Touch display panel and touch display device

Patent metadata

Field	Value
Publication number	US-10055041-B2
Application number	US-201815891191-A
Country	US
Kind code	B2
Filing date	Feb 7, 2018
Priority date	Dec 22, 2014
Publication date	Aug 21, 2018
Grant date	Aug 21, 2018

Abstract

A display panel and a display device, where the display panel includes a display region and a frame region surrounding the display region. The display panel includes a peripheral touch structure disposed in the frame region and an internal touch structure disposed in the display region.

First claim

We claim:

1. A touch display panel, comprising:
a display region;
a frame region surrounding the display region;
a peripheral touch structure disposed in the frame region; and
an internal touch structure disposed in the display region;
wherein the peripheral touch structure comprises a plurality of first touch driving electrodes, the internal touch structure comprises a plurality of second touch driving electrodes and a plurality of touch sensing electrodes,
projections of the plurality of second touch driving electrodes on the display region are intersected with projections of the plurality of touch sensing electrodes on the display region,
the plurality of first touch driving electrodes and the plurality of second touch driving electrodes are disposed in parallel,
the plurality of first touch driving electrodes, the plurality of second touch driving electrodes and the plurality of touch sensing electrodes are stripe-shaped,
the peripheral touch structure is insulated from the internal touch structure, the peripheral touch structure configured to receive a peripheral touch driving signal and generate a peripheral touch sensing signal, and
the internal touch structure is configured to receive an internal touch driving signal and generate an internal touch sensing signal different from the peripheral touch sensing signal.

2. The touch display panel of claim 1 , wherein the peripheral touch driving signal received by the peripheral touch structure is different from the internal touch driving signal received by the internal touch structure.

3. The touch display panel of claim 1 , wherein the peripheral touch structure is provided in the frame region at one, two, three or four sides of the display region.

4. The touch display panel of claim 1 , wherein the plurality of first touch driving electrodes comprises a plurality of first touch electrodes and a plurality of second touch electrodes; the display panel comprises a color filter substrate and an array substrate arranged opposite to the color filter substrate, and the first touch electrode is disposed on a side of the color filter substrate or is disposed on a side of the array substrate that faces the color filter substrate; and the second touch electrode is disposed on a side of the color filter substrate or is disposed on a side of the array substrate that faces the color filter substrate.

5. The touch display panel of claim 4 , wherein the first touch electrodes and the second touch electrodes are located in the same layer and are disposed in parallel and spaced from each other.

6. The touch display panel of claim 5 , wherein a row of second touch electrodes and a row of first touch electrodes adjacent to the row of second touch electrodes form a touch electrode group; or a column of second touch electrodes and a column of first touch electrodes adjacent to the column of second touch electrodes form a touch electrode group.

7. The touch display panel of claim 5 , wherein
a row of second touch electrodes and two rows of first touch electrodes respectively disposed adjacently at two sides of the row of second touch electrodes form a touch electrode group; or
a column of second touch electrodes and two columns of first touch electrodes respectively disposed adjacently at two sides of the column of second touch electrodes form a touch electrode group.

8. The touch display panel of claim 5 , comprising at least one the touch electrode group.

9. The touch display panel of claim 4 , wherein the first touch electrodes are arranged to be intersected with the second touch electrodes.

10. The touch display panel of claim 1 , further comprising:
a common electrode layer located in the display region, wherein the common electrode layer comprises the internal touch structure; and
in a display state, the common electrode layer is configured to receive a common voltage signal, and in a touch state, the common electrode layer is configured to receive the internal touch driving signal or output the internal touch sensing signal.

11. The touch display panel of claim 1 , further comprising:
a common electrode layer and a third touch layer located in the display region, wherein the third touch layer comprises a plurality of third touch electrodes, and the common electrode layer and the third touch layer form the internal touch structure; and
the common electrode layer is configured to receive a common voltage signal in a display state, and receive the internal touch driving signal in a touch state.

12. The touch display panel of claim 10 , further comprising an array substrate; and a color filter substrate disposed opposite to the array substrate; wherein, the common electrode layer is disposed on a side of the color filter substrate that faces the array substrate or is disposed on a side of the array substrate that faces the color filter substrate.

13. The touch display panel of claim 11 , further comprising an array substrate; and a color filter substrate disposed opposite to the array substrate; wherein the third touch electrodes are disposed on a side of the color filter substrate that faces the array substrate or is disposed on a side of the color filter substrate that is away from the array substrate.

14. The touch display panel of claim 13 , wherein the plurality of first touch driving electrodes comprises a plurality of first touch electrodes and a plurality of second touch electrodes, wherein the plurality of first touch electrodes and/or the plurality of second touch electrodes are located in the same layer as the plurality of third touch electrodes.

15. A touch display device, comprising a touch display panel comprising:
a display region;
a frame region surrounding the display region;
a peripheral touch structure disposed in the frame region; and
an internal touch structure disposed in the display region;
wherein the peripheral touch structure comprises a plurality of first touch driving electrodes, the internal touch structure comprises a plurality of second touch driving electrodes and a plurality of touch sensing electrodes,
projections of the plurality of second touch driving electrodes on the display region are intersected with projections of the plurality of touch sensing electrodes on the display region,
the plurality of first touch driving electrodes and the plurality of second touch driving electrodes are disposed in parallel,
the plurality of first touch driving electrodes, the plurality of second touch driving electrodes and the plurality of touch sensing electrodes are stripe-shaped,
the peripheral touch structure is insulated from the internal touch structure, the peripheral touch structure is configured to receive a peripheral touch driving signal and generate a peripheral touch sensing signal, and
the internal touch structure is configured to receive an internal touch driving signal and generate an internal touch sensing signal different from the peripheral touch sensing signal.

16. The touch display device of claim 15 , wherein the peripheral touch driving signal received by the peripheral touch structure is different from the internal touch driving signal received by the internal touch structure.

17. The touch display device of claim 15 , wherein the peripheral touch structure is provided in the frame region at one, two, three or four sides of the display region.

18. The touch display device of claim 15 , wherein the plurality of first touch driving electrodes comprises a plurality of first touch electrodes and a plurality of second touch electrodes;
the display panel c

Assignees

• Shanghai Tianma Micro Elect Co
• Tianma Micro Electronics Co Ltd

Inventors

• Li Gujun
• Zhou Xingyao
• Yang Kang
• Sun Yungang
• Li Xiaoye
• Liu Gang
• Zhang Xianxiang
• Xu Yingying

Classifications

• G06F3/044

  by capacitive means · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/0445

  using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer · 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