Display panel and display device

Patent metadata

Field	Value
Publication number	US-12426473-B2
Application number	US-202418625152-A
Country	US
Kind code	B2
Filing date	Apr 2, 2024
Priority date	Aug 29, 2023
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

Display panel and display device are provided. The display panel includes a display area and a non-display area. The non-display area includes a bending area and a first area. The first area is located on a side of the bending area away from the display area. The display panel comprises a substrate, a driving array layer disposed on a side of the substrate, and a touch function layer disposed on a side of the driving array layer away from the substrate. The driving array layer includes a first metal layer. In the first area, the first metal layer includes a plurality of first touch signal lines and a plurality of first fixed potential signal lines. At least one first fixed potential signal line of the plurality of first fixed potential signal lines is disposed between two adjacent first touch signal lines of the plurality of first touch signal lines.

First claim

What is claimed is:

1. A display panel, including a display area and a non-display area, wherein:
the non-display area includes a bending area and a first area, and along a first direction, the first area is located on a side of the bending area away from the display area; and
the display panel comprises a substrate, a driving array layer disposed on a side of the substrate, and a touch function layer disposed on a side of the driving array layer away from the substrate, wherein:
the driving array layer at least includes a first metal layer, and no other metal layers are disposed between the first metal layer and the touch function layer;
in the first area, the first metal layer includes a plurality of first touch signal lines and a plurality of first fixed potential signal lines; and
at least one first fixed potential signal line of the plurality of first fixed potential signal lines is disposed between two adjacent first touch signal lines of the plurality of first touch signal lines.

2. The display panel according to claim 1 , wherein:
the plurality of first touch signal lines and the plurality of first fixed potential signal lines each extend along the first direction.

3. The display panel according to claim 1 , wherein:
the plurality of first fixed potential signal lines includes either a positive power supply signal line or a negative power supply signal line.

4. The display panel according to claim 1 , wherein:
the plurality of first fixed potential signal lines includes a negative power supply signal line.

5. The display panel according to claim 1 , wherein:
along a direction perpendicular to a plane of the substrate, a spacing from a first touch signal line of the plurality of first touch signal lines to the substrate is equal to a spacing from a first fixed potential signal line of the plurality of first fixed potential signal lines to the substrate.

6. The display panel according to claim 5 , wherein:
the driving array layer further includes a second metal layer, wherein the second metal layer is disposed on a side of the first metal layer close to the substrate, and a first insulating layer is disposed between the first metal layer and the second metal layer; and
the second metal layer includes a plurality of second metal parts, and the plurality of first fixed potential signal lines is electrically connected to the plurality of second metal parts.

7. The display panel according to claim 6 , wherein:
the plurality of first fixed potential signal lines and the plurality of second metal parts are electrically connected through a plurality of first vias, wherein a first via of the plurality of first vias penetrates a thickness of the first insulating layer.

8. The display panel according to claim 7 , wherein:
at least part of the plurality of first vias is located at a periphery of the first area.

9. The display panel according to claim 6 , wherein:
the second metal part is an entire-surface structure, and an orthographic projection of the second metal part on the substrate covers an orthographic projection of the plurality of first touch signal lines on the substrate.

10. The display panel according to claim 1 , wherein:
along a direction perpendicular to a plane of the substrate, a spacing from a first touch signal line of the plurality of first touch signal lines to the substrate is greater than a spacing from a first fixed potential signal line of the plurality of first fixed potential signal lines to the substrate.

11. The display panel according to claim 10 , wherein:
the driving array layer further includes a second metal layer, wherein the second metal layer is disposed on a side of the first metal layer close to the substrate, and a first insulating layer is disposed between the first metal layer and the second metal layer;
the first insulating layer includes a plurality of hollow parts, and an orthographic projection of the plurality of hollow parts on the substrate overlaps with an orthographic projection of the plurality of first fixed potential signal lines on the substrate; and
the second metal layer includes a plurality of second metal parts, and in a hollow part of the plurality of hollow parts, a first fixed potential signal line of the plurality of first fixed potential signal lines is in direct contact with a second metal part of the plurality of second metal parts.

12. The display panel according to claim 1 , wherein:
the touch function layer at least includes a first protective layer and a second protective layer, wherein the second protective layer is disposed on a side of the first protective layer away from the substrate, the first protective layer includes an inorganic layer, and the second protective layer includes an organic layer.

13. The display panel according to claim 12 , wherein:
the touch function layer includes a third metal layer, wherein the third metal layer is disposed between the first protective layer and the second protective layer;
in the first area, the third metal layer includes a third metal part, wherein the third metal part is an entire-surface structure, and an orthographic projection of the third metal part on the substrate covers an orthographic projection of the plurality of first touch signal lines on the substrate; and
the third metal part is electrically connected to a first fixed potential signal line of the plurality of first fixed potential signal lines through a second via.

14. The display panel according to claim 13 , wherein:
at least part of the third metal part is in direct contact with the first fixed potential signal line in the second via.

15. The display panel according to claim 13 , wherein:
along a direction perpendicular to a plane of the substrate, a spacing from at least part of the third metal part to the substrate is equal to a spacing from a first touch signal line of the plurality of first touch signal lines to the substrate.

16. The display panel according to claim 12 , wherein:
the touch function layer includes a fourth metal layer, wherein the fourth metal layer is disposed between the first protective layer and the second protective layer; and
in the first area, the fourth metal layer includes a plurality of second touch signal lines, wherein an orthographic projection of a second touch signal line of the plurality of second touch signal lines on the substrate is located between orthographic projections of two adjacent first touch signal lines of the plurality of first touch signal lines on the substrate.

17. The display panel according to claim 16 , wherein:
an orthographic projection of the plurality of second touch signal lines on the substrate overlaps with an orthographic projection of the plurality of first fixed potential signal lines on the substrate.

18. The display panel according to claim 1 , wherein:
the display area includes a plurality of first data lines extending along the first direction, and the non-display area includes a plurality of fan-out lines;
a first data line of the plurality of first data lines is electrically connected to a fan-out line of the plurality of fan-out lines through at least one first connection line, and the first connection line is disposed in the display area; and
the first connection line is disposed on the first metal layer.

19. The display panel according to claim 1 , wherein:
the driving array layer includes a thin film transistor array layer, wherein the first metal layer is disposed on a side of the thin film transistor array layer away from the sub

Assignees

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

Inventors

• Wang Qingxia
• Huang Ruiqi
• Zhang Peng
• Huang Jingjing
• Gao You

Classifications

• G06F2203/04107

  Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds · CPC title

• G06F2203/04102

  Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• H10K59/131

  Interconnections, e.g. wiring lines or terminals · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title