Display panel and display device

Patent metadata

Field	Value
Publication number	US-11995258-B2
Application number	US-202318111906-A
Country	US
Kind code	B2
Filing date	Feb 21, 2023
Priority date	Dec 27, 2021
Publication date	May 28, 2024
Grant date	May 28, 2024

Abstract

The embodiments of the present application provide a display panel and a display device. The display panel has a display area and a non-display area, the display panel includes: a substrate, a touch component arranged on the substrate, the touch component comprising touch electrodes located in the display area and touch leads connected to the touch electrodes and located in the non-display area; and a circuit board connected to the substrate in the non-display area, the touch leads being connected between the touch electrodes and the circuit board; and wherein the non-display area has a cutting track arranged surrounding at least part of the display area, at least part of the touch leads includes first redundant winding segments and connection segments, at least part of the first redundant winding segments extend along a direction away from the circuit board and fill between the cutting track and the display area.

First claim

What is claimed is:

1. A display panel, wherein the display panel has a display area and a non-display area, and the display panel comprises:
a substrate,
a touch component arranged on the substrate, the touch component comprising touch electrodes located in the display area and touch leads connected to the touch electrodes and located in the non-display area; and
a circuit board connected to the substrate in the non-display area, the touch leads being connected between the touch electrodes and the circuit board; and
wherein the non-display area has a cutting track arranged surrounding at least part of the display area, at least part of the touch leads comprise first redundant winding segments and connection segments, at least part of the first redundant winding segments extend along a direction away from the circuit board and fill between the cutting track and the display area, and the connection segments are connected between the first redundant winding segments and the circuit board,
wherein the touch component further includes terminals connected to the touch electrodes, the touch leads are connected between the terminals and the circuit board, M groups of terminals are on a same side of the display area, and the touch leads form at least M−1 turns of wiring on a side of the M groups of terminals away from the display area,
wherein the M groups of terminals include first distal ends away from the circuit board, a plurality of touch leads include first distal end traces connected to the first distal ends, and at least part of the first distal end traces include the first redundant winding segments,
wherein the circuit board is located on a side of the display area in the second direction, and the first distal ends are located on a side of the display area away from the circuit board in the second direction, and/or the first distal ends are located on at least one side of the display area in the first direction,
wherein the terminals are not arranged on a side of the touch electrodes away from the circuit board in the second direction, and at least part of the first redundant winding segments are located on a side of the touch electrodes away from the circuit board in the second direction.

2. The display panel according to claim 1 , further comprising: a grounding member arranged on the substrate, the grounding member comprising a ground wire located in the non-display area and surrounding at least part of the display area, the cutting track being located on a side of the ground wire away from the display area, and at least part of the first redundant winding segments extending in a direction away from the circuit board and filling between the ground wire and the display area.

3. The display panel according to claim 1 , wherein the display area comprises a first edge extending in a first direction, a second edge extending in a second direction, and a shaped edge connecting the first edge and the second edge, and at least part of the first redundant winding segments are located between the shaped edge and the cutting track.

4. The display panel according to claim 3 , wherein a plurality of touch electrodes are arranged in rows and columns along the first direction and the second direction, and the circuit board is located on a side of the plurality of touch electrodes in the second direction; and
at least part of the first redundant winding segments are located between the shaped edge and the cutting track on a side of the display area away from the circuit board in the second direction.

5. The display panel according to claim 1 , wherein at least two groups of terminals are distributed at intervals on a same side of the display area, the touch leads further comprise second redundant winding segments, and at least part of the second redundant winding segments are located between the two groups of terminals distributed at intervals.

6. The display panel according to claim 5 , wherein among the two groups of terminals distributed at intervals, the terminals close to the circuit board are connected to the touch leads that extend towards the terminals away from the circuit board and form the second redundant winding segments.

7. The display panel according to claim 1 , wherein at least part of the first redundant winding segments and at least one of the touch leads connected to terminals other than the M groups of terminals are located in a same turn of wiring.

8. The display panel according to claim 1 , wherein at least part of the first distal end traces are located on a side of touch leads other than the plurality of touch leads away from the display area.

9. The display panel according to claim 1 , wherein a plurality of touch leads form multiple layers of wirings in a winding area, and a distance between two adjacent layers of wirings is 3 μm to 30 μm.

10. The display panel according to claim 1 , wherein line widths of a plurality of touch leads are equal.

11. The display panel according to claim 1 , further comprising a suspension trace being suspended and not connected to other leads, the touch leads being arranged surrounding the suspension trace.

12. The display panel according to claim 1 , further comprising a filling trace, an end of the filling trace being connected to the touch electrodes, and the other end being a free end, and the filling trace being arranged adjacent to the display area.

13. A display device, comprising the display panel according to claim 1 .

Assignees

• Wuhan Tianma Micro Electronics Co Ltd
• Wuhan Tianma Microelectronics Co Ltd Shanghai Branch

Inventors

• Wei Qibing
• Wang Qingxia
• Zhang Peng
• Yang Kang

Classifications

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/0446

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title

• G06F3/047

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

• G06F2203/04103

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

• G06F3/04164 Primary

  Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads · CPC title