Touch display panel, touch display apparatus, and electronic device

Patent metadata

Field	Value
Publication number	US-2026037097-A1
Application number	US-202519358080-A
Country	US
Kind code	A1
Filing date	Oct 14, 2025
Priority date	Apr 18, 2023
Publication date	Feb 5, 2026
Grant date	—

Abstract

This disclosure provides a touch display panel, and an electronic device. The touch display panel includes a display layer, an encapsulation layer, and a touch layer group that are sequentially disposed in a stacked manner. A plurality of touch units arranged in an array, a first metal trace, and a pad are disposed in the touch layer group in an active area, and at least one touch unit includes a first touch electrode area and a second touch electrode area. A second metal trace is disposed in at least one of the first touch electrode area and the second touch electrode area, the second metal trace is used to connect a metal mesh in a touch electrode area in which the second metal trace is located to one end of the first metal trace, and the other end of the first metal trace is connected to the pad.

First claim

1 . A touch display panel, wherein the touch display panel comprises:
a display layer; an encapsulation layer; a touch layer group, comprising:
a plurality of touch units arranged in an array;
a first metal trace; and
a pad, wherein
the touch layer group is sequentially disposed in a stacked manner and located on a side of the encapsulation layer that is away from the display layer; at least one touch unit from the plurality of touch units comprises a first touch electrode area and a second touch electrode area; a first metal mesh is disposed in the first touch electrode area, a second metal mesh is disposed in the second touch electrode area; the first metal mesh and the second metal mesh form an induction capacitor; a second metal trace is disposed in at least one of the first touch electrode area or the second touch electrode area, wherein the second metal trace is used to connect a metal mesh in one of the touch electrode areas in which the second metal trace is located to one end of the first metal trace; the other end of the first metal trace is connected to the pad; and the second metal trace is used to adjust a trace resistance between the at least one touch unit and the pad.

2 . The touch display panel according to claim 1 , wherein
a plurality of pixel areas arranged in an array and a light-shielding area between adjacent pixel areas are disposed at the display layer, and orthographic projections of the first metal mesh, the second metal mesh, and the second metal trace onto the display layer fall within the light-shielding areas.

3 . The touch display panel according to claim 1 , wherein
the first metal mesh comprises a plurality of third metal traces, and the second metal mesh comprises a plurality of fourth metal traces.

4 . The touch display panel according to claim 3 , wherein a trace width of the first metal trace, a trace width of the second metal trace, and a trace width of the third metal trace are the same.

5 . The touch display panel according to claim 1 , wherein
the touch layer group is formed by stacking a first metal layer, an insulation layer, and a second metal layer in a thickness direction of the touch display panel, the insulation layer is disposed between the first metal layer and the second metal layer, and the at least one touch unit is disposed on at least one of the first metal layer or the second metal layer.

6 . The touch display panel according to claim 5 , wherein
the at least one touch unit is disposed at the first metal layer or the second metal layer; and when the second metal trace is disposed in the first touch electrode area of the at least one touch unit, the second metal trace is directly connected to the first metal mesh in the first touch electrode area.

7 . The touch display panel according to claim 5 , wherein
the at least one touch unit is disposed on at least one of the first metal layer or the second metal layer; and when the second metal trace is disposed in the second touch electrode area of the at least one touch unit, the second metal trace is directly connected to the second metal mesh in the second touch electrode area.

8 . The touch display panel according to claim 5 , wherein
the at least one touch unit is disposed at the first metal layer and the second metal layer, and a first through hole is provided at the insulation layer; and when the second metal trace is disposed in the first touch electrode area of the at least one touch unit:
the second metal trace is located at the first metal layer;
the first metal mesh in the first touch electrode area is located at the second metal layer; and
the second metal trace is connected to the first metal mesh through the first through hole.

9 . The touch display panel according to claim 5 , wherein
the at least one touch unit is disposed at the first metal layer and the second metal layer; a second through hole is provided at the insulation layer; and when the second metal trace is disposed in the second touch electrode area of the at least one touch unit:
the second metal trace is located at the first metal layer,
the second metal mesh in the second touch electrode area is located at the second metal layer, and
the second metal trace is connected to the second metal mesh through the second through hole.

10 . The touch display panel according to claim 1 , wherein the at least one touch unit is arranged in a first row or a first column of the array.

11 . A touch display apparatus, wherein the touch display apparatus comprises:
a touch control module; and a touch display panel, comprising:
a display layer,
an encapsulation layer, and
a touch layer group, comprising:
a plurality of touch units arranged in an array;
a first metal trace; and
a pad, wherein

the touch layer group is sequentially disposed in a stacked manner and located on a side of the encapsulation layer that is away from the display layer,
at least one touch unit comprises a first touch electrode area and a second touch electrode area,
a first metal mesh is disposed in the first touch electrode area, a second metal mesh is disposed in the second touch electrode area,
the first metal mesh and the second metal mesh form an induction capacitor,
a second metal trace is disposed in at least one of the first touch electrode area or the second touch electrode area, wherein the second metal trace is used to connect a metal mesh in one of the touch electrode areas in which the second metal trace is located to one end of the first metal trace,
the other end of the first metal trace is connected to the pad, and
the second metal trace is used to adjust a trace resistance between the at least one touch unit and the pad.

12 . The touch display apparatus according to claim 11 , wherein
a plurality of pixel areas arranged in an array and a light-shielding area between adjacent pixel areas are disposed at the display layer, and orthographic projections of the first metal mesh, the second metal mesh, and the second metal trace onto the display layer fall within the light-shielding areas.

13 . The touch display apparatus according to claim 11 , wherein
the first metal mesh comprises a plurality of third metal traces, and the second metal mesh comprises a plurality of fourth metal traces.

14 . The touch display apparatus according to claim 11 , wherein a trace width of the first metal trace, a trace width of the second metal trace, and a trace width of the third metal trace are the same.

15 . The touch display apparatus according to claim 11 , wherein
the touch layer group is formed by stacking a first metal layer, an insulation layer, and a second metal layer in a thickness direction of the touch display panel, the insulation layer is disposed between the first metal layer and the second metal layer, and the at least one touch unit is disposed on at least one of the first metal layer or the second metal layer.

16 . An electronic device, wherein the electronic device comprises:
a controller; and a touch display apparatus, comprising:
a touch control module; and
a touch display panel, comprising:
a display layer,
an encapsulation layer, and
a touch layer group, comprising:
a plurality of touch units arranged in an array;
a first metal trace; and
a pad, wherein

the touch layer group is sequentially disposed in a stacked manner and located on a side of the encapsulation layer that is away from the display layer,
at least one touch unit comprises a first touch electrode area and a second touch electrode area,
a first me

Assignees

• Huawei Tech Co Ltd

Inventors

• Zhang Gaofan
• Zhang Junyong

Classifications

• G06F2203/04112

  Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material · 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

• G06F2203/04107

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

• H10K59/40

  OLEDs integrated with touch screens · CPC title

• G06F3/0446 Primary

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