Touch display panel and touch display device

Patent metadata

Field	Value
Publication number	US-10928952-B2
Application number	US-201916460353-A
Country	US
Kind code	B2
Filing date	Jul 2, 2019
Priority date	Dec 17, 2018
Publication date	Feb 23, 2021
Grant date	Feb 23, 2021

Abstract

A touch display panel including first electrodes extending in a first direction and arranged in a second direction, and second electrodes extending in a second direction and arranged in the first direction; each first electrode includes first electrode blocks and first connecting electrodes arranged at intervals in the first direction; in the first electrode, two adjacent first electrode blocks are electrically connected by a first connecting electrode; each second electrode includes second electrode blocks and bridge structures arranged at intervals in the second direction; in each second electrode, two adjacent second electrode blocks are electrically connected by a bridge structure; the second electrode blocks are arranged in a different layer from the bridge structures; the bridge structures intersect the first connecting electrodes, and the dummy electrode is located between each second electrode block and the first connecting electrode adjacent thereto and intersects with the bridge structures.

First claim

What is claimed is:

1. A touch display panel, comprising:
a plurality of first electrodes extending in a first direction and arranged in a second direction, wherein each of the plurality of first electrodes comprises a plurality of first electrode blocks and a plurality of first connecting electrodes, the plurality of first electrode blocks and the plurality of first connecting electrodes are arranged at intervals along the first direction, and in each of the plurality of first electrodes, two adjacent first electrode blocks of the plurality of first electrode blocks are electrically connected by at least one of the plurality of first connecting electrodes;
a plurality of second electrodes extending in the second direction and arranged along the first direction, wherein each of the plurality of second electrodes comprises a plurality of second electrode blocks and a plurality of bridge structures, the plurality of second electrode blocks and the plurality of bridge structures are arranged at intervals along the second direction, and in each of the plurality of second electrodes, two adjacent second electrode blocks of the plurality of second electrode blocks are electrically connected by at least one of the plurality of bridge structures; and wherein the plurality of second electrode blocks are arranged in a different layer from the plurality of bridge structures, and the plurality of bridge structures intersect the plurality of first connecting electrodes; and
a dummy electrode, the dummy electrode being located between each second electrode block of the plurality of second electrode blocks and one of the plurality of first connecting electrodes adjacent to the second electrode block, the dummy electrode intersecting the plurality of bridge structures, the dummy electrode having a shape comprising a plurality of repeated zigzags or a plurality of repeated waves, and the dummy electrode extending only in the first direction.

2. The touch display panel according to claim 1 , wherein each of the plurality of first connecting electrodes is in a zigzag shape or a wave shape.

3. The touch display panel according to claim 2 , wherein each of the plurality of first connecting electrodes has a width smaller than a width of one of the plurality of first electrode blocks in the second direction.

4. The touch display panel according to claim 3 , wherein two adjacent first electrode blocks of the plurality of first electrode blocks are electrically connected by one of the plurality of first connecting electrodes.

5. The touch display panel according to claim 4 , wherein the dummy electrode has a length greater than or equal to a length of each of the plurality of first connecting electrodes in the first direction, and/or
the dummy electrode has a length greater than or equal to a length of each of the plurality of second electrode blocks in the first direction.

6. The touch display panel according to claim 5 , wherein
the dummy electrode comprises a first edge and a second edge, the first edge is close to one second electrode block, adjacent to the dummy electrode, of the plurality of second electrode blocks and the second edge is close to one first connecting electrode, adjacent to the dummy electrode, of the plurality of first connecting electrodes; and
a shape of the first edge is the same as a shape of an edge, opposite to the first edge, of the one second electrode block; and a shape of the second edge is the same as a shape of an edge, opposite to the second edge, of the one first connecting electrode.

7. The touch display panel according to claim 6 , wherein
the first edge has a zigzag shape or a wave shape, and the second edge has a zigzag shape or a wave shape.

8. The touch display panel according to claim 6 , wherein
a distance between the first edge and the second edge in the second direction is greater than or equal to 5 microns.

9. The touch display panel according to claim 1 , wherein the dummy electrode is further located between each second electrode block of the plurality of second electrode blocks and one first electrode block of the plurality of first electrode blocks adjacent to the second electrode block.

10. The touch display panel according to claim 1 , further comprising a plurality of sub-pixels, wherein the dummy electrode does not intersect the plurality of sub-pixels.

11. The touch display panel according to claim 10 , further comprising a pixel definition layer, wherein the pixel definition layer comprises a plurality of aperture regions, the plurality of aperture regions is in one-to-one correspondence with the plurality of sub-pixels, each of the plurality of sub-pixels is located in one of the plurality of aperture regions, and the dummy electrode does not intersect the plurality of aperture regions.

12. The touch display panel according to claim 1 , wherein the dummy electrode is arranged in a same layer as the plurality of first electrode blocks and the plurality of second electrode blocks, and the dummy electrode is made of a same material as the plurality of first electrode blocks and the plurality of second electrode blocks.

13. The touch display panel according to claim 1 , wherein the plurality of first electrode blocks and the plurality of first connecting electrodes are arranged in a same layer, and the plurality of first electrode blocks are made of a same material as the plurality of first connecting electrodes.

14. The touch display panel according to claim 13 , wherein the material of the plurality of first electrode blocks and the plurality of first connecting electrodes comprises indium tin oxide, indium zinc oxide or indium gallium zinc oxide.

15. The touch display panel according to claim 1 , wherein a material of the plurality of bridge structures comprises a metal material.

16. The touch display panel according to claim 1 , wherein the plurality of first electrodes are touch sensing electrodes and the plurality of second electrodes are touch driving electrodes; or the plurality of first electrodes are touch driving electrodes and the plurality of second electrodes are touch sensing electrodes.

17. A touch display device, comprising a touch display panel, wherein the touch display panel comprises:
a plurality of first electrodes extending in a first direction and arranged in a second direction, wherein each of the plurality of first electrodes comprises a plurality of first electrode blocks and a plurality of first connecting electrodes, the plurality of first electrode blocks and the plurality of first connecting electrodes are arranged at intervals along the first direction, and in each of the plurality of first electrodes, two adjacent first electrode blocks of the plurality of first electrode blocks are electrically connected by at least one of the plurality of first connecting electrodes;
a plurality of second electrodes extending in the second direction and arranged along the first direction, wherein each of the plurality of second electrodes comprises a plurality of second electrode blocks and a plurality of bridge structures, the plurality of second electrode blocks and the plurality of bridge structures are arranged at intervals along the second direction, and in each of the plurality of second electrodes, two adjacent second electrode blocks of the plurality of second electrode blocks are electrically connected by at least one of the plurality of bridge structures; and wherein the plurality of second electrode blocks are arranged in a different layer from the plurality of bridge structures, and the plurality of bridge structures inters

Assignees

• Shanghai Tianma Am Oled Co Ltd

Inventors

• Wang Qingxia
• Chen Min
• Huang Kaihong

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

• 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

• G06F3/044

  by capacitive means · CPC title