Touch panel, manufacturing method thereof, and touch display device

Patent metadata

Field	Value
Publication number	US-11023073-B2
Application number	US-201715752275-A
Country	US
Kind code	B2
Filing date	Aug 4, 2017
Priority date	Jan 3, 2017
Publication date	Jun 1, 2021
Grant date	Jun 1, 2021

Abstract

A touch panel, a manufacturing method thereof and a touch display device are provided in the field of display technology. The touch panel includes: a base substrate, and first touch electrodes and second touch electrodes that are disposed on the base substrate. The first touch electrodes are disposed in a center region of the base substrate, and the second touch electrodes are disposed in an edge region of the base substrate.

First claim

What is claimed is:

1. A touch panel, comprising:
a base substrate; and
first touch electrodes and second touch electrodes that are disposed on the base substrate,
wherein the first touch electrodes are disposed in a center region of the base substrate, and the second touch electrodes are disposed in an edge region of the base substrate,
wherein the touch panel further comprises first electrode wires and second electrode wires, the first electrode wires comprising drive wires; and the first touch electrodes comprise drive electrodes and sensing electrodes, and
wherein the drive electrodes and the drive wires are arranged on a same layer, the second touch electrodes and the second electrode wires are arranged on a same layer, and the sensing electrodes, the drive electrodes and the second electrode wires are respectively arranged on different layers.

2. The touch panel according to claim 1 , wherein
the touch panel further comprises a first transparent insulating layer covering the base substrate and the first touch electrodes, and the second touch electrodes are disposed on the first transparent insulating layer.

3. The touch panel according to claim 1 , wherein the second touch electrode is a strip electrode.

4. The touch panel according to claim 3 , wherein
the strip electrode has different widths at two ends in the extending direction thereof.

5. The touch panel according to claim 3 ,
wherein an edge of the strip electrode is serrated.

6. The touch panel according to claim 2 , wherein the first touch electrodes and the second touch electrodes are connected to a controller.

7. The touch panel according to claim 6 , wherein the touch panel further comprises:
first electrode wires disposed on the base substrate, the first electrode wires connecting the first touch electrodes to the controller; and
second electrode wires disposed on the base substrate, the second electrode wires connecting the second touch electrodes to the controller.

8. The touch panel according to claim 7 , wherein the first touch electrodes comprise drive electrodes and sensing electrodes disposed in a cross-insulated manner;
the first electrode wires comprise drive wires and sensing wires, wherein the drive wires connect the drive electrodes to the controller, and the sensing wires connect the sensing electrodes to the controller; and
the touch panel further comprises a second transparent insulating layer covering the base substrate and the drive electrodes, wherein the sensing electrodes are disposed on the second transparent insulating layer.

9. The touch panel according to claim 1 , wherein
the first touch electrode and the second touch electrode contain indium tin oxide; and
the first transparent insulating layer and the second transparent insulating layer contain transparent resin.

10. A method for manufacturing a touch panel, comprising: forming first touch electrodes and second touch electrodes on a base substrate; wherein the first touch electrodes are disposed in a center region of the base substrate, and the second touch electrodes are disposed in an edge region of the base substrate,
wherein the touch panel further comprises first electrode wires and second electrode wires, the first electrode wires comprising drive wires; and the first touch electrodes comprise drive electrodes and sensing electrodes, and
wherein the drive electrodes and the drive wires are arranged on a same layer, the second touch electrodes and the second electrode wires are arranged on a same layer, and the sensing electrodes, the drive electrodes and the second electrode wires are respectively arranged on different layers.

11. The method according to claim 10 , wherein
forming the first touch electrodes and the second touch electrodes on the base substrate comprises:
forming the first touch electrodes in the center region of the base substrate;
forming a first transparent insulating layer on the first touch electrodes and the base substrate; and
forming the second touch electrodes on the first transparent insulating layer in the edge region of the base substrate.

12. The method according to claim 11 , wherein the second touch electrode is a strip electrode.

13. The method according to claim 12 , wherein
the strip electrode has different widths at the two ends in the extending direction thereof.

14. The method according to claim 12 , further comprising forming a controller, wherein the first touch electrodes and the second touch electrodes are connected to the controller.

15. The method according to claim 14 , wherein forming the first touch electrodes in the center region of the base substrate comprises:
forming the first touch electrodes and first electrode wires on the base substrate, the first touch electrodes being connected to the controller through the first electrode wires; and
forming the second touch electrodes on the first transparent insulating layer in the edge region of the base substrate comprises:
forming the second touch electrodes and second electrode wires on the first transparent insulating layer, the second touch electrodes being connected to the controller through the second electrode wires.

16. The method according to claim 15 , wherein
the first touch electrodes comprise drive electrodes and sensing electrodes disposed in a cross-insulated manner; and
the first electrode wires comprise drive wires connecting the drive electrodes to the controller and sensing wires connecting the sensing electrodes to the controller; and
forming the first touch electrodes and the first electrode wires on the base substrate comprises:
forming the drive electrodes and the drive wires on the base substrate;
forming a second transparent insulating layer on the drive electrodes and the drive wires; and
forming the sensing electrodes and the sensing wires on the second transparent insulating layer.

17. A touch display device, comprising a touch panel wherein the touch panel comprises:
a base substrate; and
first touch electrodes and second touch electrodes that are disposed on the base substrate,
wherein the first touch electrodes are disposed in a center region of the base substrate, and the second touch electrodes are disposed in an edge region of the base substrate,
wherein the touch panel further comprises first electrode wires and second electrode wires, the first electrode wires comprising drive wires; and the first touch electrodes comprise drive electrodes and sensing electrodes, and
wherein the drive electrodes and the drive wires are arranged on a same layer, the second touch electrodes and the second electrode wires are arranged on a same layer, and the sensing electrodes, the drive electrodes and the second electrode wires are respectively arranged on different layers.

18. The touch panel according to claim 8 , wherein
the drive electrodes and the drive wires are disposed in the same layer, the sensing electrodes and the sensing wires are disposed in the same layer, and the second touch electrodes and the second electrode wires are disposed in the same layer.

19. The method according to claim 11 , wherein
the first touch electrode and the second touch electrode contain indium tin oxide; and
the first transparent insulating layer and the second transparent insulating layer contain transparent resin.

20. The method according to claim 13 , wherein an edge of the strip electrode is serrated.

Assignees

• Boe Technology Group Co Ltd
• Hefei Xinsheng Optoelectronics Technology Co Ltd

Inventors

• Xie Xiaodong
• Zhang Ming
• Hu Ming
• Wang Jing
• Wang Qingpu
• Zhu Shuncheng

Classifications

• G06F3/044

  by capacitive means · CPC title

• G06F2203/04103

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

• G06F3/0416

  Control or interface arrangements specially adapted for digitisers · CPC title

• G06F3/0448

  Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality · CPC title

• G06F3/04164 Primary

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