Display panels, and preparation methods thereof and display apparatuses

Patent metadata

Field	Value
Publication number	US-2022149122-A1
Application number	US-202117359452-A
Country	US
Kind code	A1
Filing date	Jun 25, 2021
Priority date	Nov 9, 2020
Publication date	May 12, 2022
Grant date	—

Abstract

The present disclosure provides a display panel and preparing method thereof, and a display apparatus. In one or more embodiments, the display panel includes a substrate that includes an off-screen camera region including a plurality of opening regions, a flexible layer located at a side of the substrate, a backplate layer located at a side of the flexible layer away from the substrate and including a plurality of light-transmitting film layers, and a light-emitting device layer located at a side of the backplate layer away from the substrate and including a plurality of cathodes. An orthographic projection of the flexibly layer on the substrate is not overlapped with the opening regions. An orthographic project of at least one light-transmitting film layer on the substrate covers the opening regions. Orthographic projections of the cathodes on the substrate are not overlapped with the opening regions.

First claim

What is claimed is:

1 . A display panel, comprising:
a substrate, wherein the substrate comprises an off-screen camera region comprising a plurality of opening regions; a flexible layer, located at a side of the substrate, wherein an orthographic projection of the flexibly layer on the substrate is not overlapped with the opening regions; a backplate layer, located at a side of the flexible layer away from the substrate and comprising a plurality of light-transmitting film layers, wherein an orthographic project of at least one light-transmitting film layer on the substrate covers the opening regions; and a light-emitting device layer, located at a side of the backplate layer away from the substrate and comprising a plurality of cathodes, wherein orthographic projections of the cathodes on the substrate are not overlapped with the opening regions.

2 . The display panel according to claim 1 , wherein the backplate layer comprises: a first light-transmitting film layer, an active layer, a second light-transmitting film layer, a plurality of gate electrodes, a third light-transmitting film layer, a plurality of source and drain electrodes, a fourth light-transmitting film layer, a fifth light-transmitting film layer, a plurality of anodes, a sixth light-transmitting film layer and a seventh light-transmitting film layer, which are stacked in sequence on the flexible layer;
wherein the first light-transmitting film layer, the second light-transmitting film layer, the third light-transmitting film layer, and the fourth light-transmitting film layer are inorganic film layers; and the fifth light-transmitting film layer, the sixth light-transmitting film layer and the seventh light-transmitting film layer are organic film layers.

3 . The display panel according to claim 2 , wherein in the opening regions, the substrate is covered by one or more of the fifth light-transmitting film layer, the sixth light-transmitting film layer and the seventh light-transmitting film layer.

4 . The display panel according to claim 2 , wherein in the opening regions, the substrate is covered by one or more of the first light-transmitting film layer, the second light-transmitting film layer, the third light-transmitting film layer and the fourth light-transmitting film layer.

5 . The display panel according to claim 2 , wherein in the opening regions, the substrate is covered by one or more of the first light-transmitting film layer, the second light-transmitting film layer, the third light-transmitting film layer, the fourth light-transmitting film layer, the fifth light-transmitting film layer, the sixth light-transmitting film layer and the seventh light-transmitting film layer.

6 . The display panel according to claim 1 , wherein the light-emitting device layer comprises: an organic light-emitting layer, a plurality of cathodes, a light coupling layer, and a light extraction layer stacked in sequence;
wherein orthographic projections of the organic light-emitting layer, the light coupling layer, and the light extraction layer on the substrate cover the opening regions respectively; and orthographic projections of the cathodes on the substrate are partially overlapped with the orthographic projection of the flexible layer on the substrate.

7 . The display panel according to claim 1 , further comprising an encapsulation layer, located at a side of the light-emitting device layer away from the substrate, wherein an orthographic projection of the encapsulation layer on the substrate covers the off-screen camera region.

8 . A display apparatus, comprising a display panel;
the display panel comprising a substrate, wherein the substrate comprises an off-screen camera region comprising an opening regions; a flexible layer, located at a side of the substrate, wherein an orthographic projection of the flexibly layer on the substrate is not overlapped with the opening regions; a backplate layer, located at a side of the flexible layer away from the substrate and comprising a plurality of light-transmitting film layers, wherein an orthographic project of at least one light-transmitting film layer on the substrate covers the opening regions; and a light-emitting device layer, located at a side of the backplate layer away from the substrate and comprising a plurality of cathodes, wherein orthographic projections of the cathodes on the substrate are not overlapped with the opening regions.

9 . The display apparatus according to claim 8 , wherein the backplate layer comprises: a first light-transmitting film layer, an active layer, a second light-transmitting film layer, a plurality of gate electrodes, a third light-transmitting film layer, a plurality of source and drain electrodes, a fourth light-transmitting film layer, a fifth light-transmitting film layer, a plurality of anodes, a sixth light-transmitting film layer and a seventh light-transmitting film layer, which are stacked in sequence on the flexible layer;
wherein the first light-transmitting film layer, the second light-transmitting film layer, the third light-transmitting film layer, and the fourth light-transmitting film layer are inorganic film layers; and the fifth light-transmitting film layer, the sixth light-transmitting film layer and the seventh light-transmitting film layer are organic film layers.

10 . The display apparatus according to claim 9 , wherein in the opening regions, the substrate is covered by one or more of the fifth light-transmitting film layer, the sixth light-transmitting film layer and the seventh light-transmitting film layer.

11 . The display apparatus according to claim 9 , wherein in the opening regions, the substrate is covered by one or more of the first light-transmitting film layer, the second light-transmitting film layer, the third light-transmitting film layer and the fourth light-transmitting film layer.

12 . The display apparatus according to claim 9 , wherein in the opening regions, the substrate is covered by one or more of the first light-transmitting film layer, the second light-transmitting film layer, the third light-transmitting film layer, the fourth light-transmitting film layer, the fifth light-transmitting film layer, the sixth light-transmitting film layer and the seventh light-transmitting film layer.

13 . The display apparatus according to claim 8 , wherein the light-emitting device layer comprises: an organic light-emitting layer, a plurality of cathode, a light coupling layer, and a light extraction layer stacked in sequence;
wherein orthographic projections of the organic light-emitting layer, the light coupling layer, and the light extraction layer on the substrate cover the opening regions respectively; and orthographic projections of the cathodes on the substrate are partially overlapped with the orthographic projection of the flexible layer on the substrate.

14 . The display apparatus according to claim 8 , further comprising an encapsulation layer, located at a side of the light-emitting device layer away from the substrate, wherein an orthographic projection of the encapsulation layer on the substrate covers the off-screen camera region.

15 . A method of preparing a display panel, comprising:
providing a substrate, wherein the substrate comprises an off-screen camera region comprising a plurality of opening regions; preparing a flexible layer and a backplate layer in sequence on the substrate, wherein the backplate layer comprises a plurality of light-transmitting film layers, an orthographic projection of the flexible layer on the substrate is not overlapped with the opening regions, and an ort

Assignees

• Chongqing Boe Display Tech Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Lu Yuqun
• Li Jie
• Yu Yang
• Jiang Chuntong
• Chen Teng
• Wang Lingling
• Wang Wenqiang

Classifications

• H10K59/8731

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10D86/0212

  comprising manufacture, treatment or coating of substrates · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• H10D86/411 Primary

  characterised by materials, geometry or structure of the substrates · CPC title

• H01L27/3234 Primary

  Electricity · mapped topic