渐成为显示领域 的主流。 At present, organic electroluminescence display devices (OLEDs) have the characteristics of fast response, wide color gamut, ultra-thin, and flexibility, compared with conventional liquid crystal display (LCD). It has gradually become the mainstream of the display field.
OLED显示器件的结构主要包括： 衬底基板， 制作在衬底基板上多个呈 矩阵排列的有机电致发光单元， 以及位于相邻的有机电致发光单元之间的像 素界定层；其中，每个有机电致发光像素结构都包含相对设置的阳极和阴极， 以及位于阳极和阴极之间的发光层。 OLED显示器件的发光是通过阴极中的 电子和阳极中的空穴在发光层中复合时， 激发发光层中的有机材料发光来实 现的。 OLED按照驱动方式可以分为无源驱动和有源驱动两大类， 即直接寻 址和薄膜晶体管（ TFT )矩阵寻址两类。其中，有源驱动也称为有源矩阵 ( AM )， 有源 OLED显示器件中的每个发光单元都由 TFT寻址独立控制。 The structure of the OLED display device mainly includes: a substrate, a plurality of organic electroluminescent units arranged in a matrix on the substrate, and a pixel defining layer between adjacent organic electroluminescent units; wherein each Each of the organic electroluminescent pixel structures comprises an oppositely disposed anode and cathode, and a luminescent layer between the anode and the cathode. The luminescence of the OLED display device is achieved by exciting the organic material in the luminescent layer when the electrons in the cathode and the holes in the anode recombine in the luminescent layer. According to the driving method, OLED can be divided into two categories: passive driving and active driving, namely direct addressing and thin film transistor (TFT) matrix addressing. Among them, active driving is also called active matrix (AM), and each light-emitting unit in the active OLED display device is independently controlled by TFT addressing.
在传统的有源 OLED显示器件中， 像素界定层的材料为透光性材料， 因 此各有机电致发光单元所发出的侧向光经由阴极的反射而射入相邻的其它颜 色的有机电致发光单元中， 导致漏光及光色干扰， 会造成有源 OLED显示器 件的色纯度及对比度下降。 为解决上述问题， 不透光的化合物被用来取代透 光性材料作为像素界定层的材料。 然而， 由于不透光的化合物， 例如色料， 一般为具有较低介电常数的含碳的材料，会导致有源 OLED显示器件的有机 电致发光单元的光电性能下降。 此外， 侧向光也容易被不透光材料吸收， 造 成有源 OLED显示器件的整体发光效率降低。 发明内容
本公开的实施例提供一种有机电致发光显示面板， 包括： 衬底基板， 位 于所述衬底基板上呈矩阵排列的多个有机电致发光单元， 以及像素界定结 构， 其中， 每一有机电致发光单元包括阳极层、 阴极层以及位于所述阳极层 和所述阴极层之间的有机发光层， 所述像素界定结构位于相邻的有机发光层 射。 In a conventional active OLED display device, the material of the pixel defining layer is a light transmissive material, so that the lateral light emitted by each organic electroluminescent unit is incident on the organic electrochemistry of the adjacent other color via the reflection of the cathode. In the light-emitting unit, light leakage and light color interference are caused, which may cause color purity and contrast of the active OLED display device to decrease. In order to solve the above problem, an opaque compound is used instead of the light transmissive material as a material for the pixel defining layer. However, since an opaque compound, such as a colorant, is generally a carbonaceous material having a lower dielectric constant, the photoelectric performance of the organic electroluminescent unit of the active OLED display device is degraded. In addition, lateral light is also easily absorbed by the opaque material, resulting in a decrease in overall luminous efficiency of the active OLED display device. Summary of the invention An embodiment of the present disclosure provides an organic electroluminescence display panel, including: a substrate, a plurality of organic electroluminescent units arranged in a matrix on the substrate, and a pixel defining structure, wherein each has The electroluminescent unit includes an anode layer, a cathode layer, and an organic light-emitting layer between the anode layer and the cathode layer, the pixel defining structure being located adjacent to the organic light-emitting layer.
本公开的另一实施例提供一种有机电致发光显示面板的制作方法， 包 元， 其中每一有机电致发光单元包括阳极层、 阴极层以及位于所述阳极层和 所述阴极层之间的有机发光层； 所述像素界定结构位于相邻的有机发光层之 本公开的又一实施例提供一种显示装置， 包括如权利要求 1至 9中任一 项所述的有机电致发光显示面板。 附图说明 Another embodiment of the present disclosure provides a method of fabricating an organic electroluminescence display panel, wherein each of the organic electroluminescent units includes an anode layer, a cathode layer, and between the anode layer and the cathode layer Another embodiment of the present disclosure in which the pixel defining structure is located adjacent to the adjacent organic light emitting layer provides a display device comprising the organic electroluminescent display according to any one of claims 1 to 9. panel. DRAWINGS
为了更清楚地说明本公开的实施例的技术方案， 下面将对实施例或相关 技术描述中所需要使用的附图作简单地介绍， 显而易见地， 下面描述中的附 图仅仅涉及本公开的一些实施例， 并非对本公开的限制。 意图； 意图； In order to more clearly explain the technical solutions of the embodiments of the present disclosure, the drawings to be used in the embodiments or the related art description will be briefly described below. Obviously, the drawings in the following description relate only to some of the present disclosure. The embodiments are not intended to limit the disclosure. Intention
图 3a至图 3d分别为本公开的实施例提供的像素界定结构的制作方法中 各步骤对应的截面结构示意图。 具体实施方式 3a to 3d are schematic cross-sectional views corresponding to respective steps in a method for fabricating a pixel defining structure according to an embodiment of the present disclosure. detailed description
下面将结合附图， 对本公开的实施例中的技术方案进行清楚、 完整地描 述， 显然， 所描述的实施例仅仅是本公开一部分实施例， 而不是全部的实施 例。 基于本公开中的实施例， 本领域普通技术人员在没有做出创造性劳动前 提下所获得的所有其他实施例， 都属于本公开保护的范围。
应注意的是， 图中示出的特征不是必须按照比例绘制。 省略已知材料、 组件和工艺技术的描述， 从而不使本公开的示例实施例模糊。 示例仅旨在有 利于理解本公开示例实施例的实施， 以及进一步使本领域技术人员能够实施 示例实施例。 因而， 示例不应被理解为对本公开示例实施例的范围的限制。 The technical solutions in the embodiments of the present disclosure will be clearly and completely described in the following with reference to the accompanying drawings. It is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without departing from the inventive scope are the scope of the disclosure. It should be noted that the features shown in the figures are not necessarily drawn to scale. Descriptions of well-known materials, components, and process technologies are omitted so as not to obscure the example embodiments of the present disclosure. The examples are only intended to facilitate an understanding of the implementation of the example embodiments of the present disclosure, and to enable those skilled in the art to practice the example embodiments. Therefore, the examples should not be construed as limiting the scope of the example embodiments of the present disclosure.
本公开的实施例提供的一种有机电致发光显示面板， 其制作方法及显示 装置， 不仅可以避免有机电致发光显示面板发生漏光和光色干扰， 并且可以 提高有机电致发光显示面板的发光效率。 An organic electroluminescence display panel provided by an embodiment of the present disclosure, the manufacturing method thereof and the display device can not only avoid light leakage and light color interference of the organic electroluminescence display panel, but also improve the luminous efficiency of the organic electroluminescence display panel .
本公开的实施例提供的一种有机电致发光显示面板，如图 1所示， 包括： 衬底基板 100， 位于衬底基板 100上呈矩阵排列的多个有机电致发光单元， 以及位于相邻的有机电致发光单元之间的像素界定结构 300; 每一有机电致 发光单元包括阳极层、 阴极层以及位于所述阳极层和所述阴极层之间的有机 发光层。 所述像素界定结构位于相邻的有机发光层之间且构造为对与其相邻 的所述有机电致发光单元侧向射出的光提供全反射。 An organic electroluminescent display panel provided by an embodiment of the present disclosure, as shown in FIG. 1, includes: a substrate substrate 100, a plurality of organic electroluminescent units arranged in a matrix on the substrate substrate 100, and a phase in the phase A pixel defining structure 300 between adjacent organic electroluminescent units; each of the organic electroluminescent units includes an anode layer, a cathode layer, and an organic light emitting layer between the anode layer and the cathode layer. The pixel defining structure is between adjacent organic light emitting layers and is configured to provide total reflection of laterally emitted light from the adjacent organic electroluminescent unit.
在一个示例中， 如图 1所示， 该像素界定结构 300包括在衬底基板 100 上层叠设置的第一像素界定层 310和第二像素界定层 320; 第二像素界定层 320包覆于第一像素界定层 310的外侧， 即， 所述第二像素界定层 320覆盖 所述第一像素界定层 310 的上表面和其面对与之相邻的有机电致发光单元 200的侧表面。 第二像素界定层 320的折射率大于第一像素界定层 310的折 射率。 In one example, as shown in FIG. 1 , the pixel defining structure 300 includes a first pixel defining layer 310 and a second pixel defining layer 320 stacked on the base substrate 100; the second pixel defining layer 320 is covered by the first One pixel defines an outer side of the layer 310, that is, the second pixel defining layer 320 covers an upper surface of the first pixel defining layer 310 and a side surface thereof facing the organic electroluminescent unit 200 adjacent thereto. The refractive index of the second pixel defining layer 320 is greater than the refractive index of the first pixel defining layer 310.
在另一示例中， 如图 2所示， 像素界定结构 300除了包括所述第二像素 界定层 320和第一像素界定层 310之外，还可以包括位于第二像素界定层 320 上的第三像素界定层 330， 以及位于第三像素界定层 330上的第四像素界定 层 340; 类似地， 第三像素界定层 330覆盖其下方的第二像素界定层 320的 层 340覆盖其下方的第三像素界定层 330的上表面和其面对与之相邻的有机 电致发光单元 200的侧表面。 第三像素界定层 330的折射率大于第二像素界 定层 320的折射率， 第四像素界定层 340的折射率大于第三像素界定层 330 的折射率。 当然， 像素界定结构 300还可以包括位于第四像素界定层 340上 的以类似方式层叠的更多层像素界定层， 在此不做限定。
构包括层叠设置的至少两层像素界定层， 且远离衬底基板的像素界定层包覆 于邻近衬底基板的像素界定层的外侧， 且远离衬底基板的像素界定层的折射 率大于邻近所述衬底基板的像素界定层的折射率。 因此， 根据光线由光密介 质射向光疏介质会发生全反射的原理， 当上述有机电致发光显示面板中的有 机电致发光单元所发出的侧向光照射到该像素结构时， 入射角度大于全反射 的临界角度的侧向光线会发生全反射， 从而将有机电致发光单元射向像素定 义结构的侧向光反射至外界， 从而不仅可以避免有机电致发光单元所发出的 侧向光射入到相邻的其它颜色的有机电致发光单元中， 避免有机电致发光显 示面板发生漏光及光色干扰的现象。 并且， 由于有机电致发光单元所发出的 侧向光不容易被该像素界定结构吸收， 因此还可以提高有机电致发光显示面 板的发光效率。 中像素界定层越多，该机电致发光显示面板防漏光及防光色干扰的性能越强， 但是相对的制作工艺也复杂。 像素界定结构中像素界定层的层数可以根据实 际情况决定。 In another example, as shown in FIG. 2, the pixel defining structure 300 may further include a third on the second pixel defining layer 320 in addition to the second pixel defining layer 320 and the first pixel defining layer 310. a pixel defining layer 330, and a fourth pixel defining layer 340 on the third pixel defining layer 330; similarly, the third pixel defining layer 330 covers the layer 340 of the second pixel defining layer 320 below it covering the third layer below it The upper surface of the pixel defining layer 330 and its side surface facing the organic electroluminescent unit 200 adjacent thereto. The refractive index of the third pixel defining layer 330 is greater than the refractive index of the second pixel defining layer 320, and the refractive index of the fourth pixel defining layer 340 is greater than the refractive index of the third pixel defining layer 330. Of course, the pixel defining structure 300 may further include more layers of pixel defining layers stacked on the fourth pixel defining layer 340 in a similar manner, which is not limited herein. The structure comprises at least two layers of pixel defining layers disposed in a stack, and the pixel defining layer away from the substrate substrate is coated on the outer side of the pixel defining layer adjacent to the substrate substrate, and the refractive index of the pixel defining layer away from the substrate substrate is greater than the adjacent The refractive index of the pixel defining layer of the substrate substrate. Therefore, according to the principle that the light is emitted from the optically dense medium to the light-diffusing medium, total reflection occurs. When the lateral light emitted by the organic electroluminescent unit in the organic electroluminescent display panel is irradiated to the pixel structure, the incident angle Lateral light rays larger than the critical angle of total reflection are totally reflected, so that the lateral light of the organic electroluminescent unit that is directed toward the pixel defining structure is reflected to the outside, so that lateral light emitted by the organic electroluminescent unit can be avoided. It is injected into an adjacent organic electroluminescent unit of other colors to avoid light leakage and light color interference of the organic electroluminescent display panel. Moreover, since the lateral light emitted by the organic electroluminescent unit is not easily absorbed by the pixel defining structure, the luminous efficiency of the organic electroluminescent display panel can also be improved. The more the pixel defining layer is, the stronger the performance of the electroluminescent display panel for preventing light leakage and light color interference, but the relative manufacturing process is also complicated. The number of layers of the pixel defining layer in the pixel defining structure can be determined according to actual conditions.
下面以像素界定结构只包括两层像素界定层为例， 来详细的说明本公开 的实施例提供的上述有机电致发光显示面板。 素界定层的折射率例如大于 1.4且小于 1.6; 相应地， 第二像素界定层的折射 率例如大于 1.6且小于 2.0。 素界定层 310的材料和第二像素界定层 320的材料均可以为有机绝缘材料， 当然也可以为能够实现本公开方案的其他材料， 在此不做限定。 机绝缘材料可以例如为聚酰亚胺、 聚曱基丙烯酸曱酯、 聚六氟丙烯、 氟化聚 对二曱苯、 氟化聚硅基醚、 聚苯乙烯、 聚曱基丙烯酸环己酯或聚硅氧烷等。 图 1和图 2所示， 在阳极层 210上方依次形成有空穴注入层 220、 空穴传输 层 230、 有机发光层 240、 电子传输层 250、 电子注入层 260和阴极层 270， 以构成有机电致发光单元 200。 有机电致发光单元 200的结构可釆用已知的
有机电致发光单元的结构， 在此不再赘述。 The above-mentioned organic electroluminescent display panel provided by the embodiment of the present disclosure will be described in detail below by taking a pixel-defining structure including only two layers of pixel defining layers as an example. The refractive index of the element defining layer is, for example, greater than 1.4 and less than 1.6; accordingly, the refractive index of the second pixel defining layer is, for example, greater than 1.6 and less than 2.0. The material of the element defining layer 310 and the material of the second pixel defining layer 320 may each be an organic insulating material. Of course, other materials that can implement the solution of the present disclosure are not limited herein. The mechanical insulating material may be, for example, polyimide, polydecyl methacrylate, polyhexafluoropropylene, fluorinated poly(p-nonylbenzene), fluorinated polysilyl ether, polystyrene, polyhexyl decyl acrylate or Polysiloxane, etc. As shown in FIG. 1 and FIG. 2, a hole injection layer 220, a hole transport layer 230, an organic light-emitting layer 240, an electron transport layer 250, an electron injection layer 260, and a cathode layer 270 are sequentially formed over the anode layer 210 to constitute Electroluminescent unit 200. The structure of the organic electroluminescent unit 200 can be known The structure of the organic electroluminescent unit will not be described herein.
在本公开的实施例提供的上述有机电致发光显示面板中， 有机发光层 In the above organic electroluminescent display panel provided by the embodiment of the present disclosure, the organic light emitting layer
240相对于所述衬底基板 100的高度可小于所述像素界定结构 300相对于所 述衬底基板的最大高度。 The height of 240 relative to the base substrate 100 can be less than the maximum height of the pixel defining structure 300 relative to the substrate substrate.
300的顶表面与阴极层 270直接接触。 The top surface of 300 is in direct contact with cathode layer 270.
本领域技术人员应理解， 尽管在上述实施例中， 像素定义结构釆用不同 提供全反射， 但是在其他的实施例中， 像素定义结构也可釆用全反射涂层以 本公开的另一实施例还提供了一种有机电致发光显示面板的制作方法， 元。 每一有机电致发光单元包括阳极层、 阴极层以及位于所述阳极层和所述 阴极层之间的有机发光层。 所述像素界定结构位于相邻的有机发光层之间且 像素界定结构包括在所述衬底基板上层叠设置的至少两层像素界定层； 其中，远离衬底基板的像素界定层包覆于邻近衬底基板的像素界定层的外侧， 且折射率大于邻近衬底基板的像素界定层的折射率。 像素界定结构包括层叠设置的至少两层像素界定层， 且远离衬底基板的像素 界定层包覆于邻近衬底基板的像素界定层的外侧， 且远离衬底基板的像素界 定层的折射率大于邻近所述衬底基板的像素界定层的折射率。 因此， 根据光 线由光密介质射向光疏介质会发生全反射的原理， 当上述有机电致发光显示 面板中的有机电致发光单元所发出的侧向光照射到该像素结构时， 入射角度 大于全反射的临界角度的侧向光线会发生全反射， 从而将有机电致发光单元 射向像素定义结构的侧向光反射至外界， 从而不仅可以避免有机电致发光单 元所发出的侧向光射入到相邻的其它颜色的有机电致发光单元中， 避免有机 电致发光显示面板发生漏光及光色干扰的现象。 并且， 由于有机电致发光单 元所发出的侧向光不容易被该像素界定结构吸收， 因此还可以提高有机电致 发光显示面板的发光效率。
例如， 本公开的实施例提供的上述制作方法中， 形成像素界定结构的步 骤包括： It will be understood by those skilled in the art that although in the above embodiments, the pixel definition structure provides different total reflections, in other embodiments, the pixel definition structure may also employ a total reflection coating for another implementation of the present disclosure. The example also provides a method for fabricating an organic electroluminescence display panel. Each of the organic electroluminescent units includes an anode layer, a cathode layer, and an organic light-emitting layer between the anode layer and the cathode layer. The pixel defining structure is located between adjacent organic light emitting layers and the pixel defining structure comprises at least two pixel defining layers stacked on the substrate substrate; wherein the pixel defining layer away from the substrate substrate is wrapped adjacent to the substrate The pixel of the base substrate defines an outer side of the layer and has a refractive index greater than a refractive index of a pixel defining layer adjacent to the substrate. The pixel defining structure includes at least two layers of pixel defining layers disposed in a stack, and the pixel defining layer away from the substrate substrate is coated on the outer side of the pixel defining layer adjacent to the substrate substrate, and the refractive index of the pixel defining layer away from the substrate substrate is greater than A pixel adjacent to the substrate substrate defines a refractive index of the layer. Therefore, according to the principle that the light is emitted from the optically dense medium to the light-diffusing medium, total reflection occurs. When the lateral light emitted by the organic electroluminescent unit in the organic electroluminescent display panel is irradiated to the pixel structure, the incident angle Lateral light rays larger than the critical angle of total reflection are totally reflected, so that the lateral light of the organic electroluminescent unit that is directed toward the pixel defining structure is reflected to the outside, so that lateral light emitted by the organic electroluminescent unit can be avoided. It is injected into an adjacent organic electroluminescent unit of other colors to avoid light leakage and light color interference of the organic electroluminescent display panel. Moreover, since the lateral light emitted by the organic electroluminescent unit is not easily absorbed by the pixel defining structure, the luminous efficiency of the organic electroluminescent display panel can also be improved. For example, in the above manufacturing method provided by the embodiment of the present disclosure, the step of forming a pixel defining structure includes:
在衬底基板上每沉积一层像素界定层薄膜之后， 均釆用一次构图工艺在 像素界定层薄膜中形成一像素界定层。 After each layer of the pixel defining layer film is deposited on the substrate, a pixel defining layer is formed in the pixel defining layer film by a patterning process.
例如， 下面以像素界定结构包括位于衬底基板上的第一像素界定层， 以 及位于第一像素界定层之上的第二像素界定层为例， 详细的说明本公开的实 施例提供的制作方法中形成像素界定结构的步骤。 For example, the pixel-defining structure includes a first pixel defining layer on the substrate substrate, and a second pixel defining layer above the first pixel defining layer as an example, and the manufacturing method provided by the embodiment of the present disclosure is described in detail. The step of forming a pixel defining structure.
形成像素界定结构的步骤可以包括： The step of forming a pixel defining structure may include:
( 1 )在衬底基板 100上沉积第一像素界定层 310薄膜， 如图 3a所示； 可以釆用涂布的方法制备第一像素界定层薄膜。 第一像素界定层薄膜的 材料可以为折射率为大于 1.4且小于 1.6的有机绝缘材料。进一步地，有机绝 缘材料可以为聚酰亚胺、 聚曱基丙烯酸曱酯、 聚六氟丙烯、 氟化聚对二曱苯、 氟化聚硅基醚、 聚苯乙烯、 聚曱基丙烯酸环己酯或聚硅氧烷等， 在此不做限 定。 (1) depositing a first pixel defining layer 310 film on the base substrate 100, as shown in Fig. 3a; the first pixel defining layer film may be prepared by a coating method. The material of the first pixel defining layer film may be an organic insulating material having a refractive index of more than 1.4 and less than 1.6. Further, the organic insulating material may be polyimide, polydecyl methacrylate, polyhexafluoropropylene, fluorinated poly(p-nonylbenzene), fluorinated polysilyl ether, polystyrene, polyacrylonitrile ring An ester or a polysiloxane or the like is not limited herein.
( 2 )通过一次构图工艺在第一像素界定层薄膜中形成第一像素界定层 (2) forming a first pixel defining layer in the first pixel defining layer film by one patterning process
310， 如图 3b所示。 310, as shown in Figure 3b.
( 3 )在第一像素界定层 310上沉积第二像素界定层 320薄膜， 如图 3c 所示； (3) depositing a second pixel defining layer 320 film on the first pixel defining layer 310, as shown in FIG. 3c;
可以釆用涂布的方法制备第二像素界定层薄膜。 第二像素界定层薄膜的 材料可以为折射率为大于 1.6且小于 2.0的有机绝缘材料。进一步地，有机绝 缘材料可以为聚酰亚胺、 聚曱基丙烯酸曱酯、 聚六氟丙烯、 氟化聚对二曱苯、 氟化聚硅基醚、 聚苯乙烯、 聚曱基丙烯酸环己酯或聚硅氧烷等， 在此不做限 定。 The second pixel defining layer film can be prepared by a coating method. The material of the second pixel defining layer film may be an organic insulating material having a refractive index of more than 1.6 and less than 2.0. Further, the organic insulating material may be polyimide, polydecyl methacrylate, polyhexafluoropropylene, fluorinated poly(p-nonylbenzene), fluorinated polysilyl ether, polystyrene, polyacrylonitrile ring An ester or a polysiloxane or the like is not limited herein.
( 4 )通过一次构图工艺在第二像素界定层薄膜中形成第二像素界定层 320的图形， 如图 3d所示。 (4) forming a pattern of the second pixel defining layer 320 in the second pixel defining layer film by one patterning process, as shown in Fig. 3d.
经过上述步骤（1 )至（4 )之后， 得到本公开的实施例提供的像素界定 结构。 After the above steps (1) to (4), the pixel defining structure provided by the embodiment of the present disclosure is obtained.
本公开的实施例还提供了一种显示装置， 包括本公开的实施例提供的上 述有机电致发光显示面板， 该显示装置可以为： 手机、 平板电脑、 电视机、 显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
对于该显示装置的其它必不可少的组成部分均为本领域的普通技术人员应该 理解具有的， 在此不做赞述， 也不应作为对本公开的限制。 该显示装置的实 施可以参见上述有机电致发光显示面板的实施例， 重复之处不再赘述。 The embodiment of the present disclosure further provides a display device, including the above-mentioned organic electroluminescent display panel provided by the embodiment of the present disclosure, which may be: a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame. , navigation, etc. Any product or component that has a display function. Other indispensable components of the display device are understood by those of ordinary skill in the art, and are not to be construed as limiting the disclosure. For the implementation of the display device, reference may be made to the embodiment of the above organic electroluminescent display panel, and the repeated description is omitted.
本公开的实施例提供的显示装置中， 由于像素界定结构包括层叠设置的 至少两层像素界定层， 且远离衬底基板的像素界定层包覆于邻近衬底基板的 像素界定层的外侧， 且远离衬底基板的像素界定层的折射率大于邻近所述衬 底基板的像素界定层的折射率。 因此， 根据光线由光密介质射向光疏介质会 发出的侧向光照射到该像素结构时， 入射角度大于全反射的临界角度的侧向 光线会发生全反射， 从而将有机电致发光单元射向像素定义结构的侧向光反 射至外界， 从而不仅可以避免有机电致发光单元所发出的侧向光射入到相邻 的其它颜色的有机电致发光单元中， 避免有机电致发光显示面板发生漏光及 光色干扰的现象。 并且， 由于有机电致发光单元所发出的侧向光不容易被该 像素界定结构吸收， 因此还可以提高有机电致发光显示面板的发光效率。 In the display device provided by the embodiment of the present disclosure, the pixel defining structure includes at least two layers of pixel defining layers disposed in a stacked manner, and the pixel defining layer away from the substrate substrate is coated on the outer side of the pixel defining layer adjacent to the substrate substrate, and The refractive index of the pixel defining layer away from the substrate substrate is greater than the refractive index of the pixel defining layer adjacent to the substrate substrate. Therefore, when the lateral light emitted by the light-transmitting medium to the light-diffusing medium is irradiated to the pixel structure, the lateral light having an incident angle greater than the critical angle of total reflection is totally reflected, thereby causing the organic electroluminescent unit to The lateral light directed to the pixel defining structure is reflected to the outside, so that not only the lateral light emitted by the organic electroluminescent unit can be prevented from entering the adjacent organic electroluminescent unit of other colors, but also the organic electroluminescent display is avoided. Light leakage and light color interference occur in the panel. Moreover, since the lateral light emitted by the organic electroluminescent unit is not easily absorbed by the pixel defining structure, the luminous efficiency of the organic electroluminescent display panel can also be improved.
( 1 )一种有机电致发光显示面板， 包括： 衬底基板， 位于所述衬底基板 上呈矩阵排列的多个有机电致发光单元， 以及像素界定结构， 其中， 每一有 机电致发光单元包括阳极层、 阴极层以及位于所述阳极层和所述阴极层之间 的有机发光层， 所述像素界定结构位于相邻的有机发光层之间且构造为对与 (1) An organic electroluminescence display panel comprising: a substrate, a plurality of organic electroluminescent units arranged in a matrix on the base substrate, and a pixel defining structure, wherein each of the organic electroluminescences The unit includes an anode layer, a cathode layer, and an organic light emitting layer between the anode layer and the cathode layer, the pixel defining structure being located between adjacent organic light emitting layers and configured to be
( 2 )根据 ( 1 )所述的有机电致发光显示面板， 其中， 所述像素界定结 构包括第一像素界定层和第二像素限定层； 所述第二像素限定层位于所述有 机发光层与相邻的所述第一发光层之间， 且第二像素限定层的折射率大于第 一像素界定层的折射率。 The organic electroluminescent display panel according to (1), wherein the pixel defining structure includes a first pixel defining layer and a second pixel defining layer; and the second pixel defining layer is located in the organic light emitting layer Between the adjacent first luminescent layer and the refractive index of the second pixel defining layer is greater than the refractive index of the first pixel defining layer.
( 3 )根据 ( 2 )所述的有机电致发光显示面板， 其中， 所述第二像素界 定层包覆于第一像素界定层的外侧。 (3) The organic electroluminescence display panel according to (2), wherein the second pixel defining layer is coated on an outer side of the first pixel defining layer.
( 4 )根据（2 )或（3 )所述的有机电致发光显示面板， 其中， 所述第一 像素界定层的折射率大于 1.4且小于 1.6。 The organic electroluminescence display panel according to (2) or (3), wherein the refractive index of the first pixel defining layer is greater than 1.4 and less than 1.6.
( 5 )根据（2 )至（4 ) 中任一项所述的有机电致发光显示面板， 其中，
所述第二像素界定层的折射率大于 1.6且小于 2.0。 The organic electroluminescence display panel according to any one of (2) to (4), wherein The second pixel defining layer has a refractive index greater than 1.6 and less than 2.0.
(6)根据（2)至（5) 中任一项所述的有机电致发光显示面板， 其中， 所述第一像素界定层的材料和所述第二像素界定层的材料均为有机绝缘材 料。 The organic electroluminescence display panel according to any one of (2) to (5), wherein a material of the first pixel defining layer and a material of the second pixel defining layer are both organically insulated material.
(7)根据 (6)所述的有机电致发光显示面板， 其中， 所述有机绝缘材 料为聚酰亚胺、 聚曱基丙烯酸曱酯、 聚六氟丙烯、 氟化聚对二曱苯、 氟化聚 硅基醚、 聚苯乙烯、 聚曱基丙烯酸环己酯或聚硅氧烷。 (7) The organic electroluminescence display panel according to (6), wherein the organic insulating material is polyimide, polydecyl methacrylate, polyhexafluoropropylene, fluorinated poly(p-nonylbenzene), Fluorinated polysilyl ether, polystyrene, polyhexyl methacrylate or polysiloxane.
(8)根据（1)至（7) 中任一项所述的有机电致发光显示面板， 其中， 所述像素定义结构相对于所述衬底基板的最大高度大于所述有机发光层相对 于所述衬底基板的高度。 The organic electroluminescence display panel according to any one of (1) to (7), wherein a maximum height of the pixel defining structure with respect to the base substrate is larger than the organic light emitting layer with respect to The height of the base substrate.
(9)根据（1)至（8) 中任一项所述的有机电致发光显示面板， 其中， 所述像素定义结构与所述阴极层直接接触。 The organic electroluminescence display panel according to any one of (1) to (8) wherein the pixel defining structure is in direct contact with the cathode layer.
( 10)—种有机电致发光显示面板的制作方法， 包括： 在衬底基板上形 (10) A method for fabricating an organic electroluminescence display panel, comprising: forming on a substrate
致发光单元包括阳极层、 阴极层以及位于所述阳极层和所述阴极层之间的有 机发光层； 所述像素界定结构位于相邻的有机发光层之间且构造为对与其相 The electroluminescent unit includes an anode layer, a cathode layer, and an organic light-emitting layer between the anode layer and the cathode layer; the pixel defining structure is located between adjacent organic light-emitting layers and configured to be opposite thereto
( 11 )根据（10)所述的制作方法， 其中， 形成所述像素界定结构的步 骤包括： (11) The manufacturing method according to (10), wherein the forming the pixel defining structure comprises:
在衬底基板上每沉积一层像素界定层薄膜之后， 均釆用一次构图工艺由 所述像素界定层薄膜形成一像素界定层。 After each layer of the pixel defining layer film is deposited on the substrate, a pixel defining layer is formed by the pixel defining layer film by a patterning process.
( 12 )一种显示装置， 包括根据（ 1 )至（ 9 ) 中任一项所述的有机电致 发光显示面板。 (12) A display device comprising the organic electroluminescence display panel according to any one of (1) to (9).
虽然上文中已经用一般性说明及具体实施方式， 对本公开作了详尽的描 述， 但在本公开基础上， 可以对之作一些修改或改进， 这对本领域技术人员 而言是显而易见的。 因此， 在不偏离本公开精神的基础上所做的这些修改或 改进， 均属于本公开要求保护的范围。
本申请要求于 2014年 3月 27日递交的中国专利申请第 201410120882.5 号的优先权， 在此全文引用上述中国专利申请公开的内容以作为本申请的一 部分。
Although the present disclosure has been described in detail with reference to the preferred embodiments of the present invention, it will be apparent to those skilled in the art Therefore, such modifications or improvements made without departing from the spirit of the present disclosure are intended to fall within the scope of the present disclosure. The present application claims the priority of the Chinese Patent Application No. 201410120882.5 filed on March 27, 2014, the entire disclosure of which is hereby incorporated by reference.
Claims
1、 一种有机电致发光显示面板， 包括： 衬底基板， 位于所述衬底基板 上呈矩阵排列的多个有机电致发光单元， 以及像素界定结构， 其中， 每一有 机电致发光单元包括阳极层、 阴极层以及位于所述阳极层和所述阴极层之间 的有机发光层， 所述像素界定结构位于相邻的有机发光层之间且构造为对与 1. An organic electroluminescent display panel, including: a substrate, a plurality of organic electroluminescent units arranged in a matrix on the substrate, and a pixel defining structure, wherein each organic electroluminescent unit It includes an anode layer, a cathode layer and an organic light-emitting layer located between the anode layer and the cathode layer, and the pixel defining structure is located between adjacent organic light-emitting layers and is configured to be opposite to
2、 如权利要求 1所述的有机电致发光显示面板， 其中， 所述像素界定结 构包括第一像素界定层和第二像素限定层； 所述第二像素限定层位于所述有 机发光层与相邻的所述第一发光层之间， 且第二像素限定层的折射率大于第 一像素界定层的折射率。 2. The organic electroluminescent display panel of claim 1, wherein the pixel defining structure includes a first pixel defining layer and a second pixel defining layer; the second pixel defining layer is located between the organic light emitting layer and Between the adjacent first light-emitting layers, the refractive index of the second pixel defining layer is greater than the refractive index of the first pixel defining layer.
3、如权利要求 2所述的有机电致发光显示面板， 其中， 所述第二像素界 定层包覆于第一像素界定层的外侧。 3. The organic electroluminescent display panel according to claim 2, wherein the second pixel defining layer covers the outside of the first pixel defining layer.
4、如权利要求 2或 3所述的有机电致发光显示面板， 其中， 所述第一像 素界定层的折射率大于 1.4且小于 1.6。 4. The organic electroluminescent display panel according to claim 2 or 3, wherein the refractive index of the first pixel defining layer is greater than 1.4 and less than 1.6.
5、如权利要求 2至 4中任一项所述的有机电致发光显示面板， 其中， 所 述第二像素界定层的折射率大于 1.6且小于 2.0。 5. The organic electroluminescent display panel according to any one of claims 2 to 4, wherein the refractive index of the second pixel defining layer is greater than 1.6 and less than 2.0.
6、 如权利要求 2至 5中任一项所述的有机电致发光显示面板， 其中， 所 述第一像素界定层的材料和所述第二像素界定层的材料均为有机绝缘材料。 6. The organic electroluminescent display panel according to any one of claims 2 to 5, wherein the material of the first pixel defining layer and the material of the second pixel defining layer are both organic insulating materials.
7、 如权利要求 6所述的有机电致发光显示面板， 其中， 所述有机绝缘材 料为聚酰亚胺、 聚曱基丙烯酸曱酯、 聚六氟丙烯、 氟化聚对二曱苯、 氟化聚 硅基醚、 聚苯乙烯、 聚曱基丙烯酸环己酯或聚硅氧烷。 7. The organic electroluminescent display panel according to claim 6, wherein the organic insulating material is polyimide, polymethylmethacrylate, polyhexafluoropropylene, fluorinated polyparaxylene, fluorine Polysilyl ether, polystyrene, polycyclohexylmethacrylate or polysiloxane.
8、 如权利要求 1至 7中任一项所述的有机电致发光显示面板， 其中， 所 述像素定义结构相对于所述衬底基板的最大高度大于所述有机发光层相对于 所述衬底基板的高度。 8. The organic electroluminescent display panel according to any one of claims 1 to 7, wherein the maximum height of the pixel definition structure relative to the base substrate is greater than the height of the organic light-emitting layer relative to the substrate. The height of the base plate.
9、 如权利要求 1至 8中任一项所述的有机电致发光显示面板， 其中， 所 述像素定义结构与所述阴极层直接接触。
9. The organic electroluminescent display panel according to any one of claims 1 to 8, wherein the pixel definition structure is in direct contact with the cathode layer.
10、 一种有机电致发光显示面板的制作方法， 包括： 在衬底基板上形成 10. A method for manufacturing an organic electroluminescent display panel, including: forming a
发光单元包括阳极层、 阴极层以及位于所述阳极层和所述阴极层之间的有机 发光层； 所述像素界定结构位于相邻的有机发光层之间且构造为对与其相邻 的所述有机电致发光单元侧向射出的光提供全反射。 The light-emitting unit includes an anode layer, a cathode layer, and an organic light-emitting layer located between the anode layer and the cathode layer; the pixel defining structure is located between adjacent organic light-emitting layers and is configured to define the adjacent organic light-emitting layer. The light emitted sideways from the organic electroluminescent unit provides total reflection.
11、 如权利要求 10所述的制作方法， 其中， 形成所述像素界定结构的步 骤包括： 11. The manufacturing method according to claim 10, wherein the step of forming the pixel defining structure includes:
在衬底基板上每沉积一层像素界定层薄膜之后， 均釆用一次构图工艺由 所述像素界定层薄膜形成一像素界定层。 After each layer of pixel defining layer film is deposited on the base substrate, a patterning process is performed to form a pixel defining layer from the pixel defining layer film.
12、 一种显示装置， 包括如权利要求 1至 9中任一项所述的有机电致发 光显示面板。
12. A display device, comprising the organic electroluminescent display panel according to any one of claims 1 to 9.
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| CN203760480U (en) * | 2014-03-27 | 2014-08-06 | 京东方科技集团股份有限公司 | Organic electroluminescence display panel and display device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108010954A (en) * | 2017-12-15 | 2018-05-08 | 京东方科技集团股份有限公司 | A kind of display base plate and preparation method thereof, display panel |
| CN108010954B (en) * | 2017-12-15 | 2023-12-05 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and display panel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103915482A (en) | 2014-07-09 |
| CN103915482B (en) | 2017-03-01 |
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