WO2020147210A1 - 一种 oled 显示面板及其制备方法 - Google Patents

一种 oled 显示面板及其制备方法 Download PDF

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Publication number
WO2020147210A1
WO2020147210A1 PCT/CN2019/082643 CN2019082643W WO2020147210A1 WO 2020147210 A1 WO2020147210 A1 WO 2020147210A1 CN 2019082643 W CN2019082643 W CN 2019082643W WO 2020147210 A1 WO2020147210 A1 WO 2020147210A1
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Prior art keywords
transparent conductive
conductive metal
layer
metal layer
cushion layer
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French (fr)
Inventor
刘华龙
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Priority to US16/347,583 priority Critical patent/US10741798B1/en
Publication of WO2020147210A1 publication Critical patent/WO2020147210A1/zh
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H10K71/621—Providing a shape to conductive layers, e.g. patterning or selective deposition
    • 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

Definitions

  • the present invention relates to the field of display technology, in particular to an OLED display panel and a preparation method thereof.
  • Organic light emitting diodes (Organic Light Emitting Diode, OLED) have been widely used in the display field, lighting field, and smart wear field due to their good self-luminous characteristics, high contrast, and fast response.
  • the printing process is to prepare the dam 12 after the transparent conductive metal film 11 is patterned.
  • the edge portion of the transparent conductive metal film 11 overlaps the dam 12, and the The light emitting device is printed in the enclosed area.
  • the transparent conductive metal film 11 is a hydrophilic material
  • the surrounding dam 12 is a hydrophobic material. Because the side edges of the dam 12 in contact with the transparent conductive metal film 11 are less hydrophobic than the top of the dam, and the printed Ink droplets are liquid substances, so during the drying process, the ink film will "climb up” along the side of the bank. This will cause the edge film thickness to be much larger than the middle film thickness after drying. Circumstances, resulting in weak or non-luminous edge light, affecting display quality.
  • the thickness of the edge film layer is much larger than the thickness of the middle film layer, resulting in weak or no light emission at the edge.
  • An OLED display panel including:
  • a cofferdam arranged around the display area on the display device board
  • a transparent conductive metal layer disposed on the display device board and located inside the dam;
  • a light-emitting layer provided on the transparent conductive metal layer
  • the display device board is also provided with a cushion layer made of hydrophilic material around the display area, and the cofferdam is arranged on the cushion layer; the transparent conductive metal layer is close to the cushion layer.
  • the direction of the layer extends obliquely upward, and the edge of the transparent conductive metal layer is located on the cushion layer; the overall shape of the longitudinal section of the transparent conductive metal layer is an elliptical arc or a circular arc; the inner side of the cushion layer It is arranged obliquely downward in the direction close to the display area.
  • the slope of the inner side of the cushion layer is 5 to 45 degrees.
  • the thickness of the transparent conductive metal layer is 10-200 nanometers.
  • the thickness of the cushion layer is 20-200 nanometers.
  • An OLED display panel including:
  • a cofferdam arranged around the display area on the display device board
  • a transparent conductive metal layer disposed on the display device board and located inside the dam;
  • a light-emitting layer provided on the transparent conductive metal layer
  • the display device board is also provided with a cushion layer made of hydrophilic material around the display area, and the cofferdam is arranged on the cushion layer; the transparent conductive metal layer is close to the cushion layer.
  • the direction of the layer extends obliquely upward, and the edge of the transparent conductive metal layer is located on the cushion layer.
  • the overall shape of the longitudinal section of the transparent conductive metal layer is an elliptical arc or a circular arc.
  • the inner side of the cushion layer is arranged obliquely downward in a direction close to the display area.
  • the slope of the inner side of the cushion layer is 5 to 45 degrees.
  • the thickness of the transparent conductive metal layer is 10-200 nanometers.
  • the thickness of the cushion layer is 20-200 nanometers.
  • the present invention also provides a method for manufacturing an OLED display panel, including the following steps:
  • the overall shape of the longitudinal section of the transparent conductive metal layer is an elliptical arc or a circular arc.
  • the inner side of the cushion layer is arranged obliquely downward in a direction close to the display area.
  • the slope of the inner side of the cushion layer is 5 to 45 degrees.
  • the thickness of the transparent conductive metal layer is 10-200 nanometers.
  • the thickness of the cushion layer is 20-200 nanometers.
  • the height of the edge of the transparent conductive metal layer is raised by the cushion layer, so that the height of the center part of the transparent conductive metal layer is lower than the height of the edge.
  • the film thickness of the edge part of the light-emitting layer is similar to or equal to the film thickness of the central part, so that the light emission of the edge part and the central part of the light-emitting layer is basically the same, thereby improving The display quality of the OLED display panel.
  • Figure 1 is a schematic diagram of an organic light emitting device in the background of the present invention.
  • FIG. 2 is a schematic diagram of the structure of an OLED display panel in a specific embodiment of the present invention.
  • FIG. 3 is a schematic diagram of the preparation steps of an OLED display panel in a specific embodiment of the present invention.
  • 4 to 6 are schematic diagrams of the manufacturing process of the OLED display panel in specific embodiments of the present invention.
  • the present invention addresses the technical problem of weak or non-luminous edge light emission when the thickness of the edge film layer is much greater than the thickness of the middle film layer when the light emitting device is prepared by printing technology in the existing OLED display panel.
  • the present invention can solve the above-mentioned problems.
  • the OLED display panel includes a display device board 21, a dam 22 arranged around the display area on the display device board 21, arranged on the display device board 21 and A transparent conductive metal layer 23 (ITO) located on the inner side of the dam 22, and a light emitting layer 24 provided on the transparent conductive metal layer 23.
  • ITO transparent conductive metal layer 23
  • the display device board 21 is further provided with a cushion layer 25 made of a hydrophilic material around the display area 26, and the cofferdam 22 is provided on the cushion layer 25; the transparent conductive metal layer 23 extends obliquely upward in the direction close to the cushion layer 25, and the edge of the transparent conductive metal layer 23 is located on the cushion layer 25.
  • the material of the cushion layer 25 may be a hydrophilic organic substance or a hydrophilic inorganic material; in one embodiment, the material of the cushion layer 25 is silicon oxide or silicon nitride.
  • the height of the edge of the transparent conductive metal layer 23 is raised by the cushion layer 25 so that the height of the central part of the transparent conductive metal layer 23 is lower than the height of the edge.
  • the thickness of the cushion layer 25 can be controlled so that the film thickness of the edge portion of the light-emitting layer 24 is similar to or equal to the film thickness of the center portion, so that the edge portion of the light-emitting layer 24 is Part of the light emission is basically the same, thereby improving the display quality of the OLED display panel.
  • the overall shape of the longitudinal section of the transparent conductive metal layer 23 is an elliptical arc or a circular arc.
  • the contact area between the transparent conductive metal layer 23 and the light-emitting layer 24 is increased, thereby increasing the pixel aperture ratio.
  • the inner side of the cushion layer 25 is arranged obliquely downward in a direction close to the display area 26, and the edge of the transparent conductive metal layer 23 extends along the inner side of the cushion layer 25 to above the cushion layer 25 surface.
  • the climbing height of the edge of the light-emitting layer 24 can be adjusted by controlling the slope of the cushion layer 25, so that the film thickness of the edge portion of the light-emitting layer 24 is substantially the same as the film thickness of the central portion.
  • the slope of the inner side of the cushion layer 25 is 5 to 45 degrees.
  • the thickness of the cushion layer 25 is 20 to 200 nanometers
  • the thickness of the transparent conductive metal layer 23 is 10 to 200 nanometers
  • the thickness of the dam 22 is 1 to 2 millimeters.
  • the present invention also provides a method for manufacturing an OLED display panel, as shown in FIG. 3, including the following steps:
  • a transparent conductive metal layer 23 is formed on the inner side of the cushion layer 25, the transparent conductive metal layer 23 extends obliquely upward in a direction close to the cushion layer 25, and the edge of the transparent conductive metal layer 23 is located The cushion layer 25;
  • FIGS. 4 to 6 are schematic diagrams of the manufacturing process of the OLED display panel.
  • a transparent conductive metal layer 23 is formed on the inner side of the cushion layer 25, and the edge of the transparent conductive metal layer 23 Extend to the cushion layer 25.
  • the material of the cushion layer 25 may be a hydrophilic organic substance or a hydrophilic inorganic material; in one embodiment, the material of the cushion layer 25 is silicon oxide or silicon nitride.
  • the overall shape of the longitudinal section of the transparent conductive metal layer 23 is an elliptical arc or a circular arc.
  • the inner side of the cushion layer 25 is arranged obliquely downward in a direction close to the display area 26.
  • the slope of the inner side of the cushion layer 25 is 5 to 45 degrees.
  • the height of the edge of the transparent conductive metal layer 23 is raised by the cushion layer 25 so that the height of the central part of the transparent conductive metal layer 23 is lower than the height of the edge.
  • the thickness and slope of the cushion layer 25 can be controlled so that the film thickness of the edge portion of the light-emitting layer 24 is similar or equal to the film thickness of the central portion, so that the edge portion of the light-emitting layer 24
  • the luminescence of the central part is basically the same, thereby improving the display quality of the OLED display panel.
  • the thickness of the cushion layer 25 is 20-200 nanometers
  • the thickness of the transparent conductive metal layer 23 is 10-200 nanometers.
  • a cofferdam 22 arranged around the display area 26 is formed on the cushion layer 25; wherein the thickness of the cofferdam 22 is 1 to 2 mm.
  • droplets are printed on the transparent conductive metal layer 23 by inkjet printing. After the droplets are dried, a light-emitting layer 24 with an elliptical or circular shape as a whole is formed. The film at the edge of the light-emitting layer 24 The layer thickness is equal to or similar to the film thickness at the center.
  • the beneficial effect of the present invention is that the height of the edge of the transparent conductive metal layer 23 is raised by the cushion layer 25, so that the height of the center part of the transparent conductive metal layer 23 is lower than the height of the edge, and the transparent conductive metal layer 23 is printed by inkjet printing.
  • the thickness and slope of the underlayer 25 can be controlled so that the film thickness of the edge portion of the light-emitting layer 24 is similar to or equal to the film thickness of the central portion, so that the edge portion of the light-emitting layer 24 is Part of the light emission is basically the same, thereby improving the display quality of the OLED display panel.
  • the transparent conductive metal layer 23 in the shape of an elliptical arc or a circular arc, the contact area between the transparent conductive metal layer 23 and the light emitting layer 24 is increased, thereby increasing Pixel aperture ratio.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

本发明提供一种OLED显示面板，包括显示器件板、围堰、设置在显示器件板上的透明导电金属层以及设置在所述透明导电金属层上的发光层；其中，显示器件板上绕显示区还设置有由亲水性材料制成的垫层，围堰设置在垫层上；透明导电金属层向靠近垫层的方向倾斜向上延伸，并且，透明导电金属层的边缘位于垫层上。

Description

一种OLED显示面板及其制备方法 技术领域
本发明涉及显示技术领域，尤其涉及一种OLED显示面板及其制备方法。
 背景技术
有机发光器件(Organic Light Emitting Diode，OLED)以其良好的自发光特性、高的对比度、快速响应等优势，在显示领域、照明领域以及智能穿戴领域等都得到了广泛的应用。
如图1所示，采用打印技术制备发光器件时，打印制程是在透明导电金属薄膜11图形化后制备围坝12，透明导电金属薄膜11的边缘部分与围坝12重合，在围坝12所围住的区域中打印发光器件。
然而，透明导电金属薄膜11为亲水性物质，周围围坝12为疏水性物质，由于与透明导电金属薄膜11接触的围坝12的侧面边缘的疏水性小于其顶部的疏水性，而且打印的墨滴是液态物质，所以在干燥的过程中会出现ink膜层沿着bank侧面往上“爬坡”的现象，这样就会造成干燥后出现边缘膜层的厚度远大于中间膜层的厚度的情况，从而导致边缘发光较弱或不发光的问题，影响显示品质。
 技术问题
采用打印技术制备发光器件时，会出现边缘膜层的厚度远大于中间膜层的厚度的情况，从而导致边缘发光较弱或不发光。
 技术解决方案
一种OLED显示面板，包括：
显示器件板；
绕所述显示器件板上的显示区设置的围堰；
设置在所述显示器件板上且位于所述围堰的内侧的透明导电金属层；以及，
设置在所述透明导电金属层上的发光层；
其中，所述显示器件板上绕所述显示区还设置有由亲水性材料制成的垫层，所述围堰设置在所述垫层上；所述透明导电金属层向靠近所述垫层的方向倾斜向上延伸，并且，所述透明导电金属层的边缘位于所述垫层上；所述透明导电金属层的纵截面的整体形状呈椭圆弧状或圆弧状；所述垫层的内侧向靠近所述显示区的方向倾斜向下设置。
进一步的，所述垫层的内侧的坡度为5～45度。
进一步的，所述透明导电金属层的厚度为10～200纳米。
进一步的，所述垫层的厚度为20～200纳米。
一种OLED显示面板，包括：
显示器件板；
绕所述显示器件板上的显示区设置的围堰；
设置在所述显示器件板上且位于所述围堰的内侧的透明导电金属层；以及，
设置在所述透明导电金属层上的发光层；
其中，所述显示器件板上绕所述显示区还设置有由亲水性材料制成的垫层，所述围堰设置在所述垫层上；所述透明导电金属层向靠近所述垫层的方向倾斜向上延伸，并且，所述透明导电金属层的边缘位于所述垫层上。
进一步的，所述透明导电金属层的纵截面的整体形状呈椭圆弧状或圆弧状。
进一步的，所述垫层的内侧向靠近所述显示区的方向倾斜向下设置。
进一步的，所述垫层的内侧的坡度为5～45度。
进一步的，所述透明导电金属层的厚度为10～200纳米。
进一步的，所述垫层的厚度为20～200纳米。
本发明还提供一种OLED显示面板的制备方法，包括以下步骤：
S10、提供一显示器件板；
S20、使用亲水性材料在所述显示器件板上形成绕显示区设置的垫层；
S30、在所述垫层的内侧形成透明导电金属层，所述透明导电金属层向靠近所述垫层的方向倾斜向上延伸，并且，所述透明导电金属层的边缘位于所述垫层上；
S40、在所述垫层上形成绕显示区设置的围堰；
S50、在所述透明导电金属层上形成发光层。
进一步的，所述透明导电金属层的纵截面的整体形状呈椭圆弧状或圆弧状。
进一步的，所述垫层的内侧向靠近所述显示区的方向倾斜向下设置。
进一步的，所述垫层的内侧的坡度为5～45度。
进一步的，所述透明导电金属层的厚度为10～200纳米。
进一步的，所述垫层的厚度为20～200纳米。
 有益效果
通过垫层抬高所述透明导电金属层的边缘高度，使透明导电金属层的中心部分的高度低于边缘高度，通过喷墨打印在透明导电金属层上形成发光层时，虽然仍会有爬坡现象，但可以通过控制垫层的厚度，使得发光层的边缘部分的膜层厚度与中心部分的膜层厚度相近或相等，从而使得发光层的边缘部分与中心部分的发光基本一致，从而提高OLED显示面板的显示品质。
 附图说明
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是发明的一些实施例，对于本领域普通技术人员来讲，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为本发明背景技术中有机发光器件的示意图；
图2为本发明具体实施方式中OLED显示面板的结构示意图；
图3为本发明具体实施方式中OLED显示面板的制备步骤示意图；
图4至图6为本发明具体实施方式中OLED显示面板的制备流程示意图。
附图标记：
11、透明导电金属薄膜；12、围坝；
21、显示器件板；22、围堰；23、透明导电金属层；24、发光层；25、垫层；26、显示区。
 本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。在图中，结构相似的单元是用以相同标号表示。
本发明针对现有的OLED显示面板中，采用打印技术制备发光器件时，会出现边缘膜层的厚度远大于中间膜层的厚度的情况，从而导致边缘发光较弱或不发光的技术问题。本发明可以解决上述问题。
一种OLED显示面板，如图2所示，所述OLED显示面板包括显示器件板21、绕所述显示器件板21上的显示区设置的围堰22、设置在所述显示器件板21上且位于所述围堰22的内侧的透明导电金属层23（ITO），以及，设置在所述透明导电金属层23上的发光层24。
其中，所述显示器件板21上绕所述显示区26还设置有由亲水性材料制成的垫层25，所述围堰22设置在所述垫层25上；所述透明导电金属层23向靠近所述垫层25的方向倾斜向上延伸，并且，所述透明导电金属层23的边缘位于所述垫层25上。
需要说明的是，所述垫层25的制成材料可以为亲水性有机物或亲水性无机物；在一实施方式中，所述垫层25的制成材料为氧化硅或氮化硅。
通过垫层25抬高所述透明导电金属层23的边缘高度，使透明导电金属层23的中心部分的高度低于边缘高度，通过喷墨打印在透明导电金属层23上形成发光层24时，虽然仍会有爬坡现象，但可以通过控制垫层25的厚度，使得发光层24的边缘部分的膜层厚度与中心部分的膜层厚度相近或相等，从而使得发光层24的边缘部分与中心部分的发光基本一致，从而提高OLED显示面板的显示品质。
具体的，所述透明导电金属层23的纵截面的整体形状呈椭圆弧状或圆弧状。
通过形成呈椭圆弧形或圆弧形的透明导电金属层23，增加透明导电金属层23与发光层24的接触面积，从而增大像素开口率。
具体的，所述垫层25的内侧向靠近所述显示区26的方向倾斜向下设置，所述透明导电金属层23的边缘沿所述垫层25的内侧延伸至所述垫层25的上表面。
可通过控制垫层25的坡度来调整发光层24的边缘的爬坡高度，从而使发光层24的边缘部分的膜层厚度与中心部分的膜层厚度基本一致。
进一步的，所述垫层25的内侧的坡度为5～45度。
具体的，所述垫层25的厚度为20～200纳米，所述透明导电金属层23的厚度为10～200纳米，所述围堰22的厚度为1～2毫米。
基于上述OLED显示面板，本发明还提供一种OLED显示面板的制备方法，如图3所示，包括以下步骤：
S10、提供一显示器件板21；
S20、使用亲水性材料在所述显示器件板21上形成绕显示区26设置的垫层25；
S30、在所述垫层25的内侧形成透明导电金属层23，所述透明导电金属层23向靠近所述垫层25的方向倾斜向上延伸，并且，所述透明导电金属层23的边缘位于所述垫层25上；
S40、在所述垫层25上形成绕显示区26设置的围堰22；
S50、在所述透明导电金属层23上形成发光层24。
参见图4至图6，图4至图6为OLED显示面板的制备流程示意图。
如图4所示，在所述显示器件板21上形成绕显示区26设置的垫层25后，在所述垫层25的内侧形成透明导电金属层23，所述透明导电金属层23的边缘延伸至所述垫层25上。
需要说明的是，所述垫层25的制成材料可以为亲水性有机物或亲水性无机物；在一实施方式中，所述垫层25的制成材料为氧化硅或氮化硅。
具体的，所述透明导电金属层23的纵截面的整体形状呈椭圆弧状或圆弧状。
具体的，所述垫层25的内侧向靠近所述显示区26的方向倾斜向下设置。
进一步的，所述垫层25的内侧的坡度为5～45度。
通过垫层25抬高所述透明导电金属层23的边缘高度，使透明导电金属层23的中心部分的高度低于边缘高度，通过喷墨打印在透明导电金属层23上形成发光层24时，虽然仍会有爬坡现象，但可以通过控制垫层25的厚度和坡度，使得发光层24的边缘部分的膜层厚度与中心部分的膜层厚度相近或相等，从而使得发光层24的边缘部分与中心部分的发光基本一致，从而提高OLED显示面板的显示品质。
具体的，所述垫层25的厚度为20～200纳米，所述透明导电金属层23的厚度为10～200纳米。
如图5所示，在所述垫层25上形成绕显示区26设置的围堰22；其中，所述围堰22的厚度为1～2毫米。
如图6所示，通过喷墨打印的方式在透明导电金属层23上打印液滴，液滴干燥后形成整体呈椭圆弧形或圆弧形的发光层24，发光层24的边缘部位的膜层厚度与中心部位的膜层厚度相等或相近。
本发明的有益效果为：通过垫层25抬高所述透明导电金属层23的边缘高度，使透明导电金属层23的中心部分的高度低于边缘高度，通过喷墨打印在透明导电金属层23上形成发光层24时，可以通过控制垫层25的厚度和坡度，使得发光层24的边缘部分的膜层厚度与中心部分的膜层厚度相近或相等，从而使得发光层24的边缘部分与中心部分的发光基本一致，从而提高OLED显示面板的显示品质，同时通过形成呈椭圆弧形或圆弧形的透明导电金属层23，增加透明导电金属层23与发光层24的接触面积，从而增大像素开口率。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (16)

  1. 一种OLED显示面板，其中，所述OLED显示面板包括：
    显示器件板；
    绕所述显示器件板上的显示区设置的围堰；
    设置在所述显示器件板上且位于所述围堰的内侧的透明导电金属层；以及，
    设置在所述透明导电金属层上的发光层；
    其中，所述显示器件板上绕所述显示区还设置有由亲水性材料制成的垫层，所述围堰设置在所述垫层上；所述透明导电金属层向靠近所述垫层的方向倾斜向上延伸，并且，所述透明导电金属层的边缘位于所述垫层上；所述透明导电金属层的纵截面的整体形状呈椭圆弧状或圆弧状；所述垫层的内侧向靠近所述显示区的方向倾斜向下设置。
  2. 根据权利要求1所述的OLED显示面板，其中，所述垫层的内侧的坡度为5～45度。
  3. 根据权利要求1所述的OLED显示面板，其中，所述透明导电金属层的厚度为10～200纳米。
  4. 根据权利要求3所述的OLED显示面板，其中，所述垫层的厚度为20～200纳米。
  5. 一种OLED显示面板，其中，所述OLED显示面板包括：
    显示器件板；
    绕所述显示器件板上的显示区设置的围堰；
    设置在所述显示器件板上且位于所述围堰的内侧的透明导电金属层；以及，
    设置在所述透明导电金属层上的发光层；
    其中，所述显示器件板上绕所述显示区还设置有由亲水性材料制成的垫层，所述围堰设置在所述垫层上；所述透明导电金属层向靠近所述垫层的方向倾斜向上延伸，并且，所述透明导电金属层的边缘位于所述垫层上。
  6. 根据权利要求5所述的OLED显示面板，其中，所述透明导电金属层的纵截面的整体形状呈椭圆弧状或圆弧状。
  7. 根据权利要求5所述的OLED显示面板，其中，所述垫层的内侧向靠近所述显示区的方向倾斜向下设置。
  8. 根据权利要求7所述的OLED显示面板，其中，所述垫层的内侧的坡度为5～45度。
  9. 根据权利要求5所述的OLED显示面板，其中，所述透明导电金属层的厚度为10～200纳米。
  10. 根据权利要求9所述的OLED显示面板，其中，所述垫层的厚度为20～200纳米。
  11. 一种OLED显示面板的制备方法，其中，包括以下步骤：
    S10、提供一显示器件板；
    S20、使用亲水性材料在所述显示器件板上形成绕显示区设置的垫层；
    S30、在所述垫层的内侧形成透明导电金属层，所述透明导电金属层向靠近所述垫层的方向倾斜向上延伸，并且，所述透明导电金属层的边缘位于所述垫层上；
    S40、在所述垫层上形成绕显示区设置的围堰；
    S50、在所述透明导电金属层上形成发光层。
  12. 根据权利要求11所述的OLED显示面板的制备方法，其中，所述透明导电金属层的纵截面的整体形状呈椭圆弧状或圆弧状。
  13. 根据权利要求11所述的OLED显示面板的制备方法，其中，所述垫层的内侧向靠近所述显示区的方向倾斜向下设置。
  14. 根据权利要求13所述的OLED显示面板的制备方法，其中，所述垫层的内侧的坡度为5～45度。
  15. 根据权利要求11所述的OLED显示面板的制备方法，其中，所述透明导电金属层的厚度为10～200纳米。
  16. 根据权利要求15所述的OLED显示面板的制备方法，其中，所述垫层的厚度为20～200纳米。
PCT/CN2019/082643 2019-01-18 2019-04-15 一种 oled 显示面板及其制备方法 Ceased WO2020147210A1 (zh)

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