Touch sensor and display apparatus

Patent metadata

Field	Value
Publication number	US-11914827-B2
Application number	US-202017427418-A
Country	US
Kind code	B2
Filing date	Mar 19, 2020
Priority date	Mar 19, 2020
Publication date	Feb 27, 2024
Grant date	Feb 27, 2024

Abstract

A touch sensor and a display apparatus are disclosed. The touch sensor includes a first opening region, a second opening region, first touch electrodes and second touch electrodes. at least one of the plurality of first touch electrodes includes a first transition touch electrode; each of a first group of second touch electrodes in the plurality of second touch electrodes further includes a second transition touch electrode the first transition touch sub-electrode at least partially surrounds the first opening region, and the second transition touch sub-electrode at least partially surrounds the second opening region; and at least part of the second transition touch electrode is positioned between the first transition touch sub-electrode and the second transition touch sub-electrode, and extends along the second direction.

First claim

What is claimed is:

1. A touch sensor, comprising: a first opening region, a second opening region, a plurality of first touch electrodes and a plurality of second touch electrodes,
wherein the first opening region and the second opening region are spaced;
a center of the first opening region and a center of the touch sensor do not coincide, and a center of the second opening region and the center of the touch sensor do not coincide;
the plurality of first touch electrodes respectively extend along a first direction, and at least one of the plurality of first touch electrodes comprises a plurality of first touch sub-electrodes arranged side by side in the first direction and electrically connected with each other;
the plurality of second touch electrodes respectively extend along a second direction intersecting with the first direction, and at least one of the plurality of second touch electrodes comprises a plurality of second touch sub-electrodes arranged side by side in the second direction and electrically connected with each other;
the plurality of first touch electrodes are arranged side by side along the second direction, and the plurality of second touch electrodes are arranged side by side along the first direction;
the plurality of first touch sub-electrodes and the plurality of second touch sub-electrodes together at least partially surround the first opening region and the second opening region;
at least one of the plurality of first touch electrodes comprises a first transition touch electrode;
each of a first group of second touch electrodes in the plurality of second touch electrodes further comprises a second transition touch electrode;
at least part of the first transition touch electrode is positioned between the first opening region and the second opening region, and comprises a first transition touch sub-electrode and a second transition touch sub-electrode arranged side by side in the first direction and electrically connected with each other;
the first transition touch sub-electrode at least partially surrounds the first opening region, and the second transition touch sub-electrode at least partially surrounds the second opening region; and
at least part of the second transition touch electrode is positioned between the first transition touch sub-electrode and the second transition touch sub-electrode, and extends along the second direction;
an edge of the second transition touch electrode close to the first transition touch sub-electrode comprises a plurality of first protruding portions protruding towards the first transition touch sub-electrode;
an edge of the second transition touch electrode close to the second transition touch sub-electrode comprises a plurality of second protruding portions protruding towards the second transition touch sub-electrode;
an edge of the first transition touch sub-electrode close to the second transition touch electrode comprises a plurality of first sunk portions;
an edge of the second transition touch sub-electrode close to the second transition touch electrode comprises a plurality of second sunk portions;
the plurality of first protruding portions are correspondingly arranged in the plurality of first sunk portions, and
the plurality of second protruding portions are correspondingly arranged in the plurality of second sunk portions.

2. The touch sensor according to claim 1 , wherein a first edge of the first opening region facing the second opening region is of a first shape;
a second edge of the second opening region facing the first opening region is of a second shape;
an edge of the first transition touch sub-electrode facing the first edge integrally is of the first shape; and
an edge of the second transition touch sub-electrode facing the second edge integrally is of the second shape.

3. The touch sensor according to claim 1 , wherein the plurality of first protruding portions are sequentially arranged in the second direction;
the plurality of second protruding portions are sequentially arranged in the second direction;
the edge of the second transition touch electrode close to the first transition touch sub-electrode further comprises a plurality of third sunk portions;
the edge of the second transition touch electrode close to the second transition touch sub-electrode further comprises a plurality of fourth sunk portions;
there is one third sunk portion between two adjacent first protruding portions, and there is one fourth sunk portion between two adjacent second protruding portions;
bottoms of the plurality of third sunk portions are respectively corresponding to bottoms of the plurality of fourth sunk portions; and
a distance between a bottom of a corresponding third sunk portion and a bottom of a corresponding fourth sunk portion in the first direction is less than a distance from a vertex of any one of the plurality of first protruding portions and the plurality of second protruding portions to a bottom of any one of the plurality of first protruding portions and the plurality of second protruding portions.

4. The touch sensor according to claim 3 , wherein the plurality of first protruding portions and the plurality of second protruding portions correspond one to one; and
a distance between a vertex of each of the plurality of first protruding portions and a vertex of a corresponding second protruding portion in the first direction is less than a minimum distance between an edge of the first opening region and an edge of the second opening region in the first direction.

5. The touch sensor according to claim 4 , wherein the distance between the vertex of each of the plurality of first protruding portions and the vertex of the corresponding second protruding portion in the first direction is less than a distance between two points, which are farthest away from each other, of at least one of a plurality of first touch sub-electrodes in the first direction in the first direction or a distance between two points, which are farthest away from each other, of at least one of a plurality of second touch sub-electrodes in the first direction in the first direction.

6. The touch sensor according to claim 1 , wherein the second transition touch electrode comprises a plurality of third transition touch sub-electrodes arranged side by side in the second direction and electrically connected with each other;
each of the plurality of third transition touch sub-electrodes comprises at least one first protruding portion and at least one second protruding portion;
the at least one first protruding portion and the at least one second protruding portion correspond one to one; and
any two adjacent third transition touch sub-electrodes are of an integral structure and directly connected.

7. The touch sensor according to claim 1 , wherein at least one of the plurality of first touch electrodes is separated by the first opening region and the second opening region into a first electrode portion and a second electrode portion; and
the first electrode portion and the second electrode portion are electrically connected with each other at least via the first transition touch electrode.

8. The touch sensor according to claim 7 , further comprising at least one first jumper conductor wire and at least one first conducting electrode,
wherein the at least one first jumper conductor wire partially surrounds the first opening region;
the at least one first conducting electrode is directly connected to an end portion of a corresponding jumper conductor wire close to the first electrode portion;
the first transition touch sub-electrode partially surrounds the first opening region; and
the first electrode portion and the first transition touch sub-electrode are electrically connec

Assignees

• Chengdu Boe Optoelect Tech Co
• Boe Technology Group Co Ltd

Inventors

• Niu Wenxiao
• Zhang Guiyu
• Mu Shiheng
• Luo Hongqiang
• Zhu Xiaolong

Classifications

• G06F3/0446 Primary

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

• G06F3/0412

  Digitisers structurally integrated in a display · 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

• 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