WO2022227121A1 - Oled 显示面板 - Google Patents

Oled 显示面板 Download PDF

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Publication number
WO2022227121A1
WO2022227121A1 PCT/CN2021/093365 CN2021093365W WO2022227121A1 WO 2022227121 A1 WO2022227121 A1 WO 2022227121A1 CN 2021093365 W CN2021093365 W CN 2021093365W WO 2022227121 A1 WO2022227121 A1 WO 2022227121A1
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WO
WIPO (PCT)
Prior art keywords
display panel
oled display
layer
thermally conductive
functional layer
Prior art date
Application number
PCT/CN2021/093365
Other languages
English (en)
French (fr)
Inventor
刘红梅
Original Assignee
武汉华星光电技术有限公司
武汉华星光电半导体显示技术有限公司
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Application filed by 武汉华星光电技术有限公司, 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to US17/296,339 priority Critical patent/US20240215418A1/en
Publication of WO2022227121A1 publication Critical patent/WO2022227121A1/zh

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Classifications

    • 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
    • H10K59/8794—Arrangements for heating and cooling
    • 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
    • H10K50/87—Arrangements for heating or cooling
    • 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
    • H10K59/124—Insulating layers formed between TFT elements and OLED elements
    • 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
    • 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

Definitions

  • the present application relates to the technical field of OLED displays, and in particular, to an OLED display panel.
  • OLED display panels without polarizer structures are usually used to replace polarizers.
  • the block can control the light incident on the light-emitting unit and make its reflected light become the same color light as the light-emitting unit, eliminating the reflection of the ambient light by the reflective surface, and the black matrix can block the external ambient light in other parts except the light-emitting unit. incident, thus suppressing reflected light from other metal traces.
  • the existing OLED display panel has the technical problem of uneven temperature in the plane.
  • the embodiments of the present application provide an OLED display panel, which can alleviate the technical problem of in-plane temperature unevenness in the existing OLED display panel.
  • Embodiments of the present application provide an OLED display panel, including a substrate, a light-emitting unit, a pixel definition layer, and an encapsulation layer, wherein the OLED display panel further includes at least one thermally conductive functional layer, and the thermally conductive functional layer is made of Transparent graphite material.
  • the preparation material of the thermally conductive functional layer is graphene.
  • the graphene is a multi-layer structure.
  • the OLED display panel further includes a color filter disposed on the encapsulation layer, and the color filter includes a black matrix and a color blocking block spaced from each other , the preparation material of the black matrix is graphite.
  • the OLED display panel further includes an interlayer insulating layer and a flat layer, and the thermally conductive functional layer is disposed between the interlayer insulating layer and the flat layer.
  • the entire surface of the thermally conductive functional layer is disposed between the interlayer insulating layer and the flat layer.
  • a recessed area is provided on the upper surface of the interlayer insulating layer, and a thermally conductive functional layer is provided in the recessed area.
  • the cross-sectional shape of the recessed region is any one of a rectangle, a trapezoid, a triangle, a rhombus, and a parallelogram.
  • the thermally conductive functional layer is disposed between the black matrix and the encapsulation layer.
  • the orthographic projection of the thermally conductive functional layer on the substrate coincides or overlaps with the orthographic projection of the black matrix on the substrate.
  • the thermally conductive functional layer is disposed between the color resist block and the packaging layer.
  • the color filter further includes a cover plate disposed above the black matrix, and between the cover plate and the black matrix/the color blocking block There is the thermally conductive functional layer.
  • both the upper surface and the lower surface of the black matrix/the color blocking block are provided with the thermally conductive functional layer.
  • a cover plate is disposed above the black matrix, and optical glue is disposed on a side surface of the black matrix facing the cover plate.
  • the black matrix is provided with a groove, and the optical glue is partially filled in the groove.
  • the thermally conductive functional layer is an insulating material, and the thermally conductive functional layer may be disposed between any adjacent film layers.
  • the thermally conductive functional layer is a conductive material, and the thermally conductive functional layer is disposed between any adjacent insulating layers.
  • an isolation layer is further included, the isolation layer is an insulating material, and the isolation layer is disposed on at least one surface of the thermally conductive functional layer.
  • the isolation layer is disposed around the thermally conductive functional layer.
  • the thermally conductive functional layer is any one or multiple layers of a buffer layer, an interlayer insulating layer, a flat layer, and an encapsulation layer.
  • the OLED display panel provided by the embodiment of the present application includes a substrate, a light-emitting unit, a pixel definition layer, and an encapsulation layer, wherein the OLED display panel further includes at least one thermally conductive functional layer, and the preparation material of the thermally conductive functional layer is transparent graphite Material; by arranging a thermally conductive functional layer in the OLED display panel, the thermally conductive functional layer has the effect of increasing the in-plane temperature uniformity, and alleviates the technical problem of in-plane temperature unevenness in the existing OLED display panel.
  • the projection of the second data line is the same as that of the adjacent dummy pixel unit.
  • the overlapping area formed by the projection of the main electrode of the pixel electrode overlaps, so that a capacitance is formed between the second data line and other film layers of the dummy pixel unit, thereby increasing the capacitive load on the second data line , the charging rate of the display pixel unit corresponding to the second data line is reduced, and the charging rate of each display pixel unit in the array substrate is guaranteed to be equivalent, thereby improving the display panel with the array substrate.
  • the phenomenon that the display effect at the edge is not good.
  • FIG. 1 is a first schematic cross-sectional view of an OLED display panel provided by an embodiment of the present application
  • FIG. 2 is a second schematic cross-sectional view of an OLED display panel provided by an embodiment of the present application.
  • FIG. 3 is a third schematic cross-sectional view of an OLED display panel provided by an embodiment of the present application.
  • FIG. 4 is a fourth schematic cross-sectional view of an OLED display panel provided by an embodiment of the present application.
  • FIG. 5 is a fifth schematic cross-sectional view of the OLED display panel provided by the embodiment of the present application.
  • FIG. 6 is a sixth schematic cross-sectional view of the OLED display panel provided by the embodiment of the present application.
  • Embodiments of the present application provide an OLED display panel. Each of them will be described in detail below. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments.
  • the OLED display panel 1 provided in the embodiment of the present application includes a substrate 10 , a light-emitting unit 20 , a pixel definition layer 30 , and an encapsulation layer 40 , wherein the OLED display panel 1 further includes at least one thermally conductive functional layer 50.
  • the preparation material of the thermally conductive functional layer 50 is a transparent graphite material.
  • the transparent graphite material has the characteristics of high light transmittance and thermal conductivity, and the heat dissipation capability of the thermally conductive functional layer 50 is greater than the heat dissipation capability of other film layers of the OLED display panel 1 .
  • the OLED display panel 1 may further include a color filter 60 disposed on the encapsulation layer 40 , and the color filter 60 includes a black matrix 601 , a color blocking block 602 , and a cover plate 603 .
  • the OLED display panel 1 includes a substrate 10 , a light-emitting unit 20 , a pixel definition layer 30 , and an encapsulation layer 40 , wherein the OLED display panel 1 further includes at least one thermally conductive functional layer 50 .
  • the preparation material of the thermally conductive functional layer 50 is a transparent graphite material; by arranging the thermally conductive functional layer 50 in the OLED display panel 1, the thermally conductive functional layer 50 has the effect of increasing the in-plane temperature uniformity and accelerating the heat dissipation of the panel, thereby improving the OLED display panel.
  • the uniformity of brightness and chromaticity of the panel 1 alleviates the technical problem of uneven temperature within the surface of the existing OLED display panel 1 .
  • the preparation material of the thermally conductive functional layer 50 includes, but is not limited to, a transparent graphite material.
  • the preparation material of the thermally conductive functional layer 50 may be a material with electrical conductivity and thermal conductivity.
  • the preparation material of the thermally conductive functional layer 50 may also be an insulating material.
  • the thermally conductive functional layer 50 when the preparation material of the thermally conductive functional layer 50 has electrical conductivity, the thermally conductive functional layer 50 can only be disposed between adjacent insulating film layers and be insulated from other film layers with electrical conductivity. The thermal conduction functional layer 50 is prevented from conducting with other film layers with conductive properties in the OLED display panel 1, resulting in abnormal display.
  • the thermally conductive functional layer 50 is an insulating material.
  • the thermally conductive functional layer 50 may be disposed in any region of the OLED display panel 1 or between adjacent film layers.
  • the thermally conductive functional layer 50 may be an existing film layer in the OLED display panel 1 , for example, the thermally conductive functional layer 50 may be any of a buffer layer, an interlayer insulating layer, a flat layer, and an encapsulation layer 40 or multiple layers.
  • the thermally conductive functional layer 50 when the thermally conductive functional layer 50 is a newly added film layer in the OLED display panel 1, since the thermally conductive functional layer 50 is an insulating material, the thermally conductive functional layer 50 can be directly disposed on any adjacent one. Between the film layers, the arrangement scheme and the preparation process thereof are relatively simple, and at the same time, there is no need to add other insulating material layers to insulate the thermally conductive functional layer 50 from other conductive layers, thereby reducing the cost.
  • the thermally conductive functional layer 50 is an existing OLED film layer
  • the film of the OLED display panel 1 is reduced or unnecessary to be added.
  • Layer thickness using the good thermal conductivity of the transparent graphite material, not only increases the in-plane heat dissipation of the OLED display panel 1 and achieves in-plane temperature uniformity, but also has the technical effect of making the OLED display panel 1 lighter and thinner.
  • the preparation material of the thermally conductive functional layer 50 is graphene.
  • the thermal conductivity of the graphene ranges from 500 watts/m.degree to 600 watts/m.degree. At the same time, because the thickness of graphene is very thin, it has better permeability. .
  • the graphene can be a one-layer or multi-layer structure, which is selected according to the actual thermal conductivity requirements and overall thickness requirements of the OLED display panel 1 .
  • the good thermal conductivity and light transmission properties of graphene are utilized, and the thermal conductivity functional layer 50 is prepared with graphene, which improves the uniformity of brightness and chromaticity of the OLED display panel 1 .
  • the OLED display panel 1 further includes a color filter 60 disposed on the encapsulation layer 40 , and the color filter 60 includes a black matrix 601 and a color blocking block 602 that are spaced apart from each other , the preparation material of the black matrix 601 is graphite.
  • the color blocking block 602 is used to process the reflected light of the ambient light incident into the light-emitting unit 20, and make the reflected light become light of the same color as the light emitted by the light-emitting unit 20, eliminating the effect of the reflective surface on the ambient light.
  • the black matrix 601 can block the incidence of external ambient light in other parts except the light emitting unit 20, reduce the reflection of the external ambient light, eliminate the color shift of the outgoing light, and reduce power consumption.
  • the preparation material of the black matrix 601 is set to graphite, which utilizes the excellent thermal conductivity and opacity of graphite, and the thermal conductivity of the graphite decreases with the increase of temperature.
  • the thermal conductivity of graphite Preferably, the thermal conductivity of the graphite exceeds that of metal materials such as steel, iron, and lead.
  • the high thermal conductivity and light-shielding properties of graphite are used to reduce the reflection of external ambient light, eliminate the color shift of the outgoing light, and reduce the power consumption.
  • the OLED display panel 1 further includes an interlayer insulating layer and a flat layer, and the thermally conductive functional layer 50 is disposed between the interlayer insulating layer and the flat layer.
  • the thermally conductive functional layer 50 may be disposed on the entire surface between the interlayer insulating layer and the flat layer.
  • the thermally conductive functional layer 50 may also be disposed in a partial area of the OLED display panel 1 , for example, a concave area is disposed on the upper surface of the interlayer insulating layer, and the thermally conductive functional layer 50 is disposed in the concave.
  • the film thickness of the existing OLED display panel 1 can be not increased, and the in-plane heat dissipation rate can be increased at the same time.
  • the thermally conductive functional layer 50 is disposed between the black matrix 601 and the encapsulation layer 40 .
  • the orthographic projection of the thermally conductive functional layer 50 on the substrate 10 coincides or overlaps with the orthographic projection of the black matrix 601 on the substrate 10 .
  • the thermally conductive functional layer 50 by arranging the thermally conductive functional layer 50 under the black matrix 601, the light transmittance of the OLED display panel 1 will not be affected.
  • the material selection range of the thermally conductive functional layer 50 reduces the cost.
  • the preparation material of the thermally conductive functional layer 50 may be a viscous material, which also has the effect of increasing the viscosity between the black matrix 601 and the encapsulation layer 40 .
  • the thermally conductive functional layer 50 also has the effect of increasing the bonding force between adjacent film layers in the OLED panel.
  • the thermally conductive functional layer 50 is disposed between the color resist block 602 and the packaging layer 40 .
  • the preparation material of the thermally conductive functional layer 50 is a light-transmitting material.
  • the preparation material of the thermally conductive functional layer 50 may be graphene.
  • the color filter 60 further includes a cover plate 603 disposed above the black matrix 601, and the cover plate 603 is disposed between the black matrix 601/the color blocking block 602 There is the thermally conductive functional layer 50 .
  • the thermally conductive functional layer 50 is correspondingly disposed between the cover plate 603 and the black matrix 601, and the orthographic projection of the black matrix 601 on the substrate 10 and the thermally conductive functional layer 50 on the substrate
  • the orthographic projections on the bottom 10 are overlapped or overlapped, which will not affect the light transmittance of the OLED display panel 1 while increasing the heat dissipation effect.
  • the preparation material of the black matrix 601 when the preparation material of the black matrix 601 is graphite, since the bonding force between the graphite and the cover plate 603 is weak, the preparation material of the thermally conductive functional layer 50 may be a viscous material, and the thermally conductive functional layer 50 has good thermal conductivity. It can also increase the bonding force between the black matrix 601 and the cover plate 603, and alleviate the technical problem that peeling between the black matrix 601 and the cover plate 603 is easy to occur.
  • the thermally conductive functional layer 50 is provided on both the upper and lower surfaces of the black matrix 601/the color resist block 602 .
  • the heat conduction functional layer 50 is provided on the upper surface and the lower surface of the black matrix 601 and the color resist block 602 .
  • the heat conduction functional layer 50 is provided on the upper surface and the lower surface of the black matrix 601 or the color resist block 602 .
  • the heat dissipation efficiency of the in-plane temperature is further increased, and the uniformity of the in-plane temperature is adjusted.
  • the preparation material of the black matrix 601 may be graphite, and the preparation material of the black matrix 601 is not limited to graphite, and may also be other materials having the same characteristics as graphite.
  • the preparation material of the thermally conductive functional layer 50 may be graphene or transparent graphite material, and the preparation material of the thermally conductive functional layer 50 is not limited to graphene or transparent graphite material, and may also be other materials having and A material with the same properties as graphene.
  • a cover plate 603 is disposed above the black matrix 601 , and an optical glue 70 is disposed on a side surface of the black matrix 601 facing the cover plate 603 .
  • the preparation material of the black matrix 601 can be graphite. Since the bonding force between the graphite and the preparation material of the cover plate 603 is weak, optical glue can be provided on the side surface of the black matrix 601 facing the cover plate 603 70. Enhance the bonding force between the black matrix 601 and the cover plate 603 through the optical glue 70 .
  • the technical problem of reducing the bonding force between the film layers caused by the black matrix 601 being set as graphite is alleviated, and the bonding force between the cover plate 603 and the black matrix 601 is increased, The film peeling phenomenon between the black matrix 601 and the cover plate 603 in the color filter 60 is alleviated.
  • the black matrix 601 is provided with a groove 80 , and the optical glue 70 is partially filled in the groove 80 .
  • the cross-sectional shape of the groove 80 may be any one of a rectangle, a triangle, and a trapezoid.
  • a plurality of the grooves 80 may be provided in the black matrix 601, and the spacing between the adjacent grooves 80 may be equal.
  • the grooves 80 may be arranged on the black matrix 601 in an array.
  • the optical glue 70 is filled in the groove 80, and by arranging the groove 80 in the black matrix 601, the optical glue 70 and the black matrix are enlarged.
  • the contact area between 601 and the adhesion between the cover plate 603 and the black matrix 601 are increased by the adhesiveness of the optical adhesive 70 .
  • the OLED display panel 1 includes a color filter 60, and the color filter 60 is attached to a surface of the encapsulation layer 40 on one side away from the substrate 10, and the color filter 60
  • the light sheet 60 includes a black matrix 601 , a color resist block 602 , and a cover plate 603 , and the optical glue 70 is provided on the side of the black matrix 601 close to the encapsulation layer 40 .
  • the cross-sectional shape of the groove 80 may be any one of a rectangle, a triangle, and a trapezoid.
  • a plurality of the grooves 80 may be provided on the side surface of the black matrix 601 close to the encapsulation layer 40 , and the spacing between the adjacent grooves 80 may be equal.
  • the grooves 80 may be arranged in an array on one surface of the black matrix 601 close to the encapsulation layer 40 .
  • the groove 80 is filled with the optical glue 70 , and by arranging the groove 80 in the black matrix 601 , The contact area between the optical adhesive 70 and the black matrix 601 is increased, and the bonding force between the color filter 60 and the encapsulation layer 40 is increased by the adhesiveness of the optical adhesive 70 .
  • the OLED display panel provided in this embodiment includes a substrate, a light-emitting unit, a pixel definition layer, and an encapsulation layer, wherein the OLED display panel further includes at least one thermally conductive functional layer.
  • the preparation of the thermally conductive functional layer The material is transparent graphite material; by arranging a thermally conductive functional layer in the OLED display panel, the thermally conductive functional layer has the effect of increasing the in-plane temperature uniformity and accelerating the heat dissipation of the panel, thereby improving the uniformity of the brightness and chromaticity of the OLED display panel , which alleviates the technical problem of in-plane temperature unevenness in the existing OLED display panel.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

一种OLED显示面板(1)，OLED显示面板(1)包括至少一导热功能层(50)，导热功能层(50)的制备材料为透明石墨材料；通过在OLED显示面板(1)内设置导热功能层(50)，提高了面内温度的均一性。

Description

OLED显示面板 技术领域
本申请涉及OLED显示技术领域，具体涉及一种OLED显示面板。
 背景技术
现有OLED显示面板为消除偏光片带来的不良影响，通常采用无偏光片结构的OLED显示面板来代替偏光片，无偏光片结构的OLED显示面板主要由色阻块与黑色矩阵组成，色阻块可以控制入射到发光单元中光并使得其反射光变为与发光单元一样的同色光，消除了反光表面对环境光的反射，黑色矩阵在除发光单元外的其他部位可以阻挡外界环境光的入射，因此抑制了其他金属走线的反射光。
OLED显示面板在运行过程由于电流均匀性以及面内电阻的均匀性等问题，不同位置的发热状况不同。面内温度不均匀就会造成OLED发光的亮度均匀性变差，引起面内亮度不均，色度不均等一系列问题。
因此，现有OLED显示面板存在面内温度不均匀的技术问题。
 技术问题
本申请实施例提供一种OLED显示面板，可以缓解现有OLED显示面板存在面内温度不均匀的技术问题。
 技术解决方案
为解决上述问题，本申请提供的技术方案如下：
本申请实施例提供一种OLED显示面板，包括衬底、发光单元、像素定义层、以及封装层，其中，所述OLED显示面板还包括至少一导热功能层，所述导热功能层的制备材料为透明石墨材料。
可选的，在本申请的一些实施例中，所述导热功能层的制备材料为石墨烯。
可选的，在本申请的一些实施例中，所述石墨烯为多层结构。
可选的，在本申请的一些实施例中，所述OLED显示面板还包括设置在所述封装层上的彩色滤光片，所述彩色滤光片包括相互间隔设置的黑色矩阵和色阻块，所述黑色矩阵的制备材料为石墨。
可选的，在本申请的一些实施例中，所述OLED显示面板还包括层间绝缘层、平坦层，所述导热功能层设置在所述层间绝缘层和所述平坦层之间。
可选的，在本申请的一些实施例中，所述导热功能层整面设置在所述层间绝缘层和所述平坦层之间。
可选的，在本申请的一些实施例中，所述层间绝缘层上表面设置有凹陷区域，在所述凹陷区域内设置导热功能层。
可选的，在本申请的一些实施例中，所述凹陷区域的截面形状为矩形、梯形、三角形、菱形、平行四边形中的任一种。
可选的，在本申请的一些实施例中，所述导热功能层设置在所述黑色矩阵与所述封装层之间。
可选的，在本申请的一些实施例中，所述导热功能层在所述衬底上的正投影与所述黑色矩阵在所述衬底上的正投影重合或重叠。
可选的，在本申请的一些实施例中，所述导热功能层设置在所述色阻块与所述封装层之间。
可选的，在本申请的一些实施例中，所述彩色滤光片还包括设置在所述黑色矩阵上方的盖板，所述盖板与所述黑色矩阵/所述色阻块之间设置有所述导热功能层。
可选的，在本申请的一些实施例中，所述黑色矩阵/所述色阻块上表面和下表面均设置有所述导热功能层。
可选的，在本申请的一些实施例中，所述黑色矩阵上方设置有盖板，所述黑色矩阵朝向所述盖板的一侧表面设置有光学胶。
可选的，在本申请的一些实施例中，所述黑色矩阵设置有凹槽，所述光学胶部分填充在所述凹槽内。
可选的，在本申请的一些实施例中，所述导热功能层为绝缘材料，所述导热功能层可以设置在任一相邻膜层之间。
可选的，在本申请的一些实施例中，所述导热功能层为导电材料，所述导热功能层设置在任一相邻绝缘层之间。
可选的，在本申请的一些实施例中，还包括隔离层，所述隔离层为绝缘材料，所述隔离层设置在所述导热功能层的至少一侧表面。
可选的，在本申请的一些实施例中，所述隔离层围绕所述导热功能层设置。
可选的，在本申请的一些实施例中，所述导热功能层为缓冲层、层间绝缘层、平坦层、封装层中的任一层或多层。
本申请实施例提供的OLED显示面板包括衬底、发光单元、像素定义层、以及封装层，其中，所述OLED显示面板还包括至少一导热功能层，所述导热功能层的制备材料为透明石墨材料；通过在OLED显示面板内设置导热功能层，所述导热功能层起到增加面内温度均一性的效果，缓解了现有OLED显示面板存在面内温度不均匀的技术问题。
 有益效果
本申请通过改变所述数据线中位于所述显示像素单元和所述虚拟像素单元之间的所述第二数据线的设计方式，使所述第二数据线的投影与相邻的所述虚拟像素电极的主干电极的投影部分重叠形成的重叠区，从而使所述第二数据线与所述虚拟像素单元的其他膜层之间形成电容，进而增大所述第二数据线上的电容负载，使对应所述第二数据线的所述显示像素单元的充电率减小，保证所述阵列基板中每个所述显示像素单元的充电率相当，进而改善了具有所述阵列基板的显示面板边缘处的显示效果不良的现象。
 附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例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是本申请的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的OLED显示面板的第一种截面示意图；
图2是本申请实施例提供的OLED显示面板的第二种截面示意图；
图3是本申请实施例提供的OLED显示面板的第三种截面示意图；
图4是本申请实施例提供的OLED显示面板的第四种截面示意图；
图5是本申请实施例提供的OLED显示面板的第五种截面示意图；
图6是本申请实施例提供的OLED显示面板的第六种截面示意图。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请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申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。此外，应当理解的是，此处所描述的具体实施方式仅用于说明和解释本申请，并不用于限制本申请。在本申请中，在未作相反说明的情况下，使用的方位词如“上”和“下”通常是指装置实际使用或工作状态下的上和下，具体为附图中的图面方向；而“内”和“外”则是针对装置的轮廓而言的。
本申请实施例提供一种OLED显示面板。以下分别进行详细说明。需说明的是，以下实施例的描述顺序不作为对实施例优选顺序的限定。
如图1所示，本申请实施例提供的OLED显示面板1包括衬底10、发光单元20、像素定义层30、以及封装层40，其中，所述OLED显示面板1还包括至少一导热功能层50，所述导热功能层50的制备材料为透明石墨材料。
其中，所述透明石墨材料具有透光性和导热性高的特性，所述导热功能层50的散热能力大于OLED显示面板1的其他膜层的散热能力。
其中，所述OLED显示面板1还可以包括设置在所述封装层40上的彩色滤光片60，所述彩色滤光片60包括黑色矩阵601、色阻块602、盖板603。
在本实施例中，所述OLED显示面板1包括衬底10、发光单元20、像素定义层30、以及封装层40，其中，所述OLED显示面板1还包括至少一导热功能层50，所述导热功能层50的制备材料为透明石墨材料；通过在OLED显示面板1内设置导热功能层50，所述导热功能层50起到增加面内温度均匀性并加快面板散热的效果，提高了OLED显示面板1的亮度及色度的均匀性，缓解了现有OLED显示面板1存在面内温度不均匀的技术问题。
在一种实施例中，所述导热功能层50的制备材料包括但不限于透明石墨材料。
其中，所述导热功能层50的制备材料可以为具有导电、导热特性的材料。
其中，所述导热功能层50的制备材料也可以为绝缘材料。
在本实施例中，当所述导热功能层50的制备材料具有导电特性时，所述导热功能层50只能设置在相邻绝缘膜层之间且与其他具有导电特性的膜层绝缘设置，防止所述导热功能层50与OLED显示面板1内的其他具有导电特性的膜层导通，造成显示异常。
在一种实施例中，所述导热功能层50为绝缘材料。
其中，所述导热功能层50可以设置在OLED显示面板1的任一区域或相邻膜层之间。
其中，所述导热功能层50可以为OLED显示面板1内的现有膜层，例如：所述导热功能层50可以为缓冲层、层间绝缘层、平坦层、封装层40中的任一层或多层。
在本实施例中，所述导热功能层50为OLED显示面板1内的新增膜层时，由于所述导热功能层50为绝缘材料，因此所述导热功能层50可直接设置在任一相邻膜层之间，其设置方案和其制备过程较为简便，同时也无需增加其他绝缘材料层将所述导热功能层50与其他导电层绝缘开，降低了成本。
在本实施例中，所述导热功能层50为OLED现有膜层时，由于无需在OLED显示面板1新增一膜层作为所述导热功能层50，降低或无需增加OLED显示面板1的膜层厚度，利用透明石墨材料的良好导热特性，在增加了OLED显示面板1面内散热及实现面内温度均一性的同时，还起到了OLED显示面板1更轻薄的技术效果。
在一种实施例中，所述导热功能层50的制备材料为石墨烯。
其中，在室温条件下，所述石墨烯的热导率的范围为500瓦/米·度至600 瓦/米·度，同时，由于石墨烯厚度很薄，因此其具有较好的透过性能。
其中，所述石墨烯可以为一层或多层结构，通过OLED显示面板1的实际导热需求及整体厚度需求进行选择。
在本实施例中，利用了石墨烯良好的导热及透光特性，将导热功能层50用石墨烯制备，提高了OLED显示面板1的亮度及色度的均匀性。
在一种实施例中，所述OLED显示面板1还包括设置在所述封装层40上的彩色滤光片60，所述彩色滤光片60包括相互间隔设置的黑色矩阵601和色阻块602，所述黑色矩阵601的制备材料为石墨。
其中，所述色阻块602用于处理入射到发光单元20中的环境光的反射光，并使得所述反射光变为与发光单元20发出光线同色的光线，消除了反光表面对环境光的反射，同时，所述黑色矩阵601在除发光单元20外的其他部位可以阻挡外界环境光的入射，减小外界环境光的反射，消除出射光的色偏，减小功耗。
其中，所述黑色矩阵601的制备材料设置为石墨，利用了石墨具有优良的导热性能及不透光性，且所述石墨的导热系数随温度升高而降低，在常温下，石墨的导热性能较好，所述石墨导热性超过钢、铁、铅等金属材料。
在本实施例中，通过将彩色滤光片60的黑色矩阵601材料设置为石墨，利用了石墨的高导热性及遮光特性，减小外界环境光的反射，消除出射光的色偏，减小功耗。
在一种实施例中，所述OLED显示面板1还包括层间绝缘层、平坦层，所述导热功能层50设置在所述层间绝缘层和所述平坦层之间。
其中，所述导热功能层50可以整面设置在所述层间绝缘层和所述平坦层之间。
其中，所述导热功能层50也可以设置在所述OLED显示面板1的部分区域，例如：在所述层间绝缘层上表面设置有凹陷区域，在所述凹陷内设置导热功能层50。
在本实施例中，通过仅在所述OLED显示面板1的部分区域设置导热功能层50，可以不增加现有OLED显示面板1的膜层厚度，同时增加了面内散热速率。
在一种实施例中，如图2所示，所述导热功能层50设置在所述黑色矩阵601与所述封装层40之间。
其中，所述导热功能层50在所述衬底10上的正投影与所述黑色矩阵601在所述衬底10上的正投影重合或重叠。
在本实施例中，通过将导热功能层50设置在黑色矩阵601下方，不会影响OLED显示面板1的透光率，同时导热功能层50的材料也可以选取透光材料，增大了所述导热功能层50的材料选取范围，降低了成本。
在一种实施例中，所述导热功能层50的制备材料可以为粘性材料，在所述黑色矩阵601与所述封装层40之间还起到增加粘性的效果。
在本实施例中，所述导热功能层50还起到了增大OLED面板内相邻膜层间结合力的效果。
在一种实施例中，如图3所示，所述导热功能层50设置在所述色阻块602与所述封装层40之间。
其中，所述导热功能层50的制备材料为透光材料。
其中，所述导热功能层50的制备材料可以为石墨烯。
在一种实施例中，所述彩色滤光片60还包括设置在所述黑色矩阵601上方的盖板603，所述盖板603与所述黑色矩阵601/所述色阻块602之间设置有所述导热功能层50。
其中，所述盖板603与所述黑色矩阵601之间对应设置所述导热功能层50，所述黑色矩阵601在所述衬底10上的正投影与所述导热功能层50在所述衬底10上的正投影重合或重叠，在起到增大散热效果的同时，不会影响OLED显示面板1的透光率。
其中，当黑色矩阵601的制备材料为石墨时，由于石墨与盖板603之间的结合力较弱，所述导热功能层50的制备材料可以为粘性材料，所述导热功能层50既具有良好的导热特性，也能增大黑色矩阵601与盖板603之间的结合力，缓解了黑色矩阵601与盖板603间容易发生剥离的技术问题。
在一种实施例中，如图4所示，所述黑色矩阵601/所述色阻块602上表面和下表面均设置有所述导热功能层50。
其中，所述黑色矩阵601和所述色阻块602的上表面和下表面均设置有所述导热功能层50。
其中，所述黑色矩阵601或所述色阻块602的上表面和下表面均设置有所述导热功能层50。
在本实施例中，通过设置多层所述导热功能层50，进一步增大面内温度散热效率，调节面内温度的均一性。
在一种实施例中，所述黑色矩阵601的制备材料可以为石墨，所述黑色矩阵601的制备材料不限定为石墨，还可以是其他具有和石墨相同特性的材料。
在一种实施例中，所述导热功能层50的制备材料可以为石墨烯或透明石墨材料，所述导热功能层50的制备材不限定为石墨烯或透明石墨材料，还可以是其他具有和石墨烯相同特性的材料。
在一种实施例中，如图5所示，所述黑色矩阵601上方设置有盖板603，所述黑色矩阵601朝向所述盖板603的一侧表面设置有光学胶70。
其中，所述黑色矩阵601的制备材料可以为石墨，由于石墨与盖板603的制备材料之间的结合力弱，因此，可以在黑色矩阵601朝向所述盖板603的一侧表面设置光学胶70，通过光学胶70来增强所述黑色矩阵601与所述盖板603之间的结合力。
在本实施例中，通过设置光学胶70，缓解了因黑色矩阵601设置为石墨后导致的膜层间结合力降低的技术问题，增大了盖板603与黑色矩阵601之间的结合力，缓解了彩色滤光片60中黑色矩阵601与盖板603之间的膜层剥离现象。
在一种实施例中，如图6所示，所述黑色矩阵601设置有凹槽80，所述光学胶70部分填充在所述凹槽80内。
其中，所述凹槽80的截面形状可以为矩形、三角形、梯形中的任一种。
其中，在所述黑色矩阵601可以设置多个所述凹槽80，相邻所述凹槽80间的间距可以相等。
其中，所述凹槽80可以阵列排布的设置在所述黑色矩阵601上。
在本实施例中，通过在黑色矩阵601上设置凹槽80，所述凹槽80内填充有所述光学胶70，通过在黑色矩阵601设置凹槽80，增大了光学胶70与黑色矩阵601之间的接触面积，进而利用光学胶70的粘附性增大了盖板603与黑色矩阵601之间的结合力。
在一种实施例中，所述OLED显示面板1包括彩色滤光片60，所述彩色滤光片60贴合在所述封装层40远离所述衬底10的一侧表面，所述彩色滤光片60包括黑色矩阵601、色阻块602、盖板603，所述黑色矩阵601靠近所述封装层40的一侧设置有所述光学胶70。
其中，所述凹槽80的截面形状可以为矩形、三角形、梯形中的任一种。
其中，在所述黑色矩阵601靠近所述封装层40的一侧表面可以设置多个所述凹槽80，相邻所述凹槽80间的间距可以相等。
其中，所述凹槽80可以阵列排布的设置在所述黑色矩阵601靠近所述封装层40的一侧表面。
在本实施例中，通过在黑色矩阵601靠近所述封装层40的一侧表面设置凹槽80，所述凹槽80内填充有所述光学胶70，通过在黑色矩阵601设置凹槽80，增大了光学胶70与黑色矩阵601之间的接触面积，进而利用光学胶70的粘附性增大了彩色滤光片60与封装层40之间的结合力。
综上所述，本实施例提供的OLED显示面板包括衬底、发光单元、像素定义层、以及封装层，其中，所述OLED显示面板还包括至少一导热功能层，所述导热功能层的制备材料为透明石墨材料；通过在OLED显示面板内设置导热功能层，所述导热功能层起到增加面内温度均匀性并加快面板散热的效果，提高了OLED显示面板的亮度及色度的均匀性，缓解了现有OLED显示面板存在面内温度不均匀的技术问题。
以上对本申请实施例所提供的一种OLED显示面板进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。

Claims (20)

  1. 一种OLED显示面板，其包括衬底、发光单元、像素定义层、以及封装层，其中，所述OLED显示面板还包括至少一导热功能层，所述导热功能层的制备材料为透明石墨材料。
  2. 如权利要求1所述的OLED显示面板，其中，所述导热功能层的制备材料为石墨烯。
  3. 如权利要求2所述的OLED显示面板，其中，所述石墨烯为多层结构。
  4. 如权利要求1所述的OLED显示面板，其中，所述OLED显示面板还包括设置在所述封装层上的彩色滤光片，所述彩色滤光片包括相互间隔设置的黑色矩阵和色阻块，所述黑色矩阵的制备材料为石墨。
  5. 如权利要求1所述的OLED显示面板，其中，所述OLED显示面板还包括层间绝缘层、平坦层，所述导热功能层设置在所述层间绝缘层和所述平坦层之间。
  6. 如权利要求5所述的OLED显示面板，其中，所述导热功能层整面设置在所述层间绝缘层和所述平坦层之间。
  7. 如权利要求5所述的OLED显示面板，其中，所述层间绝缘层上表面设置有凹陷区域，在所述凹陷区域内设置导热功能层。
  8. 如权利要求7所述的OLED显示面板，其中，所述凹陷区域的截面形状为矩形、梯形、三角形、菱形、平行四边形中的任一种。
  9. 如权利要求4所述的OLED显示面板，其中，所述导热功能层设置在所述黑色矩阵与所述封装层之间。
  10. 如权利要求9所述的OLED显示面板，其中，所述导热功能层在所述衬底上的正投影与所述黑色矩阵在所述衬底上的正投影重合或重叠。
  11. 如权利要求4所述的OLED显示面板，其中，所述导热功能层设置在所述色阻块与所述封装层之间。
  12. 如权利要求4所述的OLED显示面板，其中，所述彩色滤光片还包括设置在所述黑色矩阵上方的盖板，所述盖板与所述黑色矩阵/所述色阻块之间设置有所述导热功能层。
  13. 如权利要求4所述的OLED显示面板，其中，所述黑色矩阵/所述色阻块上表面和下表面均设置有所述导热功能层。
  14. 如权利要求4所述的OLED显示面板，其中，所述黑色矩阵上方设置有盖板，所述黑色矩阵朝向所述盖板的一侧表面设置有光学胶。
  15. 如权利要求14所述的OLED显示面板，其中，所述黑色矩阵设置有凹槽，所述光学胶部分填充在所述凹槽内。
  16. 如权利要求1所述的OLED显示面板，其中，所述导热功能层为绝缘材料，所述导热功能层可以设置在任一相邻膜层之间。
  17. 如权利要求1所述的OLED显示面板，其中，所述导热功能层为导电材料，所述导热功能层设置在任一相邻绝缘层之间。
  18. 如权利要求1所述的OLED显示面板，其中，还包括隔离层，所述隔离层为绝缘材料，所述隔离层设置在所述导热功能层的至少一侧表面。
  19. 如权利要求18所述的OLED显示面板，其中，所述隔离层围绕所述导热功能层设置。
  20. 如权利要求1所述的OLED显示面板，其中，所述导热功能层为缓冲层、层间绝缘层、平坦层、封装层中的任一层或多层。
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