Touch display panel

Patent metadata

Field	Value
Publication number	US-2025181196-A1
Application number	US-202217792439-A
Country	US
Kind code	A1
Filing date	Jun 30, 2022
Priority date	Jun 8, 2022
Publication date	Jun 5, 2025
Grant date	—

Abstract

A touch display panel includes a touch area and a bezel area. The touch display panel includes a substrate and a touch layer. The touch layer includes a plurality of touch electrodes and a plurality of touch lines. The touch lines include winding sections and main line sections. The touch lines include a first touch line and a second touch line, a width variation between the first touch line and the second touch line in the bezel area is less than or equal to a first preset threshold, and a length of a winding section of the first touch line is less than a length of a winding section of the second touch line.

First claim

What is claimed is:

1 . A touch display panel, having a touch area and a bezel area located on at least one side of the touch area and comprising:
a substrate; and a touch layer disposed on one side of the substrate, wherein the touch layer comprises a plurality of touch electrodes disposed along a first direction and a second direction in the touch area and a plurality of touch lines at least partially disposed in the bezel area, the touch lines and the touch electrodes are correspondingly connected to each other, and the first direction intersects the second direction; wherein the touch lines comprise winding sections and main line sections connected to each other, one of the winding sections and one of the main line sections are connected to each other by a connection point, and the connection point is an outermost intersection between the touch lines and an extending line of the touch electrodes connected to the touch lines in the second direction; and the touch electrodes comprise a first touch electrode and a second touch electrode arranged in the first direction, the touch lines comprise a first touch line and a second touch line, the first touch electrode is electrically connected to the first touch line, the second touch electrode is electrically connected to the second touch line, a width variation between the first touch line and the second touch line in the bezel area is less than or equal to a first preset threshold, and a length of a winding section of the first touch line is less than a length of a winding section of the second touch line.

2 . The touch display panel according to claim 1 , wherein a length of a main line section of the first touch line is greater than a length of a main line section of the second touch line.

3 . The touch display panel according to claim 2 , wherein the first touch line and the second touch line have a same length.

4 . The touch display panel according to claim 1 , wherein the first preset threshold is 20%.

5 . The touch display panel according to claim 4 , wherein the first touch line and the second touch line have a same width in the bezel area.

6 . The touch display panel according to claim 1 , wherein the touch layer comprises first touch electrode groups and second touch electrode groups extending along the second direction, and the first touch electrode groups and the second touch electrode groups are arranged along the first direction;
the first touch electrode groups comprise a plurality of the touch electrodes arranged and connected along the second direction, one first touch electrode group is connected to the first touch line, and the first touch electrode groups comprise the first touch electrode; and the second touch electrode groups comprise another plurality of the touch electrodes arranged and connected along the second direction, one second touch electrode group is connected to the second touch line, and the second touch electrode groups comprise the second touch electrode.

7 . The touch display panel according to claim 6 , wherein the touch layer further comprises third touch electrode groups extending along the first direction, the third touch electrode groups comprise a plurality of the touch electrodes arranged and connected along the first direction, and each third touch electrode group is connected to one third touch line.

8 . The touch display panel according to claim 6 , wherein the main line sections comprise a first main line section, and the winding sections comprise a first winding section; and
the first winding section comprises at least three first line segments, at least one second line segment, and at least one third line segment, the at least three first line segments are spaced apart from each other along the first direction and extend along the second direction, the at least one second line segment connects a k-th first line segment to a (k+1)th first line segment, and the at least one third line segment connects the (k+1)th first line segment to a (k+2)th first line segment, wherein k is an integer greater than 0; and the (k+2)th first line segment is connected to the first main line section.

9 . The touch display panel according to claim 8 , wherein the main line sections further comprise a second main line section, and the winding sections further comprise a second winding section; and
the second winding section comprises at least three fourth line segments, at least one fifth line segment, and at least one sixth line segment, the at least one fifth line segment and the at least one sixth line segment extend in the first direction, the at least one fifth line segment connects an m-th fourth line segment to an (m+1)th fourth line segment, and the at least one sixth line segment connects the (m+1)th fourth line segment to an (m+2)th fourth line segment, wherein m is an integer greater than 0, and the (m+2)th fourth line segment is connected to the second main line section.

10 . The touch display panel according to claim 9 , wherein the main line sections further comprise a third main line section, and the winding sections further comprise a third winding section; and
the third winding section comprises at least two seventh line segments and at least one eighth line segment, the at least two seventh line segments are arranged in the first direction, and the at least one eighth line segment extends along the first direction and connects an n-th seventh line segment to an (n+1)th seventh line segment, wherein, n is an integer greater than 0, and the (n+1)th seventh line segment is connected to the third main line section.

11 . The touch display panel according to claim 10 , wherein the at least three first line segments are arranged side by side, the at least one fifth line segment and the at least one sixth line segment are arranged side by side, and the at least two seventh line segments are staggered from each other.

12 . The touch display panel according to claim 10 , wherein the main line sections further comprise a fourth main line section, and the winding sections further comprise a fourth winding section; and
the fourth winding section comprises at least three ninth line segments, at least one tenth line segment, at least one eleventh line segment, a connecting line segment, at least two twelfth line segments, and at least one thirteenth line segment; the at least three ninth line segments are arranged along the first direction, the at least one tenth line segment connects a g-th ninth line segment to a (g+1)th ninth line segment, the at least one eleventh line segment connects the (g+1)th ninth line segment to a (g+2)th ninth line segment, the at least two twelfth line segments are arranged along the first direction and extend along the second direction, and the at least one thirteenth line segment extends along the first direction, a first end of the connecting line segment is connected to the (g+2)th ninth line segment, a second end of the connecting line segment is connected to an a-th twelfth line segment, and the at least one thirteenth line segment connects the a-th twelfth line segment to an (a+1)th twelfth line segment; and wherein a is an integer greater than 0, the (a+1)th twelfth line segment is connected to the fourth main line section, and the connecting line segment is a continuous bending structure.

13 . The touch display panel according to claim 12 , wherein the touch area comprises a first touch area and a second touch area, and the first winding section is connected to the first touch electrode groups and/or the second touch electrode groups on one side of the first touch area away from the second touch area; the second winding

Assignees

• Wuhan China Star Optoelectronics Semiconductor Display Tech Co Ltd

Inventors

• He Ruiting
• Wu Shaojing
• Liu Jin

Classifications

• G06F3/041

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title

• G06F3/04164

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

• G06F3/0445

  using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer · CPC title