WO2021189562A1 - 显示面板及其制备方法、掩膜板 - Google Patents

显示面板及其制备方法、掩膜板 Download PDF

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Publication number
WO2021189562A1
WO2021189562A1 PCT/CN2020/084538 CN2020084538W WO2021189562A1 WO 2021189562 A1 WO2021189562 A1 WO 2021189562A1 CN 2020084538 W CN2020084538 W CN 2020084538W WO 2021189562 A1 WO2021189562 A1 WO 2021189562A1
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pixel
sub
area
region
pixels
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PCT/CN2020/084538
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English (en)
French (fr)
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彭旭东
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武汉华星光电半导体显示技术有限公司
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Priority to US16/958,742 priority Critical patent/US20230142409A1/en
Priority to EP20756741.3A priority patent/EP4131388A1/en
Publication of WO2021189562A1 publication Critical patent/WO2021189562A1/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
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/352—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels the areas of the RGB subpixels being different
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/04—Coating on selected surface areas, e.g. using masks
    • C23C14/042—Coating on selected surface areas, e.g. using masks using masks
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/24—Vacuum evaporation
    • 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
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H10K71/10—Deposition of organic active material
    • H10K71/16—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering
    • H10K71/164—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering using vacuum deposition
    • 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
    • H10K71/10—Deposition of organic active material
    • H10K71/16—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering
    • H10K71/166—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering using selective deposition, e.g. using a mask

Definitions

  • the invention relates to the field of display, in particular to a display panel, a preparation method thereof, and a mask plate.
  • the light-emitting layer in OLED mainly uses organic light-emitting materials in a high vacuum environment. When vapor deposition is performed, the organic light-emitting layer emits light when electric charges pass.
  • a high-precision metal mask (FMM) is used to coat the sub-pixels of the three colors of RGB under the substrate, and the sub-pixel areas of undesired colors and the non-coated areas are coated isolation.
  • FMM high-precision metal mask
  • the sub-pixels are usually arranged side by side.
  • the first sub-pixel 110, the second sub-pixel 120, and the third sub-pixel 130 constitute a pixel 100, and each sub-pixel is rectangle.
  • the mainstream RGB arrangement has been difficult to meet the production needs, reducing the pixel definition layer gap and The aperture size to increase the pixel density also has problems such as color mixing. Therefore, it is a way to consider a new pixel arrangement to meet the production requirements of high PPI.
  • the purpose of the present invention is to solve the technical problem that the pixels of the display device are difficult to improve when the pixels are vapor-deposited on the conventional mask.
  • each pixel unit includes four pixels; each pixel includes a first sub-pixel, a second sub-pixel, and a third sub-pixel; the first sub-pixel in each pixel unit
  • the pixels are arranged adjacently and form a first pixel sub-region; in two adjacent pixel units, the second sub-pixel in one pixel unit and the second sub-pixel in the other pixel unit are arranged adjacently and form a second pixel unit.
  • a third sub-pixel in one pixel unit is adjacent to a third sub-pixel in another pixel unit to form a third pixel sub-region.
  • the pixel is a square; the first sub-pixel is a triangle; the second sub-pixel is a triangle; the third sub-pixel is a triangle; and the triangle includes a right-angled triangle.
  • the two right-angled sides of the first sub-pixel and the two squares of the square where the pixel is located are all right triangles.
  • Right-angled sides are correspondingly arranged;
  • the hypotenuse of the second sub-pixel corresponds to and is parallel to one side of the pixel, and is set at the edge of the pixel unit where the pixel is located;
  • the hypotenuse of the third sub-pixel is corresponding and parallel On one side of the pixel and at the edge of the pixel unit where the pixel is located.
  • the right angles of the first sub-pixels of the four pixels are arranged opposite to each other; the first pixel sub-region is a first rectangular area, and the first rectangular area is located at the center of the pixel unit Place.
  • the second pixel sub-region is a second rectangular area; in two adjacent pixel units, the third pixel sub-region is a third rectangular area.
  • the area of the second sub-pixel is equal to the area of the third sub-pixel; the area of the first sub-pixel is equal to the difference between the area of the second sub-pixel and the area of the third sub-pixel. with.
  • each pixel unit a second sub-pixel is arranged adjacent to a third sub-pixel; two second sub-pixels are arranged at intervals; and two third sub-pixels are arranged at intervals.
  • the present invention also provides a mask for preparing the display panel as described above, comprising a plate body, having a shielding area and an opening area, the opening area including a first opening area and a second opening Region and a third opening region; wherein the shape and size of the first opening region corresponds to the first pixel subregion of the display panel; the shape and size of the second opening region corresponds to the second pixel subregion of the display panel Area corresponding; the shape and size of the third opening area corresponds to the third pixel sub-area of the display panel.
  • the shapes of the first opening area, the second opening area, and the third opening area are all rectangles or rhombuses.
  • the present invention also provides a method for manufacturing a display panel, which includes the following steps: a substrate providing step, providing a substrate; a mask placement step, placing a mask as claimed in claim 8 so that The first opening of the mask corresponds to the first pixel sub-area of the substrate; the second opening of the mask corresponds to the second pixel sub-area of the substrate; the third opening of the mask Corresponding to the third pixel sub-region of the substrate; the vapor deposition step is to vapor-deposit the substrate, that is, four adjacent first sub-pixels are formed in the first pixel sub-region, and in the second pixel sub-region Two adjacent second sub-pixels are formed, two adjacent third sub-pixels are formed in the third pixel sub-region, one first sub-pixel, one second sub-pixel, and one third sub-pixel are adjacent Forming a pixel unit; and a mask removing step, removing the mask.
  • the technical effect of the present invention is that the sub-pixels of the same color are close to each other and symmetrical to each other, which can reduce the color mixing phenomenon caused during the evaporation process and improve the display effect of the display device.
  • a mask opening corresponds to a rectangular area composed of sub-pixels of the same color, which improves the pixel density of the display device.
  • FIG. 1 is an arrangement of pixels in a display panel in the prior art
  • FIG. 3 is a schematic diagram of a mask according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a manufacturing method of a display panel according to an embodiment of the present invention.
  • Pixel unit 2. Pixel definition layer;
  • Mask plate 20. Plate body; 30. Blocking area; 40. Opening area; 401. First opening area; 402. Second opening area; 403; Third opening area.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present invention, “plurality” means two or more than two, unless otherwise specifically defined.
  • the "above” or “below” of the first feature of the second feature may include direct contact between the first and second features, or may include the first and second features Not in direct contact but through other features between them.
  • the "above”, “above” and “above” of the first feature on the second feature include the first feature directly above and obliquely above the second feature, or it simply means that the first feature is higher in level than the second feature.
  • the “below”, “below” and “below” of the second feature of the first feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.
  • an embodiment of the present invention provides a display device.
  • the display device includes a display panel.
  • the display panel includes a plurality of pixel units 1 and a pixel definition layer 2.
  • the pixel unit 1 is a rectangular area, and the interval between each pixel unit 1 is the pixel definition layer 2.
  • the pixel definition layer 2 is used to define the size of the light-emitting layer, that is, the size of the pixel unit.
  • Each pixel unit 1 includes four pixels 11, each pixel 11 is square in shape, and a pixel definition layer 2 is provided between each pixel 11.
  • Each pixel 11 includes three sub-pixels, which are a first sub-pixel 111, a second sub-pixel 112, and a third sub-pixel 113, respectively.
  • the first sub-pixels 111 in each pixel unit 1 are arranged oppositely.
  • the shape of the first sub-pixels 111 is a triangle. In this embodiment, it is a right-angled triangle. They are arranged oppositely and symmetrical to each other.
  • the two right-angled sides of the first sub-pixel 111 are respectively arranged opposite to the two adjacent sides of the pixel 11 where they are located, and are located at the center of the pixel unit 1 where they are located.
  • the four first sub-pixels 111 constitute the first pixel sub-pixel.
  • Area 101, the first pixel sub-area 101 is a first rectangular area.
  • the first pixel sub-area 101 is located at the center of the pixel unit 1.
  • the sub-pixels of the same color are close in distance and symmetrically distributed, which can reduce the evaporation process The resulting color mixing phenomenon improves the display effect of the display panel.
  • the shape of the second sub-pixel 112 is a triangle, and in this embodiment, it is preferably a right triangle.
  • the hypotenuse of the second sub-pixel 112 is attached to one side of the pixel 11, and its right angle is directly opposite to the second sub-pixel 111 and is located at the edge of the pixel unit 1 where the pixel 11 is located.
  • the second sub-pixels 112 are arranged at intervals. In two adjacent pixel units 1, the second sub-pixel 112 in one pixel unit 1 is adjacent to the second sub-pixel 112 in the other pixel unit 1 and forms a second pixel sub-region 102.
  • the hypotenuses of the two second sub-pixels 112 are arranged oppositely, and the two second sub-pixels 112 are arranged symmetrically to form the second pixel sub-region 102.
  • the second pixel sub-region is a second rectangular area, and the sub-pixels of the same color are close in distance.
  • the symmetrical distribution can reduce color mixing caused by the evaporation process and improve the display effect of the display panel.
  • the shape of the third sub-pixel 113 is a triangle, and in this embodiment, it is preferably a right triangle.
  • the hypotenuse of the third sub-pixel 113 is attached to one side of the pixel 11, and its right angle is directly opposite to the second sub-pixel 111 and is located at the edge of the pixel unit 1 where the pixel 11 is located.
  • the third sub-pixels 113 are arranged at intervals, and the second sub-pixels 112 and the third sub-pixels 113 are arranged adjacent to each other.
  • the third sub-pixel 113 in one pixel unit 1 is arranged adjacent to the third sub-pixel 113 in another pixel unit 1 and forms a third pixel sub-region 103.
  • the hypotenuses of the two third sub-pixels 113 are arranged oppositely, the two third sub-pixels 113 are arranged symmetrically, and the third pixel sub-region 103 is a third rectangular area.
  • the sub-pixels of the same color are close in distance and symmetrically distributed, which can reduce The color mixing phenomenon caused by the evaporation process improves the display effect of the display panel.
  • the first sub-pixel 111 is a blue sub-pixel
  • the second sub-pixel 112 is a red sub-pixel
  • the third sub-pixel 113 is a green sub-pixel.
  • the size of the second sub-pixel 112 is the same as the size of the second sub-pixel 113.
  • the area of the first sub-pixel 111 is larger than the area of the second sub-pixel 112 and larger than the area of the third sub-pixel 113.
  • the first sub-pixel The size of 111 is equal to the sum of the size of the second sub-pixel 112 and the size of the third sub-pixel 113. Because among the current organic light-emitting materials, the light-emitting efficiency and lifespan of blue light materials are significantly lower than that of red light-emitting materials and green light-emitting materials, a larger pixel area can effectively improve the luminous efficiency of the OLED display device and prolong its service life.
  • a pixel definition layer 2 is provided between the first sub-pixel 111, the second sub-pixel 112, and the third sub-pixel 113, and a sub-pixel is provided in a through hole of the pixel definition layer 2, three different colors
  • the sub-pixels constitute a pixel, and the four pixels constitute a pixel unit 1.
  • the technical effect of the display device of this embodiment is that the sub-pixels of the same color are close to each other and are arranged symmetrically to each other, which can reduce the color mixing phenomenon caused during the evaporation process and improve the display effect of the display device.
  • this embodiment also provides a mask plate 10, which is used to prepare the display panel as described above.
  • the mask plate 10 includes a plate body 20 having a shielding area 30 and ⁇ 40 ⁇ Opening area 40.
  • the opening area 40 includes a first opening area 401, a second opening area 402, and a third opening area 403.
  • the shape and size of the first opening area 401 corresponds to the first pixel sub-area 101 of the display panel;
  • the shape and size correspond to the second pixel sub-region 102 of the display panel;
  • the shape and size of the third opening region 403 correspond to the third pixel sub-region 103 of the display panel.
  • the shapes of the first opening area 401, the second opening area 402, and the third opening area 403 are all rectangular.
  • the technical effect of the mask in this embodiment is that one opening of the mask corresponds to a pixel sub-region composed of sub-pixels of the same color, that is, one opening corresponds to two sub-pixels, which can effectively increase the pixel density of the display device.
  • this embodiment also provides a method for manufacturing a display panel, including steps S1 to S4.
  • the substrate providing step is to provide a substrate, the substrate includes a pixel definition layer, the pixel definition layer is provided with a plurality of through holes, four first through holes constitute a first pixel sub-area, and two second through holes constitute a first pixel subarea.
  • Two pixel sub-regions, two third through holes constitute a third pixel sub-region, the area of the first pixel sub-region is larger than the area of the second pixel sub-region, and the area of the first pixel sub-region is larger than the area of the first pixel sub-region.
  • the area of the third pixel sub-region, the area of the second pixel sub-region is equal to the area of the third pixel sub-region.
  • the first pixel sub-region is used to vaporize a first sub-pixel
  • the second pixel sub-region is used to vaporize a second sub-pixel
  • the third pixel sub-region is used to vaporize a third sub-pixel.
  • the shapes of the first pixel sub-region, the second pixel sub-region and the third pixel sub-region are all rectangular regions.
  • the mask placement step is to place the mask as described above on top of the substrate, which closely adheres to the substrate.
  • the mask includes a first opening area, a second opening area, and a third opening area.
  • the first opening area is disposed opposite to the first rectangular area for vapor deposition of first sub-pixels.
  • the sub-pixels are blue sub-pixels.
  • the second opening area is disposed opposite to the second rectangular area for vapor deposition of a second sub-pixel, and the second sub-pixel is a red sub-pixel.
  • the third opening area is disposed opposite to the third rectangular area for vapor deposition of a third sub-pixel, and the third sub-pixel is a green sub-pixel.
  • One opening area of the mask corresponds to a pixel sub-area composed of sub-pixels of the same color.
  • the pixel sub-area is a rectangular area, that is, one opening area corresponds to two sub-pixels, which can effectively increase the pixel density of the display device.
  • S3 vapor deposition step performing vapor deposition processing on the substrate, forming four adjacent first sub-pixels in the first pixel sub-region, and forming two adjacent second sub-pixels in the second pixel sub-region
  • two adjacent third sub-pixels are formed in the third pixel sub-region, and one adjacent first sub-pixel, one second sub-pixel, and one third sub-pixel form a pixel unit.
  • the technical effect of the manufacturing method of the display panel of this embodiment is that one opening of the mask corresponds to a rectangular area composed of sub-pixels of the same color, that is, one opening corresponds to two sub-pixels, which can effectively increase the pixel density of the display device.

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Abstract

一种显示面板及其制备方法、掩膜板（10），显示面板包括若干像素单元（1）；每一像素单元（1）包括四个像素（11）；每一像素（11）包括第一子像素（111）、第二子像素（112）以及第三子像素（113）；每一像素单元（1）中的第一子像素（111）相对设置。

Description

显示面板及其制备方法、掩膜板
本申请要求于2020年03月26日提交中国专利局、申请号为202010222183.7、发明名称为“显示面板及其制备方法、掩膜板”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及显示领域，特别涉及一种显示面板及其制备方法、掩膜板。
 背景技术
OLED 面板相比于传统的LCD面板有着更好的节能特性、画面表现力等优点，在柔性显示及可穿戴显示领域有着显著优势，而OLED中的发光层主要采用有机发光材料在高真空环境下进行蒸镀，当电荷通过时，有机发光层就会发光。
在蒸镀发光层的过程中，在基板的下方会采用高精度金属掩膜板（FMM）分别对RGB三种颜色的子像素进行镀膜，对非所需颜色的子像素区域以及非镀膜区域进行隔离。如图1所示，现有的显示装置中，子像素的排列通常为并排排列，第一子像素110、第二子像素120、第三子像素130构成一像素100，且每一子像素为矩形。
随着人们对于高清、高分辨率需求的日益提升，受玻璃基板的对位精度以及FMM 制作水平、shadow 效应等因素的限制，主流的RGB排列方式已难以满足生产需求，缩减像素定义层间隙及开口大小来提高像素密度也存在着混色等问题，因此，考虑一种新的像素排列方式已满足高PPI的生产需求是一种途径。
 技术问题
本发明的目的在于，解决现有的掩膜板蒸镀像素时，显示装置的像素难以提高的技术问题。
 技术解决方案
为实现上述目的，本发明提供一种显示面板，每一像素单元包括四个像素；每一像素包括第一子像素、第二子像素以及第三子像素；每一像素单元中的第一子像素相邻设置，且形成第一像素子区；在相邻的两个像素单元中，一个像素单元中的第二子像素与另一像素单元中的第二子像素相邻设置且形成第二像素子区，一个像素单元中的第三子像素与另一像素单元中的第三子像素相邻设置其而形成第三像素子区。
进一步地，所述像素为正方形；所述第一子像素为三角形；所述第二子像素为三角形；所述第三子像素为三角形；所述三角形包括直角三角形。
进一步地，当所述第一子像素、所述第二子像素、所述第三子像素均为直角三角形时，所述第一子像素的两条直角边与所述像素所在正方形的两条直角边对应设置；所述第二子像素的斜边对应且平行于所述像素的一边，且设于所述像素所在像素单元的边缘处；以及所述第三子像素的斜边对应且平行于所述像素的一边，且设于所述像素所在像素单元的边缘处。
进一步地，在所述像素单元中，四个像素中的第一子像素的直角相对设置；所述第一像素子区为第一矩形区域，所述第一矩形区域位于所述像素单元的中心处。
进一步地，在两个相邻的像素单元中，所述第二像素子区为第二矩形区域；在两个相邻的像素单元中，所述第三像素子区为第三矩形区域。
进一步地，所述第二子像素的面积与所述第三子像素的面积相等；所述第一子像素的面积等同于所述第二子像素的面积与所述第三子像素的面积之和。
进一步地，每一像素单元中，一第二子像素与一第三子像素相邻设置；两个第二子像素间隔设置；两个第三子像素间隔设置。
为实现上述目的，本发明还提供一种掩膜板，用以制备如前文所述的显示面板，包括板体，具有遮挡区以及开口区，所述开口区包括第一开口区、第二开口区以及第三开口区；其中，所述第一开口区的形状尺寸与所述显示面板的第一像素子区对应；所述第二开口区的形状尺寸与所述显示面板的第二像素子区对应；所述第三开口区的形状尺寸与所述显示面板的第三像素子区对应。
进一步地，所述第一开口区、所述第二开口区、所述第三开口区的形状均为矩形或菱形。
为实现上述目的，本发明还提供一种显示面板的制备方法，包括以下步骤：基板提供步骤，提供一基板；掩膜板放置步骤，放置一如权利要求8所述的掩膜板，使所述掩膜板的第一开口与所述基板的第一像素子区对应；所述掩膜板的第二开口与所述基板的第二像素子区对应；所述掩膜板的第三开口与所述基板的第三像素子区对应；蒸镀步骤，蒸镀所述基板，即在所述第一像素子区形成四个相邻的第一子像素，在所述第二像素子区形成两个相邻的第二子像素，在所述第三像素子区形成两个相邻的第三子像素，相邻的一个第一子像素、一个第二子像素、一个第三子像素形成一像素单元；以及掩膜板移除步骤，移除所述掩膜板。
 有益效果
本发明的技术效果在于，同一颜色的子像素彼此接近，且相互对称，可降低在蒸镀过程中造成的混色现象，提高显示装置的显示效果。一掩膜板开口对应于同一颜色的子像素组成的矩形区域，提高显示装置的像素密度。
 附图说明
下面结合附图，通过对本发明的具体实施方式详细描述，将使本发明的技术方案及其它有益效果显而易见。
图1为现有技术中显示面板中像素的排列方式；
图2为本发明实施例所述显示面板中像素单元的排列方式；
图3为本发明实施例所述掩膜板的示意图；
图4为本发明实施例所述显示面板的制备方法的流程图。
部分组件标识如下：
100、像素；
110、第一子像素；120、第二子像素；130、第三子像素；
1、像素单元；2、像素定义层；
11、像素；
111、第一子像素、112、第二子像素；113、第三子像素；
101、第一像素子区；102、第二像素子区；103、第三像素子区；
10、掩膜板；20、板体；30、遮挡区；40、开口区；401、第一开口区；402、第二开口区；403；第三开口区。
 本发明的实施方式
下面将结合本发明实施例中的附图，对本发明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发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，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，都属于本发明保护的范围。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接或可以相互通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
下文的公开提供了许多不同的实施方式或例子用来实现本发明的不同结构。为了简化本发明的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本发明。此外，本发明可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本发明提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
具体的，本发明实施例提供一种显示装置，所述显示装置包括一显示面板，请参阅图2，所述显示面板包括若干像素单元1以及像素定义层2。
像素单元1为一矩形区域，每一像素单元1之间的间隔皆为像素定义层2，像素定义层2用以定义发光层的大小，即像素单元的大小，在像素定义层2上设有若干通孔，像素单元1与所述通孔相对设置。
每一像素单元1包括四个像素11，每一像素11的形状为正方形，每一像素11之间设有像素定义层2。每一像素11包括三个子像素，分别为第一子像素111、第二子像素112以及第三子像素113。
每一像素单元1中的第一子像素111相对设置，第一子像素111的形状为三角形，在本实施例中为直角三角形，四个第一子像素111的直角边相对设置，四个直角相对设置，且彼此对称。第一子像素111的两条直角边分别与其所在像素11的两条相邻的边长相对设置，且设于其所在像素单元1的中心处，四个第一子像素111构成第一像素子区101，第一像素子区101为第一矩形区域，第一像素子区101设于其所在像素单元1的中心处，相同颜色的子像素距离相近，且对称分布，可以降低在蒸镀过程造成的混色现象，提高显示面板的显示效果。
第二子像素112的形状为三角形，在本实施例中，优选为直角三角形。在一像素11中，第二子像素112的斜边贴合至像素11的一边，其直角正对于第二子像素111，且设于像素11所在像素单元1的边缘处。在一像素单元1中，第二子像素112间隔设置。在两个相邻的像素单元1中，一个像素单元1中的第二子像素112与另一像素单元1中的第二子像素112相邻设置且形成第二像素子区102，具体地，两个第二子像素112的斜边相对设置，两个第二子像素112对称设置，构成第二像素子区102，第二像素子区为第二矩形区域，相同颜色的子像素距离相近，且对称分布，可以降低在蒸镀过程造成的混色现象，提高显示面板的显示效果。
第三子像素113的形状为三角形，在本实施例中，优选为直角三角形。在一像素11中，第三子像素113的斜边贴合至像素11的一边，其直角正对于第二子像素111，且设于像素11所在像素单元1的边缘处。在一像素单元1中，第三子像素113间隔设置，第二子像素112与第三子像素113相邻设置。一个像素单元1中的第三子像素113与另一像素单元1中的第三子像素113相邻设置且形成第三像素子区103，具体地，在两个相邻的像素单元1中，两个第三子像素113的斜边相对设置，两个第三子像素113对称设置，第三像素子区103为第三矩形区域，相同颜色的子像素距离相近，且对称分布，可以降低在蒸镀过程造成的混色现象，提高显示面板的显示效果。
第一子像素111为蓝色子像素，第二子像素112为红色子像素，第三子像素113为绿色子像素。
第二子像素112的大小与第二子像素113的大小相同，第一子像素111的面积大于第二子像素112的面积，且大于第三子像素113的面积，具体地，第一子像素111的大小等同于第二子像素112的大小以及第三子像素113的大小之和。因为目前有机发光材料中，蓝光材料的发光效率和寿命明显低于红光材料及绿光材料，较大的像素面积可以有效提升OLED显示装置的发光效率，延长其使用寿命。
在一像素11中，第一子像素111、第二子像素112以及第三子像素113之间设有像素定义层2，在像素定义层2的一通孔中设有一子像素，三个不同颜色的子像素构成一像素，四个所述像素构成一像素单元1。
本实施例所述显示装置的技术效果在于，同一颜色的子像素之间彼此接近，且相互对称设置，可降低在蒸镀过程中造成的混色现象，提高显示装置的显示效果。
如图3所示，本实施例还提供一种掩膜板10，掩膜板10用以制备如前文所述的显示面板，掩膜板10包括板体20，板体20具有遮挡区30以及开口区40。
开口区40包括第一开口区401、第二开口区402、第三开口区403，第一开口区401的形状尺寸与所述显示面板的第一像素子区101对应；第二开口区402的形状尺寸与所述显示面板的第二像素子区102对应；第三开口区403的形状尺寸与所述显示面板的第三像素子区103对应。
第一开口区401、第二开口区402、第三开口区403的形状皆为矩形。
本实施例所述掩膜板的技术效果在于，掩膜板的一个开口对应于同一颜色的子像素组成的像素子区，即一个开口对应两个子像素，可有效提高显示装置的像素密度。
如图4所示，本实施例还提供一种显示面板的制备方法，包括步骤S1~S4。
S1 基板提供步骤，提供一基板，所述基板包括像素定义层，所述像素定义层上设有若干通孔，四个第一通孔构成第一像素子区，两个第二通孔构成第二像素子区，两个第三通孔构成第三像素子区，所述第一像素子区的面积大于所述第二像素子区的面积，所述第一像素子区的面积大于所述第三像素子区的面积，所述第二像素子区的面积等同于所述第三像素子区的面积。所述第一像素子区用以蒸镀第一子像素，所述第二像素子区用以蒸镀第二子像素，所述第三像素子区用以蒸镀第三子像素，所述第一像素子区、所述第二像素子区与所述第三像素子区的形状皆为矩形区域。
S2 掩膜板放置步骤，在所述基板的上方放置如前文所述的掩膜板，其与所述基板紧密贴合。所述掩膜板包括第一开口区、第二开口区以及第三开口区，所述第一开口区与所述第一矩形区域相对设置，用以蒸镀第一子像素，所述第一子像素为蓝色子像素。所述第二开口区与所述第二矩形区域相对设置，用以蒸镀第二子像素，所述第二子像素为红色子像素。所述第三开口区与所述第三矩形区域相对设置，用以蒸镀第三子像素，所述第三子像素为绿色子像素。
掩膜板的一个开口区对应于同一颜色的子像素组成的像素子区，所述像素子区为矩形区域，即一个开口区对应两个子像素，可有效提高显示装置的像素密度。
S3 蒸镀步骤，对所述基板进行蒸镀处理，在所述第一像素子区形成四个相邻的第一子像素，在所述第二像素子区形成两个相邻的第二子像素，在所述第三像素子区形成两个相邻的第三子像素，相邻的一个第一子像素、一个第二子像素、一个第三子像素形成一像素单元。
S4 掩膜板移除步骤，移除所述掩膜板。
本实施例所述显示面板的制备方法的技术效果在于，掩膜板的一个开口对应于同一颜色的子像素组成的矩形区域，即一个开口对应两个子像素，可有效提高显示装置的像素密度。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
以上对本发明实施例所提供的一种显示面板及其制备方法、掩膜板进行了详细介绍，本文中应用了具体个例对本发明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发明的技术方案及其核心思想；本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例的技术方案的范围。

Claims (10)

  1. 一种显示面板，其包括若干像素单元；
    每一像素单元包括四个像素；
    每一像素包括第一子像素、第二子像素以及第三子像素；
    每一像素单元中的第一子像素相邻设置，且形成第一像素子区；
    在相邻的两个像素单元中，一个像素单元中的第二子像素与另一像素单元中的第二子像素相邻设置且形成第二像素子区，一个像素单元中的第三子像素与另一像素单元中的第三子像素相邻设置其而形成第三像素子区。
  2. 如权利要求1所述的显示面板，其中，
    所述像素为正方形；
    所述第一子像素为三角形；
    所述第二子像素为三角形；
    所述第三子像素为三角形；
    所述三角形包括直角三角形。
  3. 如权利要求2所述的显示面板，其中，
    当所述第一子像素、所述第二子像素、所述第三子像素均为直角三角形时，
    所述第一子像素的两条直角边与所述像素所在正方形的两条直角边对应设置；
    所述第二子像素的斜边对应且平行于所述像素的一边，且设于所述像素所在像素单元的边缘处；以及
    所述第三子像素的斜边对应且平行于所述像素的一边，且设于所述像素所在像素单元的边缘处。
  4. 如权利要求3所述的显示面板，其中，
    在所述像素单元中，四个像素中的第一子像素的直角相对设置；
    所述第一像素子区为第一矩形区域，所述第一矩形区域位于所述像素单元的中心处。
  5. 如权利要求1所述的显示面板，其中，
    在两个相邻的像素单元中，所述第二像素子区为第二矩形区域；
    在两个相邻的像素单元中，所述第三像素子区为第三矩形区域。
  6. 如权利要求1所述的显示面板，其中，
    所述第二子像素的面积与所述第三子像素的面积相等；
    所述第一子像素的面积等同于所述第二子像素的面积与所述第三子像素的面积之和。
  7. 如权利要求1所述的显示面板，其中，
    每一像素单元中，
    一第二子像素与一第三子像素相邻设置；
    两个第二子像素间隔设置；
    两个第三子像素间隔设置。
  8. 一种掩膜板，用以制备如权利要求1所述的显示面板，其包括
    板体，具有遮挡区以及开口区，所述开口区包括第一开口区、第二开口区以及第三开口区；
    其中，所述第一开口区的形状尺寸与所述显示面板的第一像素子区对应；所述第二开口区的形状尺寸与所述显示面板的第二像素子区对应；所述第三开口区的形状尺寸与所述显示面板的第三像素子区对应。
  9. 如权利要求8所述的掩膜板，其中，
    所述第一开口区、所述第二开口区、所述第三开口区的形状均为矩形或菱形。
  10. 一种显示面板的制备方法，其包括以下步骤：
    基板提供步骤，提供一基板；
    掩膜板放置步骤，放置一如权利要求8所述的掩膜板，使所述掩膜板的第一开口与所述基板的第一像素子区对应；所述掩膜板的第二开口与所述基板的第二像素子区对应；所述掩膜板的第三开口与所述基板的第三像素子区对应；
    蒸镀步骤，蒸镀所述基板，即在所述第一像素子区形成四个相邻的第一子像素，在所述第二像素子区形成两个相邻的第二子像素，在所述第三像素子区形成两个相邻的第三子像素，相邻的一个第一子像素、一个第二子像素、一个第三子像素形成一像素单元；以及
    掩膜板移除步骤，移除所述掩膜板。
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