Display panel and display device

Patent metadata

Field	Value
Publication number	US-11520434-B2
Application number	US-202117334413-A
Country	US
Kind code	B2
Filing date	May 28, 2021
Priority date	Oct 27, 2020
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

A display panel and a display device are provided. The display panel comprises an encapsulation layer and a touch control structure on the encapsulation layer. The encapsulation layer comprises a plurality of pixel opening portions and spacing portions between the pixel opening portions. The touch control structure comprises a first conductive film layer, a second conductive film layer and an insulating layer between the first conductive film layer and the second conductive film layer, wherein the first conductive film layer comprises a plurality of touch control blocks, and the second conductive film layer comprises a plurality of touch control lines and a plurality of dummy lines. At least one dummy line is between adjacent touch control lines of at least some touch control lines. Each touch control block is electrically connected to one of the touch control lines via a conductive element arranged in the insulating layer.

First claim

What is claimed is:

1. A display panel, comprising an encapsulation layer and a touch control structure on the encapsulation layer, wherein the encapsulation layer comprises a plurality of pixel opening portions and spacing portions between the pixel opening portions,
wherein the touch control structure comprises a first conductive film layer, a second conductive film layer and an insulating layer between the first conductive film layer and the second conductive film layer in a direction from the encapsulation layer to the touch control structure and perpendicular to the encapsulation layer, the first conductive film layer, the second conductive film layer and the insulating layer are at different layers in the direction from the encapsulation layer to the touch control structure and perpendicular to the encapsulation layer, wherein the first conductive film layer comprises a plurality of touch control blocks, and the second conductive film layer comprises a plurality of touch control lines and a plurality of dummy lines,
at least one of the dummy lines is provided between adjacent touch control lines of at least part of the plurality of touch control lines,
each of the touch control blocks is electrically connected to one of the touch control lines via a conductive element arranged in the insulating layer, and the dummy lines are electrically insulated from the touch control lines, and
at least part of the dummy lines are provided at positions corresponding to the spacing portions,
wherein an arrangement area of at least part of the dummy lines is divided into a plurality of area blocks, and a position and a shape of at least part of the area blocks respectively correspond to a position and a shape of the touch control blocks, and an orthogonal projection of each touch control block onto the encapsulation layer overlaps an orthogonal projection of at least one of the dummy lines of an area block corresponding to the touch control block onto the encapsulation layer;
wherein the area blocks are arranged in columns and rows, a touch detection chip is arranged at a side of the display panel, the quantities of the touch control lines arranged in the area blocks in a same column and the rows away from the chip gradually decreases, and the quantity of the touch control lines in each of area blocks in a last row away from the chip is the smallest and equal to 1.

2. The display panel according to claim 1 , wherein at least one of the dummy lines is provided at the periphery of each of the touch control lines.

3. The display panel according to claim 1 , wherein the dummy lines comprise a plurality of first direction lines that are spaced apart and extend substantially perpendicular to the touch control lines.

4. The display panel according to claim 3 , wherein at least one of the first direction lines is provided at the periphery of each of the touch control lines.

5. The display panel according to claim 3 , wherein the plurality of first direction lines is arranged at equal intervals.

6. The display panel according to claim 1 , wherein the dummy lines comprise a plurality of second direction lines that are arranged substantially parallel to or coaxial with an extension direction of the touch control lines.

7. The display panel according to claim 6 , wherein at least one of the second direction lines is provided at the periphery of each of the touch control lines.

8. The display panel according to claim 6 , wherein the plurality of second direction lines is arranged at equal intervals.

9. The display panel according to claim 3 , wherein the dummy lines comprise a plurality of second direction lines arranged substantially parallel to or coaxial with an extension direction of the touch control lines, and at least some of the first direction lines are connected to each other via a corresponding one of the second direction lines.

10. The display panel according to claim 9 , wherein at least one of the first direction lines and at least one of the second direction lines are arranged at the periphery of each of the touch control lines.

11. The display panel according to claim 1 , wherein orthographic projections of the touch control lines and the dummy lines onto the encapsulation layer are located within the spacing portions of the encapsulation layer.

12. The display panel according to claim 11 , wherein a shape of a pattern formed by each of the touch control lines and dummy lines at the periphery of the touch control line corresponds to a shape of a corresponding one of the pixel opening portions.

13. The display panel according to claim 11 , wherein the touch control lines and the dummy lines are provided at positions corresponding to at least 30% of all the spacing portions of the display panel.

14. The display panel according to claim 11 , wherein each of the touch control blocks is of a grid structure, and comprises grid lines connected with each other, and a grid opening between the grid lines,
wherein a position and a shape of the grid opening respectively correspond to a position and a shape of a corresponding one of the pixel opening portions.

15. The display panel according to claim 14 , wherein at least some grid openings are larger in size than the pixel opening portions.

16. The display panel according to claim 14 , wherein the grid structure is not provided with a grid line at at least part of positions where the grid structure overlaps the touch control lines.

17. A display device, comprising the display panel according to claim 1 .

Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Technology Dev Co Ltd

Inventors

• Liu Lina
• Xiang Dalin

Classifications

• G06F3/044

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• Y02E10/549

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• G06F3/0443

  using a single layer of sensing electrodes · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/04164 Primary

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