Display panel and display device

Patent metadata

Field	Value
Publication number	US-2026013389-A1
Application number	US-202519325919-A
Country	US
Kind code	A1
Filing date	Sep 11, 2025
Priority date	Apr 6, 2021
Publication date	Jan 8, 2026
Grant date	—

Abstract

Provided is a display panel, including a display substrate including a display region and a bonding region; and a touch layer on the display substrate. The bonding region includes a bending region and a first non-bending region adjacent to each other. The display substrate further includes a first conductive layer at least located in the bending region. The touch layer is in the first non-bending region; the touch layer has a first boundary in an adjacent area between the bending region and the first non-bending region, and includes sequentially disposed a first electrode layer, an insulating layer and a second electrode layer. Edges of the second electrode layer and the first conductive layer overlap, orthographic projections of first boundaries of the second electrode layer, the first electrode layer and the insulating layer on the display substrate do not overlap, and are sequentially located away from the bending region.

First claim

What is claimed is:

1 . A display panel, comprising:
a display substrate; and a touch layer disposed on at least one side of the display substrate, wherein the display substrate comprises a display region and a bonding region located on at least one side of the display region, and the bonding region comprises a bending region and a first non-bending region, which are adjacent to each other; the display substrate further comprises a first conductive layer at least located in the bending region; the touch layer is located in the first non-bending region; and a first boundary of the touch layer is located in an adjacent area between the bending region and the first non-bending region; the touch layer comprises a first electrode layer, an insulating layer and a second electrode layer, which are sequentially disposed away from the first conductive layer; and
the second electrode layer contacts and overlaps an edge portion of the first conductive layer, and wherein
orthographic projections of first boundaries of the second electrode layer, the first electrode layer and the insulating layer on the display substrate do not overlap one another, and are sequentially located away from the bending region.

2 . The display panel of claim 1 , wherein the bonding region further comprises a second non-bending region located on a side of the bending region away from the first non-bending region, and the second non-bending region is adjacent to the bending region;
the touch layer is also located in the second non-bending region; and a second boundary of the touch layer is located in an adjacent area between the bending region and the second non-bending region; and orthographic projections of second boundaries of the second electrode layer, the first electrode layer and the insulating layer on the display substrate do not overlap one another, and are sequentially located away from the bending region.

3 . The display panel of claim 2 , wherein the first conductive layer further extends into the first non-bending region; and
the orthographic projections of the first boundaries of the second electrode layer, the first electrode layer and the insulating layer on the display substrate fall on the first conductive layer.

4 . The display panel of claim 3 , wherein the first conductive layer further extends into the second non-bending region; and
the orthographic projections of the second boundaries of the second electrode layer, the first electrode layer and the insulating layer on the display substrate fall on the first conductive layer.

5 . The display panel of claim 4 , wherein the orthographic projection of the first boundary of the second electrode layer on the display substrate overlaps a bordering boundary between the bending region and the first non-bending region; and
the orthographic projection of the second boundary of the second electrode layer on the display substrate overlaps a bordering boundary between the bending region and the second non-bending region.

6 . The display panel of claim 5 , wherein the orthographic projection of the first boundary of the first electrode layer on the display substrate is separated from the orthographic projection of the first boundary of the second electrode layer on the display substrate by a first distance;
the orthographic projection of the first boundary of the first electrode layer on the display substrate is separated from the orthographic projection of the first boundary of the insulating layer on the display substrate by a second distance; the orthographic projection of the second boundary of the first electrode layer on the display substrate is separated from the orthographic projection of the second boundary of the second electrode layer on the display substrate by the first distance; the orthographic projection of the second boundary of the first electrode layer on the display substrate is separated from the orthographic projection of the second boundary of the insulating layer on the display substrate by the second distance; and the first distance is smaller than or equal to the second distance.

7 . The display panel of claim 6 , wherein the first distance is in a range from 4 μm to 8 μm; and the second distance is in a range from 5 μm to 10 μm.

8 . The display panel of claim 7 , wherein a thickness of the insulating layer is in a range from 2800 Å to 3200 Å; and
a thickness of the first electrode layer is in a range from 1800 Å to 2200 Å.

9 . The display panel of claim 8 , wherein a slope angle of the first boundary of the insulating layer is in a range from 80° to 90°; and a slope angle of the second boundary of the insulating layer is in a range from 80° to 90°; and
a slope angle of the first boundary of the first electrode layer is in a range from 30° to 60°; and a slope angle of the second boundary of the first electrode layer is in a range from 30° to 60°.

10 . The display panel of claim 4 , wherein the display substrate further comprises a buffer layer located between the first electrode layer and the first conductive layer in the first non-bending region; and
a first boundary of the buffer layer is located in the adjacent area between the bending region and the first non-bending region, and an orthographic projection of the first boundary of the buffer layer on the first conductive layer overlaps that of the first boundary of the first electrode layer on the first conductive layer.

11 . The display panel of claim 4 , wherein the display substrate further comprises a buffer layer located between the first electrode layer and the first conductive layer in the first non-bending region; and
a first boundary of the buffer layer is located in the adjacent area between the bending region and the first non-bending region, and an orthographic projection of the first boundary of the buffer layer on the first conductive layer is located between the orthographic projection of the first boundary of the second electrode layer on the first conductive layer and the orthographic projection of the first boundary of the first electrode layer on the first conductive layer.

12 . The display panel of claim 10 , wherein the buffer layer is also located in the second non-bending region; and
a second boundary of the buffer layer is located in the adjacent area between the bending region and the second non-bending region, and an orthographic projection of the second boundary of the buffer layer on the first conductive layer overlaps that of the second boundary of the first electrode layer on the first conductive layer.

13 . The display panel of claim 10 , wherein the buffer layer is also located in the second non-bending region; and
a second boundary of the buffer layer is located in the adjacent area between the bending region and the second non-bending region, and an orthographic projection of the second boundary of the buffer layer on the first conductive layer is located between the orthographic projection of the second boundary of the second electrode layer on the first conductive layer and the orthographic projection of the second boundary of the first electrode layer on the first conductive layer.

14 . The display panel of claim 10 , wherein a thickness of the buffer layer is in a range from 800 Å to 1000 Å.

15 . The display panel of claim 2 , wherein the insulating layer further comprises a third boundary;
the first conductive layer comprises a first boundary located in the first non-bending region; and an orthographic projection of the third boundary of the insulating layer on the display substrate is located on a side of the

Assignees

• Chengdu Boe Optoelect Tech Co
• Boe Technology Group Co Ltd

Inventors

• He Fan
• Tong Kemeng
• Dong Xiangdan

Classifications

• H10K2102/351

  Thickness · CPC title

• H10K59/40 Primary

  OLEDs integrated with touch screens · CPC title

• H10K2102/311

  Flexible OLED · CPC title

• Y02E10/549

  Organic PV cells · CPC title

• H10K59/131

  Interconnections, e.g. wiring lines or terminals · CPC title