Touch panel and display device

Patent metadata

Field	Value
Publication number	US-9703437-B2
Application number	US-201514786498-A
Country	US
Kind code	B2
Filing date	May 18, 2015
Priority date	Dec 5, 2014
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

The present disclosure provides a touch panel and a display device. The touch panel includes a glass substrate and a conductive film arranged on the glass substrate. The conductive film includes a base material and a conductive layer arranged on the base material. The conductive layer includes first conductive patterns and second conductive patterns, each of which includes a plurality of meshes formed by conductive wires crossing each other. The first conductive patterns are each of an X-shaped structure and arranged in an array form, and the second conductive patterns are each formed at a region surrounding by the adjacent first conductive patterns, arranged adjacent to and insulated from the first conductive pattern, and arranged in an array form.

First claim

What is claimed is:

1. A touch panel, comprising a glass substrate and a conductive film arranged on the glass substrate, the conductive film comprising a base material and a conductive layer arranged on the base material, wherein
the conductive layer comprises first conductive patterns and second conductive patterns, each of which comprises a plurality of meshes formed by conductive wires crossing each other;
the first conductive patterns are each of an X-shaped structure and arranged in an array form, and the second conductive patterns are each formed at a region surrounding by the adjacent first conductive patterns, arranged adjacent to and insulated from the first conductive pattern, and arranged in an array-form,
the first conductive pattern comprises a first conductive segment and a second conductive segment extending in opposite directions, and a third conductive segment and a fourth conductive segment extending in opposite directions, the first conductive segment, the second conductive segment, the third conductive segment and the fourth conductive segment are connected to each other, and the first conductive segment and the second conductive segment are perpendicular to the third conductive segment and the fourth conductive segment, respectively,
a total length of the first conductive segment and the second conductive segment is of a first value, and a total length of the third conductive segment and the fourth conductive segment is of a second value equal to the first value, the first value and the second value are greater than or equal to 3 mm, and less than or equal to 7 mm, the third conductive segments are each of a size and a structure identical to the fourth conductive segments,
each of the third conductive segments and the fourth conductive segments comprises a first top end segment, the first top end segment comprises a first perpendicular segment perpendicular to an extension direction of the third conductive segment and the fourth conductive segment and a first sharp end segment inclined at an angle of greater than 90° and less than 180° relative to the first perpendicular segment,
a length of the first perpendicular segment is B, a perpendicular distance from the first perpendicular segment to each of the first conductive segment and the second conductive segment is C and a length of the first sharp end segment is D,
the first conductive segments are each of a size and a structure identical to the second conductive segments,
each of the first conductive segments and the second conductive segments comprises a second top end segment, the second top end segment includes a second perpendicular segment perpendicular to an extension direction of the first conductive segment and the second conductive segment and a second sharp end segment inclined at an angle of greater than 90° and less than 180° relative to the second perpendicular segment, and
a perpendicular distance from the second perpendicular segment to each of the third conductive segment and the fourth conductive segment is A.

2. The touch panel according to claim 1 , wherein the second conductive patterns are each of an X-shaped structure.

3. The touch panel according to claim 2 , wherein each top end surface of the X-shaped structure of each of the first conductive patterns and the second conductive patterns is provided with a protruded sharp end.

4. The touch panel according to claim 3 , wherein four sharp ends of each first conductive pattern correspond to four angles of a first diamond pattern, and four sharp ends of each second conductive pattern correspond to four angles of a second diamond pattern.

5. The touch panel according to claim 1 , wherein the adjacent first conductive patterns are connected to each other, and the adjacent second conductive patterns are connected to each other.

6. The touch panel according to claim 1 , wherein the first conductive segments and the second conductive segments of the first conductive patterns are arranged in rows, and the third conductive segments and the fourth conductive segments of the first conductive patterns are arranged in columns.

7. The touch panel according to claim 1 , wherein the first conductive segment, the second conductive segment, the third conductive segment and the fourth conductive segment are of an identical length.

8. The touch panel according to claim 1 , wherein each second conductive pattern comprises a first conductive segment and a second conductive segment extending in opposite directions, and a third conductive segment and a fourth conductive segment extending in opposite directions, the first conductive segment, the second conductive segment, the third conductive segment and the fourth conductive segment are connected to each other, and the first conductive segment and the second conductive segment are perpendicular to the third conductive segment and the fourth conductive segment, respectively.

9. The touch panel according to claim 8 , wherein the first conductive segments and the second conductive segments of the second conductive patterns are arranged in rows, and the third conductive segments and the fourth conductive segments of the second conductive patterns are arranged in columns.

10. The touch panel according to claim 8 , wherein a total length of the first conductive segment and the second conductive segment is of a third value, and a total length of the third conductive segment and the fourth conductive segment is of a fourth value equal to the third value.

11. The touch panel according to claim 8 , wherein the first conductive segment, the second conductive segment, the third conductive segment and the fourth conductive segment are of an identical length.

12. The touch panel according to claim 1 , wherein
D is of a value of 0.5 mm,
C is a sum of a value of A and a value of B, and
when the first value and the second value are each greater than or equal to 3 mm and less than or equal to 4 mm, A is greater than 0 and less than or equal to 2 mm and B is greater than 0 and less than or equal to 2 mm,
when the first value and the second value are each greater than 4 mm and less than or equal to 5 mm, A is greater than 0 and less than or equal to 2.5 mm and B is greater than 0 and less than or equal to 2.5 mm,
when the first value and the second value are each greater than 5 mm and less than or equal to 6 mm, A is greater than 0 and less than or equal to 3 mm and B is greater than 0 and less than or equal to 3 mm, and
when the first value and the second value are each greater than 6 mm and less than or equal to 7 mm, A is greater than 0 and less than or equal to 3.5 mm and B is greater than 0 and less than or equal to 3.5 mm.

13. The touch panel according to claim 1 , wherein the first conductive patterns and the second conductive patterns each comprise hexagonal meshes formed by conductive wires crossing each other.

14. The touch panel according to claim 1 , wherein the conductive wire of each of the first conductive patterns and the second conductive patterns is of a diameter of 0.003 mm to 0.01 mm.

15. A display device comprising a display substrate and the touch panel according to claim 1 .

16. The display device according to claim 15 , wherein each first conductive pattern is of an X-shaped structure, two portions of the X-shaped structure crossing each other extend in directions identical to arrangement directions of a data line and a gate line on the display substrate.

Assignees

• Boe Technology Group Co Ltd
• Hefei Xinsheng Optoelectronics Technology Co Ltd

Inventors

• Zhang Lei
• Hu Ming
• Zhang Ming
• Xie Taofeng
• Wu Lingyan
• Liu Yang
• Fang Zhixiang

Classifications

• G06F3/044 Primary

  by capacitive means · 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

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/0448

  Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality · 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