Touch substrate and touch display device

Patent metadata

Field	Value
Publication number	US-12554367-B2
Application number	US-202418944735-A
Country	US
Kind code	B2
Filing date	Nov 12, 2024
Priority date	Oct 29, 2019
Publication date	Feb 17, 2026
Grant date	Feb 17, 2026

Abstract

A touch substrate and a touch display device are provided. The touch substrate includes a touch region and a notch region, the touch substrate further includes a plurality of touch-driving connection lines connected to a plurality of first touch electrodes, the plurality of second touch electrodes includes at least one second disconnection touch electrode, each of the at least one second disconnection touch electrode includes a first sub portion and a second sub portion, the touch substrate further includes a bridge line and a shielding line, the bridge line connects the first sub portion and the second sub portion, an orthographic projection of at least a part of the shielding line on the base substrate is between an orthographic projection of the bridge line on the base substrate and an orthographic projection of the touch-driving connection line on the base substrate.

First claim

What is claimed is:

1 . A touch substrate, comprising:
a base substrate; a plurality of first touch electrodes arranged along a first direction on the base substrate; and a plurality of second touch electrodes arranged along a second direction on the base substrate, wherein the touch substrate comprises a touch region and a notch region at an edge portion of the touch region in the second direction, the touch substrate further comprises a plurality of touch-driving connection lines connected to the plurality of first touch electrodes, and the plurality of second touch electrodes comprise a plurality of second disconnection touch electrode disconnected at the notch region, each of the at least one second disconnection touch electrode comprises a first sub portion and a second sub portion respectively on two sides of the notch region in the first direction, the touch substrate further comprises a bridge line, the bridge line connects the first sub portion with the second sub portion, and the touch substrate further comprises a shielding line, and an orthographic projection of at least a part of the shielding line on the base substrate is between an orthographic projection of the bridge line on the base substrate and an orthographic projection of the touch-driving connection line on the base substrate, is spaced apart from the orthographic projection of the bridge line on the base substrate and the orthographic projection of the touch-driving connection line on the base substrate, respectively, the bridge line comprises a bridge main portion and a first portion, a second portion and a first connection portion located at each of two ends of the bridge main portion; an extending direction of the first connection portion intersects with an extending direction of the first portion or the second portion, two ends of the first connection portion are respectively connected with the first portion and the second portion, and the second portion and the bridge main portion belong to one continuous wire.

2 . The touch substrate according to claim 1 , wherein at least one touch-driving connection line extends along the edge of the notch region close to the touch region.

3 . The touch substrate according to claim 1 , wherein the first portion is directly connected with the first sub portion or the second sub portion.

4 . The touch substrate according to claim 1 , wherein a length of the first portion is larger than a length of the second portion.

5 . The touch substrate according to claim 1 , wherein two first portions and two first connection portions located at two ends of the bridge line are axially symmetric with respect to a perpendicular bisector of the bridge line, respectively.

6 . The touch substrate according to claim 1 , wherein the bridge main portion comprises two portions respectively in a first conductive layer and a second conductive layer and electrically connected with each other.

7 . The touch substrate according to claim 6 , wherein the shielding line comprises a shielding main portion and a third bent portion and a fourth bent portion located at each of two ends of the shielding main portion, the shielding main portion, the third bent portion and the fourth bent portion extend along the edge of the notch region close to the touch region, the fourth bent portion and the shielding main portion belong to a continuous wire;
the third bent portion is substantially parallel to the first portion, and located between the first portion and the touch-driving connection line, the fourth bent portion is substantially parallel to the second portion, and located between the second portion and the touch-driving connection line.

8 . The touch substrate according to claim 7 , wherein the shielding line further comprises a second connection portion, an extending direction of the second connection portion intersects with an extending direction of the third bent portion and the fourth bent portion; two ends of the second connection portion are respectively connected with the third bent portion and the fourth bent portion; the first connection portion is substantially parallel to the second connection portion, and located between the second connection portion and the touch-driving connection line.

9 . The touch substrate according to claim 7 , wherein at least part of an orthographic projection of the touch-driving connection line on the base substrate is between an orthographic projection of the third bent portion on the base substrate and an orthographic projection of the fourth bent portion on the base substrate, and overlaps with orthographic projections of the first connection portion and the second connection portion on the base substrate.

10 . The touch substrate according to claim 9 , wherein the touch-driving connection line comprises a first sub touch-driving connection line on a side of the second connection portion away from the first connection portion and a second sub touch-driving connection line on a side of the first connection portion away from the second connection portion, and
the touch substrate further comprises a bridge portion connecting the first sub touch-driving connection line with the second sub touch-driving connection line.

11 . The touch substrate according to claim 10 , wherein the shielding line further comprises:
a first extension portion and a second extension portion located on a side of the first connection portion away from the second connection portion, the first extension portion is between the first connection portion and the second sub touch-driving connection line, and the second extension portion is substantially parallel to the second sub touch-driving connection line, and located on a side of the second sub touch-driving connection line away from the touch region.

12 . The touch substrate according to claim 10 , wherein the bridge portion comprises:
a third connection portion, in a different layer from the first connection portion, the first sub touch-driving connection line and the second sub touch-driving connection line; a first through-hole connection portion, connecting the third connection portion with the first sub touch-driving connection line; and a second through-hole connection portion, connecting the third connection portion with the second sub touch-driving connection line, wherein the third connection portion is in the first conductive layer, the first sub touch-driving connection line and the second sub touch-driving connection line are in the second conductive layer, an insulating layer is provided between the first conductive layer and the second conductive layer, and the first through-hole connection portion and the second through-hole connection portion are in the insulating layer, an orthographic projection of the third connection portion on the base substrate overlaps with an orthographic projection of the first sub touch-driving connection line on the base substrate and an orthographic projection of the second sub touch-driving connection line on the base substrate, respectively.

13 . The touch substrate according to claim 12 , wherein the shielding line further comprises:
a fourth connection portion, in a same layer as the third connection portion; a third through-hole connection portion, connecting the fourth connection portion with the fourth bent portion; and a fourth through-hole connection portion, connecting the fourth connection portion with the second extension portion, wherein the fourth connection portion is in the first conductive layer, the third bent portion, the second connection portion, the fourth bent portion, the first extension and the second exten

Assignees

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

Inventors

• Yan Jun
• Dong Xiangdan
• Wang Lingran
• Cheng Bo
• He Fan
• Du Mengmeng

Classifications

• H10K59/40

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• 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

  Digitisers structurally integrated in a display · CPC title

• G06F3/04164

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