Display device and electronic apparatus

Patent metadata

Field	Value
Publication number	US-11366541-B2
Application number	US-202017136032-A
Country	US
Kind code	B2
Filing date	Dec 29, 2020
Priority date	Oct 30, 2020
Publication date	Jun 21, 2022
Grant date	Jun 21, 2022

Abstract

A display device and an electric apparatus are provided in the present disclosure. A touch unit of the display device includes a touch layer and an optical compensation layer arranged oppositely, the touch layer includes multiple first electrode groups and multiple second electrode groups, multiple second touch electrodes in the second electrode group are connected to each other through the optical compensation layer, and an orthographic projection of the optical compensation layer on a surface of the touch layer covers the touch layer, so that each position of the touch unit is a double-layer structure formed by the touch layer and the optical compensation layer, which avoids the problem that an electrode bridge in the display device may be visible in some cases caused by different light absorption levels in certain areas of the touch unit due to the different number of film layers.

First claim

What is claimed is:

1. A display device, comprising:
a display unit and a touch unit, wherein
the touch unit comprises a touch layer and an optical compensation layer arranged oppositely, wherein the touch layer and the optical compensation layer are insulated from each other, and an orthographic projection of the optical compensation layer on a surface of the touch layer covers the touch layer;
the touch layer comprises a plurality of first electrode groups arranged along a first direction and extending along a second direction and a plurality of second electrode groups arranged along the second direction and extending along the first direction, wherein the first direction and the second direction intersect, and the plurality of first electrode groups are insulated from the plurality of second electrode groups; and
at least one of the plurality of first electrode groups comprises a plurality of first touch electrodes connected to each other, and at least one of the plurality of second electrode groups comprises a plurality of second touch electrodes electrically connected to each other through the optical compensation layer.

2. The display device according to claim 1 , further comprising an insulation layer arranged between the touch layer and the optical compensation layer, wherein
the insulation layer comprises a plurality of first vias;
the optical compensation layer comprises an optical compensation structure and a first electrode connection structure, wherein the optical compensation structure and the first electrode connection are insulated from each other; and
the first electrode connection structure comprises at least one first connection electrode, wherein the first connection electrode is connected to two adjacent second touch electrodes through the plurality of first vias.

3. The display device according to claim 2 , wherein
the first electrode connection structure comprises at least two first connection electrodes; and
at least one of the plurality of first electrode groups further comprises a first connection portion, and adjacent first touch electrodes of the plurality of first touch electrodes are connected through the first connection portion, wherein the first connection portion comprise a first connection area and a second connection area, a length of the first connection area along the first direction is less than a length of the second connection area along the first direction, and an orthographic projection of the first connection area on the touch layer overlaps an orthographic projection of one first connection electrode on the touch layer.

4. The display device according to claim 2 , wherein the optical compensation layer further comprises a plurality of first isolation structures, and at least one of the plurality of first isolation structures comprises a first slit surrounding the first connection electrode.

5. The display device according to claim 4 , wherein a width of the first slit ranges from 5 μm to 10 μm.

6. The display device according to claim 4 , wherein an edge of the first slit comprises a curved shape.

7. The display device according to claim 1 , wherein an edge of at least one of the plurality of first touch electrodes comprises a curved shape, and an edge of at least one of the plurality of the second touch electrodes comprises the curved shape.

8. The display device according to claim 1 , wherein the optical compensation layer comprises a plurality of third electrode groups arranged along the first direction and extending along the second direction and a plurality of fourth electrode groups arranged along the second direction and extending along the first direction, wherein
the plurality of third electrode groups are insulated from the plurality of fourth electrode groups;
the plurality of third electrode groups are connected in parallel with the plurality of first electrode groups; and
the plurality of fourth electrode groups are connected in parallel with the plurality of second electrode groups.

9. The display device according to claim 8 , further comprising an insulation layer arranged between the touch layer and the optical compensation layer, wherein
the insulation layer comprises a plurality of second vias and a plurality of third vias;
at least one of the plurality of third electrode groups comprises a plurality of third touch electrodes and a plurality of second isolation structures, the plurality of third touch electrodes are electrically connected to the plurality of first electrode groups through the plurality of the second vias, and at least one of the plurality of second isolation structures comprises a second slit surrounding a third touch electrode; and
at least one of the plurality of fourth electrode groups comprises a plurality of fourth touch electrodes connected to each other, and the plurality of fourth touch electrodes are electrically connected to the plurality of second electrode groups through the plurality of third vias.

10. The display device according to claim 9 , wherein an edge of at least one of the plurality of third touch electrodes comprises a curved shape, and an edge of at least one of the plurality of fourth touch electrodes comprises the curved shape.

11. The display device according to claim 8 , further comprising an insulation layer arranged between the touch layer and the optical compensation layer, wherein
the insulation layer comprises a plurality of fourth vias and a plurality of fifth vias;
at least one of the plurality of third electrode groups comprises a plurality of third touch electrodes connected to each other, and the plurality of third touch electrodes are electrically connected to the plurality of first electrode groups through the plurality of fourth vias; and
at least one of the plurality of fourth electrode groups comprises a plurality of fourth touch electrodes, a plurality of third isolation structures and a plurality of second electrode connection structures, and a plurality of fourth touch groups are electrically connected to the plurality of second electrode groups through the plurality of fourth vias, wherein at least one of the plurality of third isolation structures comprises a third slit surrounding a fourth touch electrode, and at least one of the plurality of second electrode connection structures comprises a second connection electrode used to connect adjacent fourth touch electrodes of the plurality of fourth touch electrodes.

12. The display device according to claim 11 , wherein
at least one of the plurality of second electrode connection structures comprises at least two second connection electrodes; and
at least one of the plurality of third electrode groups further comprises a second connection portion, and adjacent third touch electrodes of the plurality of third touch electrodes are connected to each other through the second connection portion, wherein the second connection portion comprises a third connection area and a fourth connection area, a length of the third connection area along the first direction is less than a length of the fourth connection area along the first direction, and an orthographic projection of the third connection area on the touch layer overlaps an orthographic projection of the second connection electrode on the touch layer.

13. The display device according to claim 12 wherein an edge of at least one of the plurality of third touch electrodes comprises a curved shape, and an edge of at least one of the plurality of fourth touch electrodes comprises the curved shape.

14. The display device according to claim 11 wherein an edge of at least one of the plurality of third touch

Assignees

• Wuhan Tianma Micro Electronics Co Ltd
• Wuhan Tianma Microelectronics Co Ltd Shanghai Branch

Inventors

• Chen Min
• Liu Xinzhao
• Wang Qingxia

Classifications

• 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

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title

• G06F3/0446

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