Touch sensor and display apparatus

Patent metadata

Field	Value
Publication number	US-11907467-B2
Application number	US-202017427423-A
Country	US
Kind code	B2
Filing date	Mar 19, 2020
Priority date	Mar 19, 2020
Publication date	Feb 20, 2024
Grant date	Feb 20, 2024

Abstract

A touch sensor and a display apparatus are disclosed. The touch sensor includes a first opening region, first touch electrodes and second touch electrodes. The first touch electrodes respectively extend along a first direction, and at least one of the first touch electrodes includes first touch sub-electrodes arranged side by side in the first direction and electrically connected with each other; the second touch electrodes respectively extend along a second direction, and at least one of the second touch electrodes includes second touch sub-electrodes arranged side by side in the second direction and electrically connected with each other; an area of a first touch sub-electrode in the first region is less than that of a first touch sub-electrode in the third region, or an area of a second touch sub-electrode in the first region is less than that of a second touch sub-electrode in the third region.

First claim

What is claimed is:

1. A touch sensor, comprising: a first opening region, a plurality of first touch electrodes and a plurality of second touch electrodes,
wherein a center of the first opening region and a 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; and
the plurality of first touch sub-electrodes and the plurality of second touch sub-electrodes together at least partially surround the first opening region;
the touch sensor has a first region, a second region and a third region which are sequentially laid out in the second direction,
the first opening region is positioned in the second region; and
an area of a first touch sub-electrode in the first region is less than that of a first touch sub-electrode in the third region, or an area of a second touch sub-electrode in the first region is less than that of a second touch sub-electrode in the third region;
the at least one of the plurality of second touch electrodes is separated into a first electrode portion and a second electrode portion by the second region;
the first electrode portion is positioned in the first region, and the second electrode portion is positioned in the third region; and
a maximum size of the first electrode portion in the second direction is less than a maximum size of the second electrode portion in the second direction.

2. The touch sensor according to claim 1 , wherein the size of the first electrode portion in the second direction is less than the size of the second touch sub-electrode, positioned in the third region and having a maximum size, in the second direction.

3. The touch sensor according to claim 1 , wherein a distance between two adjacent second touch sub-electrodes in the first region in the second direction is less than a distance between two adjacent second touch sub-electrodes in the third region in the second direction.

4. The touch sensor according to claim 1 , further comprising a first electrode layer and a connecting electrode layer,
wherein the first electrode layer is different from the connecting electrode layer;
the first electrode layer comprises the plurality of first touch electrodes, the plurality of second touch electrodes and a plurality of intermediate sub-electrodes;
the connecting electrode layer comprises a plurality of first connecting sub-electrodes;
at least one of the plurality of intermediate sub-electrodes is positioned in the third region, and arranged between two adjacent second touch sub-electrodes in the third region;
both ends of each first connecting sub-electrode in the third region are respectively, electrically connected with one corresponding second touch sub-electrode and one corresponding intermediate sub-electrode; and
both ends of each first connecting sub-electrode in the first region are respectively, electrically connected with two adjacent second touch sub-electrodes.

5. The touch sensor according to claim 4 , wherein an area of each first connecting sub-electrode in the first region is greater than an area of each first connecting sub-electrode in the third region.

6. The touch sensor according to claim 4 , wherein a length of each first connecting sub-electrode in the first region is greater than a length of each first connecting sub-electrode in the third region.

7. The touch sensor according to claim 6 , wherein a width of each first connecting sub-electrode in the first region is greater than a width of each first connecting sub-electrode in the third region.

8. The touch sensor according to claim 4 , wherein the plurality of second touch electrodes comprise the plurality of first connecting sub-electrodes.

9. The touch sensor according to claim 4 , wherein the first electrode layer further comprises a plurality of ring-shaped sub-electrodes;
at least one of the plurality of ring-shaped sub-electrodes is positioned in the third region;
at least one of the plurality of ring-shaped sub-electrodes is positioned between two adjacent first touch sub-electrodes, and surrounds an intermediate sub-electrode positioned between the two adjacent first touch sub-electrodes;
the connecting electrode layer further comprises a plurality of second connecting sub-electrodes;
in the plurality of first touch electrodes in the third region, two adjacent first touch sub-electrodes are electrically connected with each other via a ring-shaped sub-electrode positioned between the two adjacent first touch sub-electrodes and a corresponding third number of second connecting sub-electrodes; and
two adjacent first touch sub-electrodes which at least one first touch electrode in the first region comprises are of an integrated structure and are directly, electrically connected.

10. The touch sensor according to claim 9 , wherein the corresponding third number of second connecting sub-electrodes are arranged in two rows and two columns;
two first connecting sub-electrodes in a same column in the corresponding third number of second connecting sub-electrodes are used for electrically connecting one corresponding first touch sub-electrode and one corresponding ring-shaped sub-electrode;
extending directions of two first connecting sub-electrodes in a same column in the corresponding third number of second connecting sub-electrodes intersect with each other; and
extending directions of two first connecting sub-electrodes in the same row in the corresponding third number of second connecting sub-electrodes intersect with each other.

11. The touch sensor according to claim 9 , wherein the plurality of first touch electrodes comprise at least part of the plurality of second connecting sub-electrodes.

12. The touch sensor according to claim 1 , wherein edges of the first touch sub-electrode and the second touch sub-electrode that are adjacent respectively have corresponding bent structures;
the first touch sub-electrode and the second touch sub-electrode that are adjacent in the first region intersect with each other and have a first intersecting depth;
the first touch sub-electrode and the second touch sub-electrode that are adjacent in the third region intersect with each other and have a second intersecting depth; and
the first intersecting depth is greater than the second intersecting depth.

13. The touch sensor according to claim 1 , comprising: a first opening region, a plurality of first touch electrode and a plurality of second touch electrodes,
wherein a center of the first opening region and a 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

Assignees

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

Inventors

• Niu Wenxiao
• Liang Hengzhen
• Gong Qing
• Mu Shiheng

Classifications

• G06F3/04164 Primary

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

• G06F3/0412

  Digitisers structurally integrated in a display · 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

• H10K59/131

  Interconnections, e.g. wiring lines or terminals · CPC title

• H10K59/40

  OLEDs integrated with touch screens · CPC title