Touch panel and method of manufacturing the same, electronic device

Patent metadata

Field	Value
Publication number	US-11531436-B2
Application number	US-201916473786-A
Country	US
Kind code	B2
Filing date	Jan 8, 2019
Priority date	Jun 22, 2018
Publication date	Dec 20, 2022
Grant date	Dec 20, 2022

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

What is claimed is:

1. A touch panel, comprising:
a bending area bent along a bending axis;
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;
wherein each of the plurality of first touch electrodes includes a first touch electrode portion and a first connection line which are alternately connected, each of the plurality of second touch electrodes includes a second touch electrode portion and a second connection line which are alternately connected;
the second touch electrode portions are provided in a same layer as the second connection lines, and the touch panel further includes a first insulating layer between part of the first touch electrode portions and part of the first connection lines, the first touch electrode portions being electrically connected to the first connection lines through first via holes in the first insulating layer; and
the first metal mesh line is provided in a same layer as the first connection lines and is electrically connected to the first connection lines, so as to be connected with the first touch electrodes in parallel.

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 the 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 electrode portions are provided in a same layer as the second touch electrode portion, and the first connection lines and the second connection lines are insulated from each other and overlapped with each other.

5. The touch panel of claim 1 , wherein the metal mesh pattern further comprises a second metal mesh line, the second metal mesh line being configured as the first connection lines.

6. The touch panel according to claim 1 , wherein
an other part of each first touch electrode portion is provided in a same layer as a corresponding part of a corresponding first connection line, and the touch panel further includes a second insulating layer between the second touch electrode portions and the second connection lines, the second touch electrode portions being electrically connected to the second connection lines through first via holes in the second insulating layer.

7. The touch panel according to claim 6 , wherein the first metal mesh line is provided in a same layer as the second connection lines and insulated from the second connection lines, and is connected with the first touch electrodes in parallel through a second via hole in the second insulating layer.

8. An electronic device, comprising a touch panel, wherein the touch panel comprises:
a bending area bent along a bending axis;
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;
wherein each of the plurality of first touch electrodes includes a first touch electrode portion and a first connection line which are alternately connected, each of the plurality of second touch electrodes includes a second touch electrode portion and a second connection line which are alternately connected;
the second touch electrode portions are provided in a same layer as the second connection lines, and the touch panel further includes an insulating layer between part of each first touch electrode portion and part of a corresponding first connection line, the first touch electrode portions being electrically connected to the first connection lines through first via holes in the insulating layer; and
the first metal mesh line is provided in a same layer as the first connection lines and is electrically connected to the first connection lines, so as to be connected with the first touch electrodes in parallel.

9. The electronic device according to claim 8 , further comprising a display panel, wherein the touch panel is stacked with the display panel.

10. A method of manufacturing a touch panel, the touch panel comprising a bending area, the 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 plurality of first touch electrodes in parallel, and the second direction intersecting with the first direction,
wherein each of the plurality of second touch electrodes comprises a second touch electrode portion and a second connection line which are alternately connected, the metal mesh pattern and the second connection lines are formed in a same patterning process and insulated from each other.

11. The method according to claim 10 , wherein each of the plurality of first touch electrodes comprises a first touch electrode portion and a first connection line which are alternately connected, the first metal mesh lines and the first connection lines being formed in a single patterning process and electrically connected with each other.

12. The method according to claim 11 , wherein the metal mesh pattern further comprises a second metal mesh line, the second metal mesh line being formed as the first connection lines.

13. The method according to claim 10 , further comprising:
forming an insulating layer between an other part of the metal mesh pattern and a corresponding part of each second touch electrode portion, and forming first via holes in the insulating layer, wherein the second touch electrode portions are electrically connected to the second connection lines through the first via holes in the insulating layer.

14. The method according to claim 13 , further comprising
forming a second via hole in the insulating layer while the first via holes are formed, the first metal mesh line being connected with a first touch electrode in parallel through the second via hole.

15. The method according to claim 10 , wherein
each of the plurality of first touch electrodes includes a first touch electrode portion and a first connection line which are alternately connected; and
the first touch electrode portions are formed in a same layer as the second touch electrode portions, and the first connection lines and the second connection lines are formed to be insulated from each other and overlapped with each other.

Assignees

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

Inventors

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

Classifications

• G06F2203/04112

  Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material · CPC title

• G06F2203/04103

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

• 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

• G06F2203/04107

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