Display panel and display device

Patent metadata

Field	Value
Publication number	US-2026023453-A1
Application number	US-202519339522-A
Country	US
Kind code	A1
Filing date	Sep 25, 2025
Priority date	Apr 28, 2022
Publication date	Jan 22, 2026
Grant date	—

Abstract

A display panel includes a base substrate, a driving layer, a pixel layer and a touch layer stacked sequentially. In a peripheral area of the display panel, the driving layer is provided with a touch pin and a touch relay wire connected with the touch pin; the touch layer includes a touch organic layer and a touch metal layer buried in the touch organic layer, and the touch metal layer is formed with a touch channel and a touch wiring connected with the touch channel. The touch organic layer exposes the touch pin, and an end of the touch relay wire away from the touch pin extends between the touch organic layer and the base substrate. The touch wiring does not protrude out of the touch organic layer, and the touch wiring is electrically connected to the end of the touch relay wire away from the touch pin.

First claim

What is claimed is:

1 . A display panel, comprising a base substrate, a driving layer, a pixel layer and a touch layer stacked sequentially; wherein, in a peripheral area of the display panel, the driving layer is provided with a touch pin and a touch relay wire connected with the touch pin; the touch layer comprises a touch organic layer and a touch metal layer buried in the touch organic layer, and the touch metal layer is formed with a touch channel and a touch wiring connected with the touch channel;
wherein, the touch organic layer exposes the touch pin, and an end of the touch relay wire away from the touch pin extends between the touch organic layer and the base substrate; the touch wiring does not protrude out of the touch organic layer, and the touch wiring is electrically connected to the end of the touch relay wire away from the touch pin through a via hole, wherein the touch organic layer comprises a first touch organic layer, a second touch organic layer and a third touch organic layer sequentially stacked on a side of the pixel layer away from the base substrate; the touch metal layer comprises a first touch metal layer sandwiched between the first touch organic layer and the second touch organic layer, and a second touch metal layer sandwiched between the second touch organic layer and the third touch organic layer; the touch metal layer further comprises pin protection parts, and the pin protection parts comprise a first pin protection part located on the first touch metal layer and a second pin protection part located on the second touch metal layer; an orthographic projection of the touch pin on the base substrate is located within an orthographic projection of the first pin protection part on the base substrate; and the orthographic projection of the first pin protection part on the base substrate is located within an orthographic projection of the second pin protection part on the base substrate.

2 . The display panel according to claim 1 , wherein the touch channel is formed on the second touch metal layer and the first touch metal layer; the touch wiring comprises a first touch wiring and a second touch wiring connected with a same touch channel, the first touch wiring is located in the first touch metal layer, the second touch wiring is located in the second touch metal layer; an end of the first touch wiring away from the touch channel is electrically connected to the touch relay wire through a via hole, and an end of the second touch wiring away from the touch channel is electrically connected to the first touch wiring through a via hole.

3 . The display panel according to claim 1 , wherein the driving layer is provided with a common voltage bus between the touch pin and a display area of the display panel, and the common voltage bus is configured to load a common voltage to the pixel layer;
the via hole between the touch relay wire and the touch wiring is located between the common voltage bus and the touch pin.

4 . The display panel according to claim 1 , wherein the driving layer comprises a source-drain metal layer and a passivation layer for protecting the source-drain metal layer;
the touch relay wire is located on the source-drain metal layer, and a part of the touch relay wire between the touch pin and the touch organic layer is covered by the passivation layer.

5 . The display panel according to claim 4 , wherein the source-drain metal layer comprises a first source-drain metal layer and a second source-drain metal layer sequentially stacked on a side of the base substrate, and the passivation layer is located between the first source-drain metal layer and the second source-drain metal layer;
the touch relay wire is located on the first source-drain metal layer; the second source-drain metal layer comprises transfer metal parts corresponding to respective touch relay wires one by one, and the end of the touch relay wire away from the touch pin is connected with a corresponding one of the transfer metal parts; and an end of the touch wiring away from the touch channel is connected with the touch relay wire through the transfer metal part.

6 . The display panel according to claim 5 , wherein the transfer metal part is overlapped on the end of the touch relay wire away from the touch pin; and a part of the touch relay wire not overlapped with the transfer metal part is covered by the passivation layer.

7 . The display panel according to claim 1 , wherein the pin protection parts correspond to respective touch pins one by one, the pin protection part is overlapped and electrically connected with a corresponding one of the touch pins; and a gap exists between the pin protection part and an edge of the touch organic layer.

8 . The display panel according to claim 1 , wherein the second touch organic layer is not provided between the first pin protection part and the second pin protection part; and the first touch organic layer is not provided between the first pin protection part and the touch pin.

9 . The display panel according to claim 4 , wherein the source-drain metal layer comprises a first source-drain metal layer and a second source-drain metal layer sequentially stacked on a side of the base substrate, the passivation layer is located between the first source-drain metal layer and the second source-drain metal layer; and the touch pin and the touch relay wire are located in the first source-drain metal layer;
the second source-drain metal layer comprises laminated metal parts corresponding to respective touch pins one by one, and the laminated metal part is overlapped and electrically connected with a corresponding one of the touch pins.

10 . The display panel according to claim 9 , wherein the orthographic projection of the touch pin on the base substrate is located within an orthographic projection of the laminated metal part on the base substrate.

11 . The display panel according to claim 9 , wherein the driving layer further comprises a planarization layer located on a side of the second source-drain metal layer away from the base substrate; and
the planarization layer covers a gap between the laminated metal part and a boundary of the touch organic layer.

12 . The display panel according to claim 11 , wherein a part of the touch organic layer covering the touch relay wire is directly formed on a surface of the planarization layer away from the base substrate.

13 . The display panel according to claim 11 , wherein pin protection parts correspond to respective touch pins one by one, and the pin protection part is overlapped and electrically connected with a corresponding one of the touch pins through the laminated metal part;
a gap exists between the pin protection part and an edge of the touch organic layer, and a part of the pin protection part close to the touch organic layer is overlapped on the planarization layer.

14 . The display panel according to claim 9 , wherein the pin protection parts correspond to respective touch pins one by one, and the pin protection part is overlapped and electrically connected with a corresponding one of the touch pins through the laminated metal part;
wherein, an orthographic projection of the laminated metal part on the base substrate is located within an orthographic projection of the pin protection part on the base substrate.

15 . The display panel according to claim 1 , further comprising a thin-film encapsulation layer located between the pixel layer and the touch layer, and the thin-film encapsulation layer comprises an inorganic encapsulation layer and an organic encapsulation layer stacked alternat

Assignees

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

Inventors

• Tong Kemeng
• Hu Ming
• Fan Cong
• He Fan
• Dong Xiangdan

Classifications

• G06F3/044

  by capacitive means · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title

• G06F3/041

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title

• G06F3/047

  using sets of wires, e.g. crossed wires · CPC title

• G06F2203/04111

  Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate · CPC title