Touch panel and touch display device allowing relatively uniform distribution of contact vias across touch electrode blocks

Patent metadata

Field	Value
Publication number	US-10936139-B2
Application number	US-201916435082-A
Country	US
Kind code	B2
Filing date	Jun 7, 2019
Priority date	Aug 24, 2018
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

A touch panel including a substrate, an insulating layer, touch electrode blocks, and electrode lines. The touch electrode blocks include an array of first type touch electrode blocks having a regular shape and a second type touch electrode block having an irregular shape. Ones of the first type touch electrode blocks are electrically connected to respective ones of the electrode lines by respective X first contact vias extending through the insulating layer, and the respective X first contact vias are arranged along a straight line in a column direction. The second type touch electrode block is electrically connected to a first corresponding one of the electrode lines by Y second contact vias extending through the insulating layer, and the Y second contact vias are arranged along at least one straight line in the column direction. X and Y are natural numbers, and 0.75×X≤Y≤1.25×X.

First claim

What is claimed is:

1. A touch panel, comprising:
a substrate;
an insulating layer on the substrate;
a plurality of touch electrode blocks on a first side of the insulating layer, the plurality of touch electrode blocks comprising multiple first type touch electrode blocks having a regular shape and a second type touch electrode block having an irregular shape; and
a plurality of electrode lines on a second side of the insulating layer, the second side being opposite to the first side in a thickness direction of the insulating layer,
wherein the plurality of touch electrode blocks are on a touch area of the touch panel, and the touch area comprises a rectangular shape with a rounded corner,
wherein the multiple first type touch electrode blocks comprise a M*N array of first type touch electrode blocks, M and N are integers, and M≥2, N≥2, the second type touch electrode block is at the rounded corner, and the irregular shape is adapted to the rounded corner such that a portion of an outline of the second type touch electrode block is conformal to at least a portion of an outline of the rounded corner,
wherein the plurality of electrode lines extend in a column direction of the M*N array and spaced apart from each other,
wherein ones of the first type touch electrode blocks are electrically connected to respective ones of the plurality of electrode lines by respective X first contact vias extending through the insulating layer, and the respective X first contact vias are arranged in a straight line in the column direction,
wherein the second type touch electrode block is electrically connected to a first corresponding one of the plurality of electrode lines by Y second contact vias extending through the insulating layer, and the Y second contact vias are arranged along at least one straight line in the column direction, and
wherein X and Y are natural numbers, and 0.75×X≤Y≤1.25×X,
wherein the touch area comprises a first edge extending in the column direction and a second edge extending in a row direction of the array, the first edge and the second edge adjoin the rounded corner, wherein the touch area further comprises a third edge adjoining the second edge and defining a notch of the touch area,
wherein the plurality of touch electrode blocks further comprise a third type touch electrode block having an irregular shape adapted to the notch such that a portion of an outline of the third type touch electrode block is conformal to a portion of an outline of the notch,
wherein the multiple first type touch electrode blocks further comprise an additional first type touch electrode block between the second type touch electrode block and the third type touch electrode block, wherein the second type touch electrode block, the additional first type touch electrode block and the third type touch electrode block are arranged along the row direction of the array, wherein each of the second type touch electrode block, the additional first type touch electrode block and the third type touch electrode block is shifted with respect to each column of first type touch electrode blocks of the array of first type touch electrode blocks in the column direction of the array, wherein the first type touch electrode block, the second type touch electrode block and the third type touch electrode block have a substantially same area.

2. The touch panel of claim 1 ,
wherein a side of the second type touch electrode block close to the first edge is aligned with a first column of first type touch electrode blocks of the array of first type touch electrode blocks.

3. The touch panel of claim 2 ,
wherein the first corresponding one of the plurality of electrode lines comprises a body segment extending in the column direction, at least one extending segment spaced apart from and parallel to the body segment, and a connecting segment connecting the body segment and the at least one extending segment,
wherein the body segment is closer, in the row direction, to the first edge than respective ones of the plurality of electrode lines that are electrically connected to the first column of first type touch electrode blocks,
wherein the at least one extending segment is between the respective ones of the plurality of electrode lines, and
wherein at least a portion of the Y second contact vias are arranged along the at least one extending segment.

4. The touch panel of claim 3 , wherein the connecting segment is at least partially outside the touch area.

5. The touch panel of claim 2 ,
wherein the third type touch electrode block is on a same side as the second type touch electrode block with respect to the notch, and
wherein the third type touch electrode block is electrically connected to a second corresponding one of the plurality of electrode lines by Y third contact vias extending through the insulating layer, and the Y third contact vias are arranged in a straight line in the column direction.

6. The touch panel of claim 5 ,
wherein the third type touch electrode block spans at least two columns of the first type touch electrode blocks in the row direction.

7. The touch panel of claim 6 , wherein the second corresponding one of the plurality of electrode lines is closer to the first edge than respective ones of the plurality of electrode lines that are electrically connected to the at least two columns of first type touch electrode blocks.

8. The touch panel of claim 1 ,
wherein the second type touch electrode block spans at least two columns of first type touch electrode blocks in the row direction of the array.

9. The touch panel of claim 8 ,
wherein the first corresponding one of the plurality of electrode lines comprises a body segment extending in the column direction, at least one extending segment spaced apart from and parallel to the body segment, and a connecting segment connecting the body segment and the at least one extending segment,
wherein the body segment is closer, in the row direction, to the first edge than respective ones of the plurality of electrode lines that are electrically connected to the at least two columns of first type touch electrode blocks,
wherein the at least one extending segment is between the respective ones of the plurality of electrode lines, and
wherein at least a portion of the Y second contact vias are arranged along the at least one extending segment.

10. The touch panel of claim 9 , wherein the connecting segment is at least partially outside the touch area.

11. The touch panel of claim 8 ,
wherein the first corresponding one of the plurality of electrode lines extends along one straight line in the column direction, such that the Y second contact vias are arranged along the one straight line in the column direction, and
wherein the first corresponding one of the plurality of electrode lines is between respective ones of the plurality of electrode lines that are electrically connected to the at least two columns of first type touch electrode blocks.

12. The touch panel of claim 8 ,
wherein the third type touch electrode block is on a same side as the second type touch electrode block with respect to the notch, and
wherein the third type touch electrode block is electrically connected to a second corresponding one of the plurality of electrode lines by Y third contact vias extending through the insulating layer, and the Y third contact vias are arranged along a straight line in the column direction.

13. The touch panel of claim 12 ,
wherein the third type touch electrode block spans at least two columns of first type touch electrode blocks in the row direction.

14. The touch panel of cla

Assignees

• Ordos Yuansheng Optoelectronics Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Wang Zhen
• Zhan Xiaozhou
• Cong Lele
• Qiao Yun
• Sun Jian
• Zhang Han
• Qin Wenwen
• Wang Zhengkui

Classifications

• 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

• G06F3/041 Primary

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

• G06F3/047 Primary

  using sets of wires, e.g. crossed wires · CPC title

• G06F3/0443 Primary

  using a single layer of sensing electrodes · CPC title