Display panel, preparation method thereof, and display apparatus

Patent metadata

Field	Value
Publication number	US-11489139-B2
Application number	US-202117210424-A
Country	US
Kind code	B2
Filing date	Mar 23, 2021
Priority date	May 27, 2020
Publication date	Nov 1, 2022
Grant date	Nov 1, 2022

Abstract

Provided are a display panel, a preparation method thereof and a display apparatus. The display panel includes a display substrate and a cover plate oppositely disposed. The display substrate includes an array substrate, pixel define layers on the array substrate, pixel support layers on a side of the pixel define layers away from the array substrate, and second electrodes each located on a side of each of the pixel support layers away from each pixel define layers. The cover plate includes a first substrate, a touch sensor layer and protective layer disposed on the first substrate, wherein multiple openings are disposed on the touch sensor layer and covered by the protective layer. An orthographic projection of each of the openings on the array substrate at least partially overlaps with that of a surface on a side of each of the pixel support layers away from the array substrate.

First claim

What we claim is:

1. A display panel, comprising a display substrate and a cover plate that are oppositely disposed, wherein:
the display substrate comprises an array substrate, pixel define layers on the array substrate, pixel support layers on a side of the pixel define layers away from the array substrate, and second electrodes each located on a side of each of the pixel support layers away from each of the pixel define layers;
the cover plate comprises a first substrate, a touch sensor layer and a protective layer, wherein the touch sensor layer and the protective layer are disposed on the first substrate, wherein a plurality of openings are disposed on the touch sensor layer; the plurality of openings are covered by the protective layer; an orthographic projection of each of the plurality of openings on the array substrate at least partially overlaps with that of a surface on a side of each of the pixel support layers away from the array substrate;
wherein the protective layer comprises a plurality of protective columns disposed at intervals, and the plurality of protective columns cover the openings; and
wherein a part of the second electrodes is sandwiched by the protective column and the pixel support layer; or the second electrodes contact with the plurality of protective columns and the pixel support layers.

2. The display panel of claim 1 , wherein the orthographic projection of each of the plurality of openings on the array substrate coincides with that of the surface on the side of each of the pixel support layers away from the array substrate.

3. The display panel of claim 1 , wherein a section of each of the plurality of protective columns is hexagonal.

4. The display panel of claim 1 , wherein a length of each of the plurality of protective columns in a direction perpendicular to the cover plate is greater than that of the touch sensor layer in the direction perpendicular to the cover plate.

5. The display panel of claim 4 , wherein a second electrode between adjacent pixel define layers, protective columns and the touch sensor layer form an enclosed space which is in a vacuum state or filled with nitrogen or an inert gas.

6. The display panel of claim 1 , wherein at least part of side surfaces of the plurality of protective columns contact with the touch sensor layer.

7. A display apparatus, comprising a display panel which comprises a display substrate and a cover plate that are oppositely disposed, wherein:
the display substrate comprises an array substrate, pixel define layers on the array substrate, pixel support layers on a side of the pixel define layers away from the array substrate, and second electrodes each located on a side of each of the pixel support layers away from each of the pixel define layers;
the cover plate comprises a first substrate, a touch sensor layer and a protective layer, wherein the touch sensor layer and the protective layer are disposed on the first substrate, wherein a plurality of openings are disposed on the touch sensor layer; the plurality of openings are covered by the protective layer; an orthographic projection of each of the plurality of openings on the array substrate at least partially overlaps with that of a surface on a side of each of the pixel support layers away from the array substrate;
the protective layer comprises a plurality of protective columns disposed at intervals, and the plurality of protective columns cover the openings; and
a part of the second electrodes is sandwiched by the protective column and the pixel support layer; or the second electrodes contact with the plurality of protective columns and the pixel support layers.

8. The display apparatus of claim 7 , wherein the orthographic projection of each of the plurality of openings on the array substrate coincides with that of the surface on the side of each of the pixel support layers away from the array substrate.

9. The display apparatus of claim 7 , wherein a section of each of the plurality of protective columns is hexagonal.

10. The display apparatus of claim 7 , wherein a length of each of the plurality of protective columns in a direction perpendicular to the cover plate is greater than that of the touch sensor layer in the direction perpendicular to the cover plate.

11. The display apparatus of claim 10 , wherein a second electrode between adjacent pixel define layers, protective columns and the touch sensor layer form an enclosed space which is in a vacuum state or filled with nitrogen or an inert gas.

12. The display panel of claim 7 , wherein at least part of side surfaces of the plurality of protective columns contact with the touch sensor layer.

13. A preparation method of a display panel, comprising:
forming a display substrate and a cover plate respectively, wherein the display substrate comprises an array substrate, pixel define layers on the array substrate, pixel support layers on a side of the pixel define layers away from the array substrate, and second electrodes each located on a side of each of the pixel support layers away from each of the pixel define layers; the cover plate comprises a first substrate, a touch sensor layer and a protective layer, wherein the touch sensor layer and the protective layer are disposed on the first substrate, wherein a plurality of openings are disposed on the touch sensor layer, and the plurality of openings are covered by the protective layer; and
bonding and encapsulating the display substrate and the cover plate, wherein an orthographic projection of each of the plurality of openings on the array substrate at least partially overlaps with that of a surface on a side of each of the pixel support layers away from the array substrate,
wherein forming the cover plate comprises:
forming the touch sensor layer on the first substrate, and forming the plurality of openings on the touch sensor layer;
forming the protective layer on the touch sensor layer, wherein the plurality of openings are covered by the protective layer; and
etching a protective layer between the plurality of openings to form a plurality of protective columns disposed at intervals, wherein the openings are covered by the plurality of protective columns,
wherein bonding and encapsulating the display substrate and the cover plate comprises:
bonding and encapsulating the display substrate and the cover plate in vacuum, nitrogen or an inert gas, to make an enclosed space formed by a second electrode between adjacent pixel define layers, protective columns and the touch sensor layer be in a vacuum state or filled with the nitrogen or the inert gas; and
connecting each of the plurality of protective columns on the cover plate to each of the second electrodes on the display substrate, wherein each of the plurality of protective columns corresponds to each of the pixel support layers in position, and the enclosed space is formed by the second electrode between adjacent pixel define layers, protective columns and the touch sensor layer.

Assignees

• Ordos Yuansheng Optoelectronics Co Ltd
• Boe Technology Group Co Ltd
• Beijing Boe Technology Dev Co Ltd

Inventors

• Yan Xiaofeng
• Liu Liangliang
• Peng liman
• Ma Lingling
• Mi Hongyu
• Gao Le

Classifications

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• H01L51/5246 Primary

  Electricity · mapped topic

• H01L51/56

  Electricity · mapped topic

• H01L27/3246

  Electricity · mapped topic