Touch panel

Patent metadata

Field	Value
Publication number	US-2021232263-A1
Application number	US-201816301447-A
Country	US
Kind code	A1
Filing date	Sep 11, 2018
Priority date	Aug 6, 2018
Publication date	Jul 29, 2021
Grant date	—

Abstract

A touch panel includes a substrate and a touch layer disposed on the substrate. The touch layer includes at least two first touch electrodes arranged along a first direction, at least four second touch electrodes, where at least two of the second touch electrodes are arranged along the first direction or a second direction. The second touch electrodes are embedded in the first touch electrodes. The first touch electrodes are insulated from the second touch electrodes.

First claim

1 . A touch panel, comprising a substrate and a touch layer disposed on the substrate, wherein the touch layer comprises:
at least two first touch electrodes which are arranged along a first direction; and second touch electrodes arranged in an array, wherein at least two of the second touch electrodes are arranged along the first direction or a second direction; and wherein the second touch electrodes are embedded in the first touch electrodes; the first touch electrodes are insulated from the second touch electrodes; and at least two of the second touch electrodes arranged along the second direction are embedded in the same first touch electrode.

2 . The touch panel as claimed in claim 1 , wherein a first metal disconnection area is formed between the first touch electrode and the second touch electrode embedded in the first touch electrode.

3 . The touch panel as claimed in claim 2 , wherein the first touch electrode comprises at least two openings which are spaced apart from each other, and the second touch electrodes are located in the openings.

4 . The touch panel as claimed in claim 1 , wherein a second metal disconnection area is formed between each of the first touch electrodes and the adjacent first touch electrodes.

5 . The touch panel as claimed in claim 1 , further comprising a bridge connection layer, a first insulation layer, and a second insulation layer.

6 . The touch panel as claimed in claim 5 , wherein the first insulation layer is disposed on the touch layer, the bridge connection layer is disposed on the first insulation layer, and the second insulation layer is disposed on the bridge connection layer.

7 . The touch panel as claimed in claim 5 , wherein the bridge connection layer comprises conductive bridges arranged in an array, and each of the conductive bridges connects two adjacent second touch electrodes arranged along the first direction.

8 . The touch panel as claimed in claim 7 , wherein the first touch electrode, the second touch electrode, and the conductive bridge are mesh structures made from crisscrossed metal wires.

9 . The touch panel as claimed in claim 1 , further comprising a binding pad and a surrounding trace, wherein the surrounding trace connects the first touch electrodes, the second touch electrodes, and the binding pad, respectively.

10 . A touch panel, comprising a substrate and a touch layer disposed on the substrate, wherein the touch layer comprises:
at least two first touch electrodes which are arranged along a first direction; and second touch electrodes arranged in an array, wherein at least two of the second touch electrodes are arranged along the first direction or a second direction; and wherein the second touch electrodes are embedded in the first touch electrodes; and the first touch electrodes are insulated from the second touch electrodes.

11 . The touch panel as claimed in claim 10 , wherein a first metal disconnection area is formed between the first touch electrode and the second touch electrode embedded in the first touch electrode.

12 . The touch panel as claimed in claim 11 , wherein the first touch electrode comprises at least two openings which are spaced apart from each other, and the second touch electrodes are located in the openings.

13 . The touch panel as clamed in claim 10 , wherein a second metal disconnection area is formed between each of the first touch electrodes and the adjacent first touch electrodes.

14 . The touch panel as clamed in claim 10 , further comprising a bridge connection layer, a first insulation layer, and a second insulation layer.

15 . The touch panel as claimed in claim 14 , wherein the first insulation layer disposed on the touch layer, the bridge connection layer is disposed on the first insulation layer, and the second insulation layer is disposed on the bridge connection layer.

16 . The touch panel as claimed in claim 14 , wherein the bridge connection layer comprises conductive bridges arranged in an array, and each of the conductive bridges connects two adjacent second touch electrodes arranged along the first direction.

17 . The touch panel as claimed in claim 16 , wherein the first touch electrode, the second touch electrode, and the conductive bridge are mesh structures made from crisscrossed metal wires.

18 . The touch panel as claimed in claim 10 , further comprising binding pad and a surrounding trace, wherein the surrounding trace connects the first touch electrodes, the second touch electrodes, and the binding pad, respectively.

Assignees

• Wuhan China Star Optoelectronics Semiconductor Display Tech Co Ltd

Inventors

• Feng Xiaoliang

Classifications

• G06F3/0443

  using a single layer of sensing electrodes · 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

• G06F2203/04112

  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

• G06F3/0446 Primary

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

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title