Touch Panel and Method Of Manufacturing the Same, Electronic Device

Patent metadata

Field	Value
Publication number	US-2021365152-A1
Application number	US-201916473786-A
Country	US
Kind code	A1
Filing date	Jan 8, 2019
Priority date	Jun 22, 2018
Publication date	Nov 25, 2021
Grant date	—

Abstract

A touch panel and a method of manufacturing the same, an electronic device are provided. The touch panel includes a bending area bent along a bending axis. It further includes: a plurality of first touch electrodes extending along a first direction; a plurality of second touch electrodes extending along a second direction; and a metal mesh pattern at least provided in the bending area. The metal mesh pattern includes a first metal mesh line extending along the first direction and connected with the first touch electrode in parallel. The second direction intersects with the first direction.

First claim

1 . A touch panel, comprising a bending area bent along a bending axis, the touch panel further comprising:
a plurality of first touch electrodes extending along a first direction; a plurality of second touch electrodes extending along a second direction; a metal mesh pattern provided at least in the bending area, including a first metal mesh line, wherein the first metal mesh line extends along the first direction and is connected with the first touch electrodes in parallel, and the second direction intersects with the first direction.

2 . The touch panel according to claim 1 , wherein a direction of the bending axis is parallel to the second direction, and the metal mesh pattern comprises a plurality of the first metal mesh lines insulated from each other, the plurality of first metal mesh lines being respectively connected with the plurality of first touch electrodes in parallel.

3 . The touch panel according to claim 1 , wherein a direction of the bending axis is parallel to the first direction, at least one of the first touch electrodes is located in the bending area, and the first metal mesh line is connected with the at least one of the first touch electrodes in parallel.

4 . The touch panel according to claim 3 , wherein
the first touch electrodes include a first touch electrode portion and a first connection line which are alternately connected, the second touch electrodes include a second touch electrode portion and a second connection line which are alternately connected; and the first touch electrode portion is provided in a same layer as the second touch electrode portion, and the first connection line and the second connection line are insulated from each other and overlapped with each other.

5 . The touch panel according to claim 4 , wherein
the second touch electrode portion is provided in a same layer as the second connection line, and the touch panel further includes an insulating layer between the first touch electrode portion and the first connection line, the first touch electrode portion being electrically connected to the first connection line through a first via hole in the insulating layer.

6 . The touch panel according to claim 5 , wherein the first metal mesh line is provided in a same layer as the first connection line and is electrically connected to the first connection line, so as to be connected with the first touch electrode in parallel.

7 . The touch panel of claim 6 , wherein the metal mesh pattern further comprises a second metal mesh line, the second metal mesh line being configured as the first connection line.

8 . The touch panel according to claim 4 , wherein
the first touch electrode portion is provided in a same layer as the first connection line, and the touch panel further includes an insulating layer between the second touch electrode portion and the second connection line, the second touch electrode portion being electrically connected to the second connection line through a first via hole in the insulating layer.

9 . The touch panel according to claim 8 , wherein the first metal mesh line is provided in a same layer as the second connection line and insulated from the second connection line, and is connected with the first touch electrodes in parallel through a second via hole in the insulating layer.

10 . An electronic device, comprising the touch panel according to claim 1 .

11 . The electronic device according to claim 10 , further comprising a display panel, wherein the touch panel is stacked with the display panel.

12 . A method of manufacturing a touch panel, the touch panel comprising a bending area, the manufacturing method comprising:
forming a plurality of first touch electrodes extending along a first direction; forming a plurality of second touch electrodes extending along a second direction; and forming a metal mesh pattern in the bending area, wherein the metal mesh pattern includes a first metal mesh line, the first metal mesh line extending along the first direction and being connected with the first touch electrodes in parallel, and the second direction intersecting with the first direction.

13 . The manufacturing method according to claim 12 , wherein the first touch electrode comprises a first touch electrode portion and a first connection line which are alternately connected, the first metal mesh line and the first connection line being formed in a single patterning process and electrically connected with each other.

14 . The manufacturing method according to claim 13 , wherein the metal mesh pattern further comprises a second metal mesh line, the second metal mesh line being formed as the first connection line.

15 . The manufacturing method according to claim 12 , wherein the second touch electrode comprises a second touch electrode portion and a second connection line which are alternately connected, the metal mesh pattern and the second connection line being formed in a same patterning process and insulated from each other.

16 . The manufacturing method according to claim 15 , further comprising:
forming an insulating layer between the metal mesh pattern and the second touch electrode portion, and forming a first via hole in the insulating layer, wherein the second touch electrode portion is electrically connected to the second connection line through the first via hole.

17 . The manufacturing method according to claim 16 , further comprising
forming a second via hole in the insulating layer while the first via hole is formed, the first metal mesh line being connected with the first touch electrode in parallel through the second via hole.

18 . The touch panel according to claim 1 , wherein
the first touch electrodes include a first touch electrode portion and a first connection line which are alternately connected, the second touch electrodes include a second touch electrode portion and a second connection line which are alternately connected; and the first touch electrode portion is provided in a same layer as the second touch electrode portion, and the first connection line and the second connection line are insulated from each other and overlapped with each other.

19 . The touch panel according to claim 18 , wherein
the second touch electrode portion is provided in a same layer as the second connection line, and the touch panel further includes an insulating layer between the first touch electrode portion and the first connection line, the first touch electrode portion being electrically connected to the first connection line through a first via hole in the insulating layer.

20 . The touch panel according to claim 19 , wherein the first metal mesh line is provided in a same layer as the first connection line and is electrically connected to the first connection line, so as to be connected with the first touch electrode in parallel.

Assignees

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

Inventors

• Xu Jiawei
• Xie Taofeng
• Fan Wenjin
• Dong Zhao

Classifications

• G06F2203/04107

  Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds · CPC title

• G06F3/0446 Primary

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

• G06F2203/04102

  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 title

• G06F3/044

  by capacitive means · 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