Touch display panels and touch display devices

Patent metadata

Field	Value
Publication number	US-11977288-B1
Application number	US-202318458151-A
Country	US
Kind code	B1
Filing date	Aug 30, 2023
Priority date	Dec 19, 2022
Publication date	May 7, 2024
Grant date	May 7, 2024

Abstract

A touch display panel includes first and second substrates that are disposed opposite to each other, and a liquid crystal layer between the first and second substrates. The first substrate includes a base substrate, a plurality of data lines, at least two touch wirings, at least two touch electrodes, and a pixel electrode. The data lines and the touch wirings are disposed on the base substrate. The touch electrodes are provided at a side of the data lines away from the base substrate. There is a gap between two adjacent touch electrodes. In a direction perpendicular to the base substrate, the gap overlaps with at least a portion of the touch wirings, the data lines overlap with the touch electrodes, and the data lines do not overlap with the gap. The pixel electrode is disposed at a side of the touch electrodes away from the base substrate.

First claim

What is claimed is:

1. A touch display panel comprising a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer disposed between the first substrate and the second substrate, wherein the first substrate comprises:
a first base substrate;
a plurality of data lines disposed on the first base substrate;
at least two touch wirings disposed on the first base substrate;
at least two touch electrodes disposed at a side of the data lines away from the first base substrate, wherein there is a gap between two adjacent touch electrodes of the at least two touch electrodes, and wherein in a direction perpendicular to the first base substrate, the gap overlaps with at least a portion of a corresponding touch wiring of the at least two touch wirings, the data lines overlap with the at least two touch electrodes, and the data lines do not overlap with the gap; and
a pixel electrode disposed at a side of the at least two touch electrodes away from the first base substrate.

2. The touch display panel according to claim 1 , wherein an orthographic projection of the gap on the first base substrate completely covers the at least a portion of the corresponding touch wiring of the at least two touch wirings in the direction perpendicular to the first base substrate.

3. The touch display panel according to claim 1 , wherein the data lines and the at least two touch wirings are arranged in a same layer, and one of the at least two touch wirings is arranged between two adjacent data lines of the data lines.

4. The touch display panel according to claim 3 , wherein the at least two touch wirings are parallel to the data lines.

5. The touch display panel according to claim 1 , wherein the pixel electrode is disposed at a side of the at least two touch electrodes away from the first base substrate, and an orthographic projection of the pixel electrode on the first base substrate partially covers the gap.

6. The touch display panel according to claim 1 , wherein the second substrate comprises a second base substrate and a color filter layer disposed at a side of the second base substrate close to the liquid crystal layer,
wherein the color filter layer comprises a black matrix layer and a plurality of color resist sections, the black matrix layer comprises a plurality of first black matrix blocks disposed at intervals, and each of the color resist sections is disposed between two corresponding adjacent first black matrix blocks of the first black matrix blocks, and
wherein in the direction perpendicular to the first base substrate, at least a portion of each of the first black matrix blocks overlaps with a corresponding data line of the data lines, and the at least two touch wirings do not overlap with the first black matrix blocks.

7. The touch display panel according to claim 6 , wherein the black matrix layer further comprises a plurality of second black matrix blocks disposed at intervals, at least a portion of each of the second black matrix blocks overlaps with a corresponding touch wiring of the at least two touch wirings in the direction perpendicular to the first base substrate.

8. The touch display panel according to claim 1 , wherein the at least two touch electrodes further serve as common electrodes and the at least two touch wirings further serve as common electrode lines.

9. The touch display panel according to claim 1 , wherein the first substrate further comprises a color filter layer disposed at a side of the at least two touch electrodes away from the first base substrate, the color filter layer comprises a black matrix layer and a plurality of color resist sections.

10. A touch display device comprising a touch display panel, wherein the touch display panel comprising a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer disposed between the first substrate and the second substrate, and
wherein the first substrate comprises:
a first base substrate;
a plurality of data lines disposed on the first base substrate;
at least two touch wirings disposed on the first base substrate;
at least two touch electrodes disposed at a side of the data lines away from the first base substrate, wherein there is a gap between two adjacent touch electrodes of the at least two touch electrodes, and wherein in a direction perpendicular to the first base substrate, the gap overlaps with at least a portion of a corresponding touch wiring of the at least two touch wirings, the data lines overlap with the at least two touch electrodes, and the data lines do not overlap with the gap; and
a pixel electrode disposed at a side of the at least two touch electrodes away from the first base substrate.

11. The touch display device according to claim 10 , wherein an orthographic projection of the gap on the first base substrate completely covers the at least a portion of the corresponding touch wiring of the at least two touch wirings in the direction perpendicular to the first base substrate.

12. The touch display panel according to claim 10 , wherein the data lines and the at least two touch wirings are arranged in a same layer, and one of the at least two touch wirings is arranged between two adjacent data lines of the data lines.

13. The touch display panel according to claim 12 , wherein the at least two touch wirings are parallel to the data lines.

14. The touch display panel according to claim 10 , wherein the pixel electrode is disposed at a side of the at least two touch electrodes away from the first base substrate, and an orthographic projection of the pixel electrode on the first base substrate partially covers the gap.

15. The touch display panel according to claim 10 , wherein the second substrate comprises a second base substrate and a color filter layer disposed at a side of the second base substrate close to the liquid crystal layer,
wherein the color filter layer comprises a black matrix layer and a plurality of color resist sections, the black matrix layer comprises a plurality of first black matrix blocks disposed at intervals, and each of the color resist sections is disposed between two corresponding adjacent first black matrix blocks of the first black matrix blocks, and
wherein in the direction perpendicular to the first base substrate, at least a portion of each of the first black matrix blocks overlaps with a corresponding data line of the data lines, and the at least two touch wirings do not overlap with the first black matrix blocks.

16. The touch display panel according to claim 15 , wherein the black matrix layer further comprises a plurality of second black matrix blocks disposed at intervals, at least a portion of each of the second black matrix blocks overlaps with a corresponding touch wiring of the at least two touch wirings in the direction perpendicular to the first base substrate.

17. The touch display panel according to claim 10 , wherein the at least two touch electrodes further serve as common electrodes and the at least two touch wirings further serve as common electrode lines.

18. The touch display panel according to claim 10 , wherein the first substrate further comprises a color filter layer disposed at a side of the at least two touch electrodes away from the first base substrate, the color filter layer comprises a black matrix layer and a plurality of color resist sections.

Assignees

• Wuhan China Star Optoelectronics Technology Co Ltd
• Wuhan China Star Optoelectronic Tech Co Ltd

Inventors

• Ge Haosen
• Zhao Mang
• Lian Xiaoxu
• Gong Qiang

Classifications

• G02F1/13338 Primary

  Input devices, e.g. touch panels · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G02F1/133512

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title

• G02F1/133514

  Colour filters · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title