WO2015188524A1 - 有机发光二极管显示面板和显示装置 - Google Patents

有机发光二极管显示面板和显示装置 Download PDF

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WO2015188524A1
WO2015188524A1 PCT/CN2014/087737 CN2014087737W WO2015188524A1 WO 2015188524 A1 WO2015188524 A1 WO 2015188524A1 CN 2014087737 W CN2014087737 W CN 2014087737W WO 2015188524 A1 WO2015188524 A1 WO 2015188524A1
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light
display panel
layer
light absorbing
panel according
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PCT/CN2014/087737
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English (en)
French (fr)
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宋莹莹
崔颖
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京东方科技集团股份有限公司
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Priority to US14/654,040 priority Critical patent/US9698383B2/en
Publication of WO2015188524A1 publication Critical patent/WO2015188524A1/zh

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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
    • H10K59/80—Constructional details
    • H10K59/875—Arrangements for extracting light from the devices
    • H10K59/879—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
    • 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
    • H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
    • 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
    • H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
    • 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
    • H10K59/17—Passive-matrix OLED displays
    • H10K59/173—Passive-matrix OLED displays comprising banks or shadow masks
    • 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
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K59/8792—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. black layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/302—Details of OLEDs of OLED structures
    • H10K2102/3023—Direction of light emission
    • H10K2102/3026—Top emission
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/351—Thickness
    • 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
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/841—Self-supporting sealing arrangements
    • 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

Definitions

  • the present invention belongs to the field of display technologies, and in particular, to an organic light emitting diode display panel and a display device.
  • ambient light is reflected on the surface of the light emitting layer and the metal electrode. Under the condition that the external background light is strong, the part of the reflected light entering the observer's eyes will significantly reduce the contrast of the display device, affecting the display effect of the display.
  • FIG. 1 is a schematic structural view of a display panel of a top emission type organic light emitting diode display device in the prior art, including a first substrate 1 and a second substrate 11 disposed opposite each other; the first substrate 1 includes a plurality of pixel regions 12 and located The pixel between the pixel regions 12 defines a region 13; the pixel region 12 includes an anode 2, an organic light-emitting function layer 14, and a cathode 8 which are sequentially disposed on the first substrate 1, and the light emitted from the organic light-emitting function layer 14 is emitted from the second substrate. 11 is emitted (indicated by an arrow in FIG. 1); the pixel defining region 13 includes a pixel defining layer 6 disposed on the first substrate 1.
  • the cathode 8 covers the organic light-emitting function layer 14 and the pixel defining layer 6, and the cathode 8 is provided with a buffer layer 9 which is in contact with the second substrate 11.
  • the organic light-emitting functional layer 14 includes a first functional layer 3 (generally including a hole injection layer and an electron transport layer) connected to the anode 2, a light-emitting layer 4 for light emission, and a second functional layer 5 connected to the cathode ( Usually includes an electron transport layer and an electron injection layer).
  • a first functional layer 3 generally including a hole injection layer and an electron transport layer
  • a light-emitting layer 4 for light emission for light emission
  • a second functional layer 5 connected to the cathode ( Usually includes an electron transport layer and an electron injection layer).
  • the ambient light is incident on the second substrate 11 and is reflected on the surfaces of the organic light-emitting functional layer 14 and the cathode 8. Under the condition that the ambient light is strong, the reflected light entering the observer's eyes will significantly reduce the contrast of the display device and affect the display effect of the display.
  • a 1/4 wavelength polarizer is attached on the surface of the display device to reduce the reflection of the surface of the OLED device, and the contrast can be improved by using this method.
  • the 1/4 wavelength polarizer absorbs or loses about 60% of the luminescence, and the cost of the polarizer is high.
  • An object of the present invention is to solve the problem of reduction in display contrast due to reflection of ambient light in an organic light emitting diode display panel and a display device of the prior art, and to provide an organic light emitting diode display panel and a display device capable of improving contrast.
  • the technical solution adopted to solve the technical problem of the present invention is an organic light emitting diode display panel comprising: a first substrate and a second substrate disposed opposite to each other, the first substrate comprising a plurality of pixel regions and located between the pixel regions a pixel defining region, the pixel region including an anode, an organic light emitting function layer, and a cathode disposed on the first substrate, and a pixel defining layer disposed in the pixel defining region; and a orientation of the pixel defining layer a light absorbing layer matching the end surface positions of the two substrates, wherein the light absorbing layer is for absorbing the illuminating light; and a light concentrating unit disposed to match the light absorbing layer for concentrating the light incident on the light concentrating unit Post-illumination is performed on the light absorbing layer to absorb the light through the light absorbing layer.
  • the light concentrating unit includes at least one planar convex lens; each planar convex lens includes a flat portion that receives external incident light and a convex portion that collects light; the convex portion faces the light absorbing layer; The portion is parallel to the plane in which the light absorbing layer is located.
  • the light concentrating unit includes a plurality of the planar convex lenses, and the planar convex lenses are evenly distributed in a region corresponding to a region where the light absorbing layer is located.
  • the light absorbing layer is disposed on a surface of the pixel defining layer that faces the second substrate.
  • the cathode covers the organic light-emitting functional layer and the light absorbing layer.
  • a buffer layer is further disposed on the cathode, the planar portion is in contact with the second substrate, and the raised portion is located in the buffer layer.
  • the cathode covers the organic light emitting functional layer and the pixel defining layer toward an end surface of the second substrate.
  • the light absorbing layer is disposed on the cathode.
  • a buffer layer is further disposed on the cathode and the light absorbing layer, the planar portion is in contact with the second substrate, and the convex portion is located in the buffer layer.
  • the refractive index of the material of the light concentrating unit is greater than the refractive index of the material of the buffer layer.
  • the material of the light concentrating unit has a refractive index of 1.6 to 2.0
  • the material of the buffer layer has a refractive index of 1.4 to 1.6.
  • the planar portion has a diameter ranging from 1 ⁇ m to 5 ⁇ m, and the protrusion has a height ranging from 5 ⁇ m to 7 ⁇ m.
  • the light absorbing layer is made of a black light absorbing material.
  • the black light absorbing material is any one of black epoxy resin, molybdenum oxide, carbon black, and titanium oxide.
  • Another object of the present invention is to provide a display device including the above-described organic light emitting diode display panel.
  • the mutually matched light absorbing layer and the light concentrating unit are added in the pixel defining region, and the ambient light incident on the light concentrating unit is collected on the light absorbing layer by the light concentrating unit. And absorbed by it, thereby reducing the ambient light reflected by the OLED display panel and increasing the contrast of the OLED display panel.
  • FIG. 1 is a schematic structural view of a display panel of an organic light emitting diode in the prior art.
  • FIG. 2 is a schematic structural view of an organic light emitting diode display panel according to Embodiment 1 of the present invention.
  • the embodiment provides an organic light emitting diode display panel including a first substrate 1 and a second substrate 11 disposed opposite to each other; the first substrate 1 includes a plurality of pixel regions 12 and is located between the pixel regions 12 . a pixel defining region 13; the pixel region 12 includes an anode 2, an organic light emitting function layer 14, and a cathode 8 which are sequentially disposed on the first substrate 1, and light emitted from the organic light emitting function layer 14 is emitted from the second substrate 11 (arrows in FIG.
  • the pixel defining region 13 includes a pixel defining layer 6 disposed on the first substrate 1; the first substrate 1 further includes: a light absorbing layer matching the position of the end surface of the pixel defining layer 6 facing the second substrate 11. 7.
  • the light absorbing layer 7 is configured to absorb the illuminating light; and the light concentrating unit 10 disposed in matching with the light absorbing layer 7 is configured to illuminate the light absorbing after the light incident on the light concentrating unit is concentrated On layer 7, the light is absorbed by the light absorbing layer.
  • the organic light emitting diode display panel of the present invention adds the mutually matched light absorbing layer 7 and the light concentrating unit 10 in the pixel defining region 13, and the ambient light incident to the light concentrating unit 10 is collected by the light concentrating unit 10 onto the light absorbing layer 7. And absorbed by it, thereby reducing the ambient light reflected by the OLED display panel and increasing the contrast of the OLED display panel.
  • the light absorbing layer 7 is made of a black light absorbing material.
  • the black light absorbing material is any one of black epoxy resin, molybdenum oxide, carbon black, and titanium oxide.
  • the black light absorbing material described above is for absorbing light, and is not limited to the embodiment.
  • the above-described black light absorbing material may be formed on the end surface of the pixel defining layer 6 facing the second substrate 11 by coating or other methods, and a pattern of the corresponding light absorbing layer 7 may be formed by a patterning process.
  • the above-mentioned light concentrating unit 10 may be, for example, a convex lens, a lens array or other structure having a light collecting function, which is not limited herein.
  • the projected area of the light absorbing layer 7 on the second substrate 11 is equal to the projected area of the pixel defining layer 6 toward the end surface of the second substrate 11 on the second substrate 11.
  • the light absorbing layer 7 makes maximum use of the area of the pixel defining layer 6, while not affecting the display of the pixel area 12.
  • the projected areas of the light concentrating unit 10 and the light absorbing layer 7 on the second substrate 11 are equal. This ensures that the light concentrating unit 10 can project the collected light onto the light absorbing layer 7, instead of projecting on the organic light-emitting functional layer 14 to cause reflection again.
  • the light concentrating unit 10 is a planar convex lens.
  • the organic light emitting diode display panel comprises a plurality of planar convex lenses, and the plurality of planar convex lenses are evenly distributed in a region corresponding to the region where the light absorbing layer 7 is located to receive the incident light to the utmost extent.
  • the planar convex lens includes a flat portion that receives external incident light and a convex portion that collects light; the convex portion faces the light absorbing layer 7; and the flat portion is parallel to the plane in which the light absorbing layer 7 is located.
  • the planar convex lens can be formed using an acrylic UV curable resin, an epoxy UV curable resin, or a thermosetting resin. Planar convex lenses can be fabricated directly on a glass substrate. For example, the light concentrating unit 10 can be directly fabricated on the second substrate 11.
  • the light absorbing layer 7 is disposed on the end surface of the pixel defining layer 6 facing the second substrate 11; the cathode 8 covers the organic light emitting functional layer 14 and the light absorbing layer 7.
  • a buffer layer 9 is further provided on the cathode 8, and a convex portion of the planar convex lens is located in the buffer layer 9, and a planar portion of the planar convex lens is in contact with the second substrate 11.
  • a plano-convex lens can also be fabricated on the buffer layer 9.
  • the organic light-emitting functional layer 14 includes a first functional layer 3 (generally including a hole injection layer and an electron transport layer) connected to the anode 2, a light-emitting layer 4 for emitting light, and a second connected to the cathode 8.
  • Functional layer 5 (generally comprising an electron transport layer and an electron injection layer).
  • the organic light-emitting function layer 14 serves as a light source of the organic light-emitting diode display panel.
  • the refractive index of the material of the light concentrating unit 10 is greater than the refractive index of the material of the buffer layer 9. This is advantageous for making the ambient light irradiated to the light concentrating unit 10 all. It is collected on the light absorbing layer 7.
  • the material of the light concentrating unit 10 has a refractive index of 1.6 to 2.0
  • the material of the buffer layer has a refractive index of 1.4 to 1.6.
  • the material of the buffer layer is any one of an acrylic resin, an epoxy resin, and silicon.
  • the planar portion of the planar convex lens has a diameter ranging from 1 ⁇ m to 5 ⁇ m, and the height of the protruding portion ranges from 5 ⁇ m to 7 ⁇ m.
  • the size of the planar convex lens matches the pitch of the pixel region 12 which is conventionally used in the prior art, thereby concentrating ambient light onto the light absorbing layer 7.
  • the above structure is a general structure of a top emission type organic light emitting diode display panel, and other types of organic light emitting diode display panels are also feasible.
  • the preparation method of the OLED display panel of the present invention is in the prior art, and will not be further described herein. It should be noted that the size of the area where the light concentrating unit 10 is located may be adjusted in combination with the pitch of the specific pixel area 12, the material of the specific light concentrating unit, and the refractive index of the material of the buffer layer 9, so that the light is concentrated on the light concentrating unit 10. The ambient light is entirely concentrated on the light absorbing layer 7 while not affecting the display of the pixel region 12.
  • the embodiment provides an organic light emitting diode display panel.
  • the cathode 8 covers the end faces of the organic light emitting function layer 14 and the pixel defining layer 6 facing the second substrate 11; the light absorbing layer 7 is disposed on the cathode 8 . A position corresponding to an end face of the pixel defining layer 6 facing the second substrate 11 is formed.
  • a buffer layer 9 is further provided on the cathode 8 and the light absorbing layer 7.
  • the convex portion of the planar convex lens is located in the buffer layer 9, and the planar portion of the planar convex lens is in contact with the second substrate.
  • This embodiment provides an organic light emitting diode display device including the above display panel.
  • the display panel of the present invention is not limited to the organic light emitting diode display.
  • the display panel if it is a liquid crystal display panel, it is only necessary to provide a planar convex lens in a region corresponding to the black matrix on the liquid crystal display panel.

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  • Optics & Photonics (AREA)
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Abstract

一种有机发光二极管显示面板、显示装置，属于显示技术领域，其可解决现有的有机发光二极管显示面板和显示装置中由于环境光的反射导致显示对比度降低的问题。该有机发光二极管显示面板、显示装置中，在像素界定区域（13）中设有相互匹配的光线聚集单元（10）和光吸收层（7），其能够将入射的环境光通过光线聚集单元（10）聚集至光吸收层（7）上以被光吸收层（7）吸收，从而减少显示面板反射出来的环境光，增加显示面板的对比度。

Description

有机发光二极管显示面板和显示装置 技术领域
本发明属于显示技术领域，具体涉及一种有机发光二极管显示面板、显示装置。
背景技术
在有机发光二极管显示装置中，环境光会在发光层和金属电极表面上被反射。在外界背景光较强的条件下，这部分反射光进入观察者的眼睛会使显示器件的对比度明显地降低，影响显示器的显示效果。
图1为现有技术中顶发射型有机发光二极管显示装置的显示面板的结构示意图，包括相对设置的第一基板1和第二基板11；所述第一基板1包括多个像素区域12和位于所述像素区域12之间的像素界定区域13；像素区域12包括依次设置在第一基板1上的阳极2、有机发光功能层14、阴极8，有机发光功能层14发出的光从第二基板11射出(图1中箭头所示)；像素界定区域13包括设置在第一基板1上的像素界定层6。
阴极8覆盖有机发光功能层14和像素界定层6，在阴极8上设有缓冲层9，该缓冲层9与第二基板11接触。
通常，有机发光功能层14包括与阳极2连接的第一功能层3(通常包括空穴注入层和电子传输层)，用于发光的发光层4，以及与阴极连接的第二功能层5(通常包括电子传输层和电子注入层)。
外界环境光入射进入第二基板11后会在有机发光功能层14和阴极8的表面被反射。在外界环境光较强的条件下，这部分反射光进入观察者的眼睛会使显示器件的对比度明显地降低，影响显示器的显示效果。
现有技术中采用在显示器件表面上贴上1/4波长偏光片来降低有机发光二极管器件表面的反射，用这种方法可以提高对比度， 但是1/4波长偏光片吸收或损耗约60％的发光，且偏光片的成本较高。
其次，现有技术中还有在有机发光显示装置中增加消光干涉层的技术，这样也能提高对比度，但是要考虑消光干涉层与其他层的最高占有轨道(Highest Occupied Molecular Orbital)和最低未占有轨道(Lowest Unoccupied Molecular Orbital)能级的匹配关系。
再次，现有技术中还有在显示装置中增加一层光吸收层的技术，可以使环境光入射显示装置内部后反射减少，但同时也部分地吸收了有机发光二极管装置发出的光，因此对显示装置对比度的改善并不明显。
发明内容
本发明的目的是解决现有技术的有机发光二极管显示面板和显示装置中由于环境光的反射导致显示对比度降低的问题，提供一种能提高对比度的有机发光二极管显示面板和显示装置。
解决本发明技术问题所采用的技术方案是一种有机发光二极管显示面板，包括：相对设置的第一基板和第二基板，所述第一基板包括多个像素区域和位于所述像素区域之间的像素界定区域，所述像素区域包括设置在所述第一基板上的阳极、有机发光功能层和阴极，并且所述像素界定区域中设置有像素界定层；与所述像素界定层的朝向第二基板的端面位置相匹配的光吸收层，所述光吸收层用于吸收照射光线；以及与所述光吸收层相匹配设置的光线聚集单元，用于将外界入射在光线聚集单元的光线聚集后照射在所述光吸收层上，以通过所述光吸收层吸收所述光线。
优选的是，所述光线聚集单元包括至少一个平面凸透镜；每个平面凸透镜包括接收外界入射光的平面部和聚集光线的凸起部；所述凸起部朝向所述光吸收层；所述平面部与所述光吸收层所在的平面平行。
优选的是，所述光线聚集单元包括多个所述平面凸透镜，这些平面凸透镜均匀分布于对应所述光吸收层所在的区域的区域。
在一些实施例中，所述光吸收层设置于所述像素界定层的朝向所述第二基板的表面上。所述阴极覆盖所述有机发光功能层和所述光吸收层。在所述阴极上还设有缓冲层，所述平面部与所述第二基板接触，所述凸起部位于所述缓冲层中。
在另一些实施例中，所述阴极覆盖所述有机发光功能层和所述像素界定层朝向所述第二基板的端面。所述光吸收层设置于所述阴极上。在所述阴极上和所述光吸收层上还设有缓冲层，所述平面部与所述第二基板接触，所述凸起部位于所述缓冲层中。
优选的是，所述光线聚集单元的材料的折射率大于所述缓冲层的材料的折射率。
优选的是，所述光线聚集单元的材料的折射率为1.6-2.0，所述缓冲层的材料的折射率为1.4-1.6。
优选的是，所述平面部的直径范围为1μm-5μm，突起部的高度范围为5μm-7μm。
优选的是，所述光吸收层采用黑色光吸收材料制作而成。
优选的是，所述黑色光吸收材料为黑色环氧树脂、氧化钼、炭黑、亚氧化钛中的任意一种。
本发明的另一个目的是提供一种显示装置，所述显示装置包括上述的有机发光二极管显示面板。
在本发明的有机发光二极管显示面板和显示装置中，在像素界定区域增加了相互匹配的光吸收层和光线聚集单元，通过光线聚集单元将入射至光线聚集单元的环境光聚集至光吸收层上并被其吸收，从而减少了有机发光二极管显示面板反射出来的环境光，增加有机发光二极管显示面板的对比度。
附图说明
图1为现有技术中有机发光二极管显示面板的结构示意图。
图2为本发明实施例1中有机发光二极管显示面板的结构示意图。
具体实施方式
为使本领域技术人员更好地理解本发明的技术方案，下面结合附图和具体实施方式对本发明作进一步详细描述。
实施例1
如图2所示，本实施例提供一种有机发光二极管显示面板，包括相对设置的第一基板1和第二基板11；第一基板1包括多个像素区域12和位于像素区域12之间的像素界定区域13；像素区域12包括依次设置在第一基板1上的阳极2、有机发光功能层14、阴极8，有机发光功能层14发出的光从第二基板11射出(图2中箭头所示)；像素界定区域13包括设置在第一基板1上的像素界定层6；第一基板1还包括：与所述像素界定层6的朝向第二基板11的端面位置相匹配的光吸收层7，所述光吸收层7用于吸收照射光线；以及与所述光吸收层7相匹配设置的光线聚集单元10，用于将外界入射在光线聚集单元的光线聚集后照射在所述光吸收层7上，以通过所述光吸收层吸收所述光线。
本发明的有机发光二极管显示面板在像素界定区域13增加了相互匹配的光吸收层7和光线聚集单元10，通过光线聚集单元10将入射至光线聚集单元10的环境光聚集至光吸收层7上并被其吸收，从而减少有机发光二极管显示面板反射出来的环境光，增大有机发光二极管显示面板的对比度。
具体地，光吸收层7采用黑色光吸收材料制作而成。例如，黑色光吸收材料为黑色环氧树脂、氧化钼、炭黑、亚氧化钛中的任意一种。
应当理解的是，上述的黑色光吸收材料用于吸收光线，不限于本实施例所述。可通过涂覆或其他方法在像素界定层6的朝向第二基板11的端面形成上述黑色光吸收材料，并通过构图工艺形成相应的光吸收层7的图案。
上述的光线聚集单元10例如可以为凸透镜、透镜阵列或其他具有光线聚集功能的结构，在此不做限定。
优选的，光吸收层7在第二基板11上的投影面积与像素界定层6朝向第二基板11的端面在第二基板11上的投影面积相等。这样，光吸收层7最大程度地利用像素界定层6的面积，同时，不影响像素区域12的显示。
优选的，光线聚集单元10和光吸收层7在第二基板11上的投影面积相等。这样保证光线聚集单元10能够将聚集的光线投射在光吸收层7上，而不是投射在有机发光功能层14上再次引起反射。
如图2所示，光线聚集单元10为平面凸透镜。优选的，有机发光二极管显示面板包括多个平面凸透镜，且多个平面凸透镜均匀分布于对应光吸收层7所在区域的区域，以最大程度地接收入射的光线。平面凸透镜包括接收外界入射光的平面部和聚集光线的凸起部；凸起部朝向光吸收层7；平面部与光吸收层7所在的平面平行。
平面凸透镜可以采用丙烯酸类的UV固化型树脂、环氧类UV固化型树脂、或热固型树脂等形成。平面凸透镜可以直接制作于玻璃基板上。例如，光线聚集单元10可以直接制作于第二基板11上。
如图2所示，光吸收层7设置在像素界定层6的朝向第二基板11的端面上；阴极8覆盖有机发光功能层14和光吸收层7。
在阴极8上还设有缓冲层9，平面凸透镜的凸起部位于缓冲层9中，平面凸透镜的平面部与第二基板11接触。平面凸透镜也可以制作于缓冲层9上。
如图2所示，有机发光功能层14包括与阳极2连接的第一功能层3(通常包括空穴注入层和电子传输层)、用于发光的发光层4以及与阴极8连接的第二功能层5(通常包括电子传输层和电子注入层)。有机发光功能层14用作有机发光二极管显示面板的光源。
具体地，光线聚集单元10的材料的折射率大于缓冲层9的材料的折射率。这样有利于使照射在光线聚集单元10的环境光全部 聚集在光吸收层7上。例如，光线聚集单元10的材料的折射率为1.6-2.0，缓冲层的材料的折射率为1.4-1.6。
优选的，缓冲层的材料为丙烯酸树脂、环氧树脂、硅中的任意一种。
优选的，平面凸透镜的平面部的直径范围为1μm-5μm，突起部的高度范围为5μm-7μm。这样，平面凸透镜的尺寸匹配现有技术中常用的像素区域12的间距，从而将环境光聚集至光吸收层7上。
上述的结构为顶发射型有机发光二极管显示面板的通常结构，其它类型的有机发光二极管显示面板也是可行的。
本发明的有机发光二极管显示面板的制备方法为现有技术范畴，在此不再一一赘述。需要说明的是，光线聚集单元10的所在区域尺寸可以结合具体的像素区域12的间距、具体的光线聚集单元的材料和缓冲层9的材料的折射率进行调整，使得照射在光线聚集单元10上的环境光全部聚集于光吸收层7上，同时不影响像素区域12的显示。
实施例2
本实施例提供一种有机发光二极管显示面板，与实施例1不同的是，阴极8覆盖有机发光功能层14和像素界定层6的朝向第二基板11的端面；光吸收层7设置在阴极8上与像素界定层6的朝向第二基板11的端面相对应的位置。
在阴极8上和光吸收层7上还设有缓冲层9，平面凸透镜的凸起部位于缓冲层9中，平面凸透镜的平面部与第二基板接触。
其它结构与实施例1相同，在此不再一一赘述。
实施例3
本实施例提供一种有机发光二极管显示装置，包括上述的显示面板。
应当理解的是，本发明的显示面板不限于有机发光二极管显 示面板，若是液晶显示面板，只需在液晶显示面板上的黑矩阵对应的区域设置平面凸透镜即可。
可以理解的是，以上实施方式仅仅是为了说明本发明的原理而采用的示例性实施方式，然而本发明并不局限于此。对于本领域内的普通技术人员而言，在不脱离本发明的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本发明的保护范围。

Claims (15)

  1. 一种有机发光二极管显示面板，包括：
    相对设置的第一基板和第二基板，所述第一基板包括多个像素区域和位于所述像素区域之间的像素界定区域，所述像素区域包括设置在所述第一基板上的阳极、有机发光功能层和阴极，并且所述像素界定区域中设置有像素界定层；
    与所述像素界定层的朝向第二基板的端面位置相匹配的光吸收层，所述光吸收层用于吸收照射光线；以及
    与所述光吸收层相匹配设置的光线聚集单元，用于将外界入射在光线聚集单元的光线聚集后照射在所述光吸收层上，以通过所述光吸收层吸收所述光线。
  2. 如权利要求1所述的显示面板，其中，
    所述光线聚集单元包括至少一个平面凸透镜；每个平面凸透镜包括接收外界入射光的平面部和聚集光线的凸起部；所述凸起部朝向所述光吸收层；所述平面部与所述光吸收层所在的平面平行。
  3. 如权利要求2所述的显示面板，其中，
    所述光线聚集单元包括多个所述平面凸透镜，这些平面凸透镜均匀分布于对应所述光吸收层所在区域的区域。
  4. 如权利要求2或3所述的显示面板，其中，
    所述光吸收层设置于所述像素界定层的朝向所述第二基板的表面上。
  5. 如权利要求4所述的显示面板，其中，
    所述阴极覆盖所述有机发光功能层和所述光吸收层。
  6. 如权利要求5所述的显示面板，其中，
    在所述阴极上还设有缓冲层，
    所述平面部与所述第二基板接触，所述凸起部位于所述缓冲层中。
  7. 如权利要求2或3所述的显示面板，其中，
    所述阴极覆盖所述有机发光功能层和所述像素界定层朝向所述第二基板的端面。
  8. 如权利要求7所述的显示面板，其中，
    所述光吸收层设置于所述阴极上。
  9. 如权利要求8所述的显示面板，其中，
    在所述阴极上和所述光吸收层上还设有缓冲层，
    所述平面部与所述第二基板接触，所述凸起部位于所述缓冲层中。
  10. 如权利要求6或9所述的显示面板，其中，
    所述光线聚集单元的材料的折射率大于所述缓冲层的材料的折射率。
  11. 如权利要求10所述的显示面板，其中，
    所述光线聚集单元的材料的折射率为1.6-2.0，所述缓冲层的材料的折射率为1.4-1.6。
  12. 如权利要求2或3所述的显示面板，其中，
    所述平面部的直径范围为1μm-5μm，所述凸起部的高度范围为5μm-7μm。
  13. 如权利要求1所述的显示面板，其中，
    所述光吸收层采用黑色光吸收材料制作而成。
  14. 如权利要求13所述的显示面板，其中，
    所述黑色光吸收材料为黑色环氧树脂、氧化钼、炭黑、亚氧化钛中的任意一种。
  15. 一种有机发光二极管显示装置，包括如权利要求1-14任一所述的显示面板。
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Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI549330B (zh) * 2014-06-04 2016-09-11 群創光電股份有限公司 有機發光二極體顯示器
CN104051670B (zh) * 2014-06-12 2016-08-17 京东方科技集团股份有限公司 一种显示面板及其制作方法、显示装置
CN104393183B (zh) * 2014-11-17 2017-09-29 昆山国显光电有限公司 一种有机电致发光装置及其制备方法
TWI607233B (zh) * 2015-02-16 2017-12-01 財團法人工業技術研究院 光學膜結構與顯示器結構
CN104820309B (zh) * 2015-05-19 2018-04-17 京东方科技集团股份有限公司 一种光学组件及其制造方法、偏光片
KR20170143129A (ko) 2016-06-20 2017-12-29 삼성디스플레이 주식회사 전자 장치 및 이의 제조 방법
CN106848095A (zh) * 2017-01-24 2017-06-13 上海天马微电子有限公司 一种有机电致发光显示面板及其制备方法和电子设备
CN107086240B (zh) * 2017-04-21 2021-01-22 京东方科技集团股份有限公司 有机电致发光显示器件及其制备方法、掩膜版和显示装置
CN109119437B (zh) * 2017-06-23 2021-09-28 京东方科技集团股份有限公司 像素界定层及制造方法、显示基板及制造方法、显示面板
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US20200203567A1 (en) * 2018-12-21 2020-06-25 Lumileds Holding B.V. Led package with increased contrast ratio
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CN110047890B (zh) * 2019-04-18 2021-04-06 昆山工研院新型平板显示技术中心有限公司 柔性显示面板和柔性显示装置
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CN114975538A (zh) * 2022-04-27 2022-08-30 武汉华星光电半导体显示技术有限公司 显示面板、显示模组

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1717138A (zh) * 2004-07-02 2006-01-04 三星电子株式会社 单向透明光学系统
CN101288172A (zh) * 2005-09-30 2008-10-15 伊斯曼柯达公司 将oled器件电极和光学材料图案化
US20090224662A1 (en) * 2008-03-04 2009-09-10 Tpo Displays Corp. Organic light-emitting diode display device
CN101533850A (zh) * 2008-03-13 2009-09-16 统宝光电股份有限公司 有机发光二极管显示装置及其显示系统
CN103187434A (zh) * 2013-04-01 2013-07-03 京东方科技集团股份有限公司 有机电致发光器件及制备有机电致发光器件的方法
CN204067363U (zh) * 2014-06-11 2014-12-31 京东方科技集团股份有限公司 一种有机发光二极管显示面板、显示装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100829753B1 (ko) * 2007-03-02 2008-05-15 삼성에스디아이 주식회사 유기 발광 디스플레이장치
KR101493021B1 (ko) * 2008-08-19 2015-02-12 삼성디스플레이 주식회사 유기 발광 표시 장치
KR101156436B1 (ko) * 2010-01-19 2012-06-18 삼성모바일디스플레이주식회사 광학필름 및 이를 구비하는 유기 발광 디스플레이 장치

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1717138A (zh) * 2004-07-02 2006-01-04 三星电子株式会社 单向透明光学系统
CN101288172A (zh) * 2005-09-30 2008-10-15 伊斯曼柯达公司 将oled器件电极和光学材料图案化
US20090224662A1 (en) * 2008-03-04 2009-09-10 Tpo Displays Corp. Organic light-emitting diode display device
CN101533850A (zh) * 2008-03-13 2009-09-16 统宝光电股份有限公司 有机发光二极管显示装置及其显示系统
CN103187434A (zh) * 2013-04-01 2013-07-03 京东方科技集团股份有限公司 有机电致发光器件及制备有机电致发光器件的方法
CN204067363U (zh) * 2014-06-11 2014-12-31 京东方科技集团股份有限公司 一种有机发光二极管显示面板、显示装置

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