Touch-control structure, and display apparatus

Patent metadata

Field	Value
Publication number	US-2025258564-A1
Application number	US-202519196787-A
Country	US
Kind code	A1
Filing date	May 2, 2025
Priority date	Feb 28, 2023
Publication date	Aug 14, 2025
Grant date	—

Abstract

A touch-control structure includes: a plurality of first touch-control electrodes, a plurality of second touch-control electrodes, a plurality of first lead wires and a plurality of second lead wires; the first touch-control electrodes are insulated from the second touch-control electrodes; at least a part of the first lead wires includes main body portions and narrowing portions connected to each other along an extension path of the first lead wires, and a cross section of at least a part of the narrowing portions is smaller than a cross section of the main body portions; and the narrowing portions are all located in the edge region; a distance between each of the narrowing portions and the lead-out region in the second direction is increased or decreased along a direction away from the touch-control region.

First claim

What is claimed is:

1 . A touch-control structure, wherein the touch-control structure is provided with a touch-control region and a peripheral region outside the touch-control region, the peripheral region comprises an edge region surrounding the touch-control region and a lead-out region extending outward from a part of the edge region, and the lead-out region is provided with a binding portion;
the touch-control structure comprises touch-control electrodes located in the touch-control region and lead wires located in the peripheral region, and the touch-control electrodes are connected to the binding portion through the lead wires; the touch-control electrodes comprise a plurality of first touch-control electrodes and a plurality of second touch-control electrodes; the first touch-control electrodes extend along a first direction and are distributed at intervals along a second direction; the second touch-control electrodes extend along the second direction and are distributed at intervals along the first direction; the first direction is intersected with the second direction; the first touch-control electrodes are insulated from the second touch-control electrodes; the lead wires comprise a plurality of first lead wires and a plurality of second lead wires; the first touch-control electrodes are connected to the binding portion through the first lead wires, and the second touch-control electrodes are connected to the binding portion through the second lead wires; at least a part of the first lead wires comprises main body portions and narrowing portions connected to each other along an extension path of the first lead wires, and a cross section of at least a part of the narrowing portions is smaller than a cross section of the main body portions; and the narrowing portions are all located in the edge region; a distance between each of the narrowing portions and the lead-out region in the second direction is increased or decreased along a direction away from the touch-control region.

2 . The touch-control structure according to claim 1 , wherein the lead wires comprise a plurality of layers of wire bodies provided at intervals, and the wire bodies of a same lead wire overlap with each other; a part of the wire bodies of at least a part of the first lead wires is provided with a fracture;
wire bodies cut off by the fracture comprises a plurality of wire segments separated by the fracture, and the wire segments are all connected to adjacent wire bodies through contact holes, so as to connect the wire bodies cut off by the fracture to adjacent wire bodies in parallel; and a part of the first lead wires corresponding to the wire segments is the main body portions; and a part of the first lead wires between two contact holes connected to two ends of a same fracture is the narrowing portions.

3 . The touch-control structure according to claim 2 , wherein the touch-control structure further comprises dummy wire bodies, the dummy wire bodies are located within the fracture, and the dummy wire bodies are provided at a same layer as the wire bodies where the fracture is located, and are connected floatingly to the wire bodies where the fracture is located.

4 . The touch-control structure according to claim 2 , wherein a distance between a contact hole and a fracture closest to the contact hole is greater than a length of the fracture.

5 . The touch-control structure according to claim 2 , wherein a distance between a contact hole and a fracture closest to the contact hole is less than or equal to a length of the fracture.

6 . The touch-control structure according to claim 1 , wherein at least two first lead wires with different lengths are provided with narrowing portions; among two first lead wires with different lengths, a length of a narrowing portion of a first lead wire with a greater length is smaller than a length of a narrowing portion of the first lead wire with a smaller length.

7 . The touch-control structure according to claim 1 , wherein the narrowing portions are all located in the edge region, and a distance between each of the narrowing portions and the lead-out region in the second direction is equal to each other.

8 . The touch-control structure according to claim 1 , wherein the lead-out region and the touch-control region are distributed along the second direction; each of the first lead wires is connected to the first touch-control electrodes from a same side of the touch-control region, and is distributed at intervals along a direction away from the touch-control region;
each of the first lead wires is classified into a first type of lead wire, a second type of lead wire or a third type of lead wire distributed along the direction away from the touch-control region; a partial region of the first type of lead wire extends along the first direction between the touch-control region and the lead-out region; the narrowing portions are provided at the second type of lead wire; a length of the third type of lead wire is greater than a length of the second type of lead wire, and is greater than or equal to a length of the first type of lead wire.

9 . The touch-control structure according to claim 1 , wherein the lead-out region and the touch-control region are distributed along the second direction; each of the first lead wires is connected to the first touch-control electrodes from a same side of the touch-control region, and is distributed at intervals along a direction away from the touch-control region;
each of the first lead wires is classified into a first type of lead wire, a second type of lead wire or a third type of lead wire distributed in the direction away from the touch-control region; a partial region of the first type of lead wire extends along the first direction between the touch-control region and the lead-out region; the narrowing portions are provided at the first type of lead wire and the second type of lead wire; a length of the third type of lead wire is greater than a length of the second type of lead wire, and is greater than or equal to a length of the first type of lead wire.

10 . The touch-control structure according to claim 2 , wherein the lead-out region and the touch-control region are distributed along the second direction; each of the first lead wires is connected to the first touch-control electrodes from a same side of the touch-control region, and is distributed at intervals along a direction away from the touch-control region; the second lead wires are located between the touch-control region and the binding portion; and
at least one of the first lead wires is intersected with and insulated from at least one of the second lead wires.

11 . The touch-control structure according to claim 10 , wherein an outline of the touch-control region comprises four sides and rounded corners connecting two adjacent sides; the sides comprise a first side and a second side extending along the first direction, as well as a third side and a fourth side extending along the second direction; the first side and the second side are distributed along a direction away from the lead-out region; the third side and the fourth side are distributed along the first direction; a rounded corner connecting the first side and the third side is a first rounded corner;
in the direction away from the lead-out region, a first one of the first touch-control electrodes is a first target electrode, an edge of the first target electrode close to the lead-out region is located at the first side, and an edge of the first target electrode away from an end of the fourth side is located at the first rounded corner; a first lead wire connected to the first target electrode is a first target

Assignees

• Chengdu Boe Optoelect Tech Co
• Boe Technology Group Co Ltd

Inventors

• Wang Siyu
• Wang Wei
• Zeng Yang
• Dai Junxiu
• Chen Tianci
• Zhang Yi

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

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · 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