Touch-control panel, a manufacturing method thereof, and a display device

• US 10,788,930 B2
• Filed: 12/18/2019
• Issued: 09/29/2020
• Est. Priority Date: 06/30/2018
• Status: Active Grant

• Current Assignee: Yungu (Gu'An) Technology Co., Ltd.
• Original Assignee: Yungu (Gu'An) Technology Co., Ltd.
• Inventors: Chen, Long, Qiao, Guizhou, Zhang, Xiuyu
• Primary Examiner(s): Polo, Gustavo
• Application Number:
  US16/718,220
• Publication Number:
  US 20200125209A1
• Time in Patent Office: 286 Days
• CPC Class Codes: G06F 2203/04102 Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0416 Control or interface arrangements specially adapted for digitisers
• CPC Class Codes: G06F 3/047 using sets of wires, e.g. crossed wires

Abstract

The present application discloses a touch-control panel, a manufacturing method thereof, and a display device. The touch-control panel comprises a flexible substrate, a touch-control electrode layer and a conductive layer, wherein the touch-control electrode layer comprises a nanometal pattern and a wiring pattern contacting with each other to establish an electric connection therebetween, and the conductive layer at least partially covers a contact region of the wiring pattern in contact with the nanometal pattern. The method for manufacturing a touch-control panel comprises: providing a flexible substrate; forming a touch-control electrode layer; and forming a conductive layer; wherein, the touch-control electrode layer comprises a nanometal pattern and a wiring pattern contacting with each other to establish an electric connection, and the touch-control electrode layer at least partially covers a contact region of the wiring pattern in contact with the nanometal pattern.

Claims

1. A touch-control panel, comprising:

a flexible substrate having a surface, the surface including;

a display area; and

at least one peripheral area adjacent the display area;

a touch-control electrode layer disposed on the surface of the flexible substrate, the touch-control electrode layer comprising;

a nanometal pattern coupled to the display area of the surface of the flexible substrate; and

a wiring pattern coupled to the at least one peripheral area of the surface of the flexible substrate, the wiring pattern contacting with the nanometal pattern in a contact region to establish an electric connection therebetween; and

a conductive layer disposed on the touch-control electrode layer, the conductive layer at least partially covering the contact region and extending partially into the display area and partially into the at least one peripheral area.

2. The touch-control panel according to claim 1, wherein, the conductive layer is made of material comprising indium tin oxide.

3. The touch-control panel according to claim 1, wherein, the conductive layer, along a direction extending from the wiring pattern to the nanometal pattern, has a coverage width of 5 μ

m-20 μ

m.

4. The touch-control panel according to claim 3, wherein, the conductive layer, along a direction extending from the wiring pattern to the nanometal pattern, has a coverage width of 10 μ

m-15 μ

m.

5. The touch-control panel according to claim 3, wherein, along a direction extending from the wiring pattern to the nanometal pattern, the conductive layer has a width covering upon the wiring pattern equal to that of the conductive layer covering upon the nanometal pattern.

6. The touch-control panel according to claim 1, further comprising a protective layer covering an exposed portion of the nanometal pattern.

7. The touch-control panel according to claim 6, wherein, the protective layer has a thickness equal to that of the conductive layer.

8. The touch-control panel according to claim 1, wherein, the nanometal pattern comprises a silver nanowire pattern, and the wiring pattern includes a silver wire pattern.

9. The touch-control panel according to claim 8, wherein, silver nanowires in the silver nanowire pattern have a length of 10 μ

m-300 μ

m and a diameter less than 500 nm, and a ratio of the length of the silver nanowire to the diameter of the silver nanowire is larger than 10.

10. The touch-control panel according to claim 1, wherein, the wiring pattern corresponds to a bezel zone of the touch-control panel.

11. The touch-control panel according to claim 10, wherein, the bezel zone of the touch-control panel has a left bezel zone and a right bezel zone, and the wiring pattern is located on opposite lateral sides of the nanometal pattern.

12. The touch-control panel according to claim 10, wherein, the touch-control panel has four bezel zones that form an annular shape, and the wiring pattern is arranged to surround the nanometal pattern.

13. A display device, comprising a touch-control panel according to claim 1.

14. A method for manufacturing a touch-control panel, comprising:

providing a flexible substrate having a surface, the surface including;

a display area; and

at least one peripheral area adjacent the display area;

forming a touch-control electrode layer on the surface of the flexible substrate, the touch-control electrode layer comprising;

a nanometal pattern coupled to the display area of the surface of the flexible substrate; and

a wiring pattern coupled to the at least one peripheral area of the surface of the flexible substrate, the wiring pattern contacting with the nanometal pattern in a contact region to establish an electric connection therebetween; and

forming a conductive layer on the touch-control electrode layer, the conductive layer at least partially covering the contact region and extending partially into the display area and partially into the at least one peripheral area.

15. The method according to claim 14, wherein, the step of forming the conductive layer comprises coating to form the conductive layer.

16. The method according to claim 14, wherein, further comprising forming a protective layer on a portion of the nanometal pattern uncovered by the conductive layer.

17. The method according to claim 14, wherein, the step of forming the touch-control electrode layer comprises:

coating a nanometal layer on the display area of the flexible substrate;

laser-etching the nanometal layer to form the nanometal pattern;

forming a conductive slurry on the at least one peripheral area of the flexible substrate;

laser-etching the conductive slurry to form the wiring pattern.

18. The method according to claim 14, wherein, the step of forming the touch-control electrode layer comprises:

coating a nanometal layer on the display area of the flexible substrate;

forming a conductive slurry on the at least one peripheral area of the flexible substrate;

laser-etching the nanometal layer and the conductive slurry simultaneously to form the nanometal pattern and the wiring pattern.

19. The method according to claim 17, wherein, the at least one peripheral area corresponds to a bezel zone of the touch-control panel.