Touch component for avoiding ghosting, manufacturing method thereof and touch screen including the same

• US 10,642,429 B2
• Filed: 08/08/2018
• Issued: 05/05/2020
• Est. Priority Date: 11/14/2017
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectric Technology Co. Ltd. (BOE Technology Group Co., Ltd.)
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: Xu, Jiawei, Chen, Qicheng, Li, Jun, Zhang, Lei, Kuo, Tsung Chieh
• Primary Examiner(s): Blancha, Jonathan M
• Application Number:
  US16/058,895
• Publication Number:
  US 20190146605A1
• Time in Patent Office: 636 Days
• Field of Search: 345174
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04112 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 Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

The present disclosure provides a touch component, a method for manufacturing the touch component and a touch screen. The touch component includes a first metal mesh layer and a second metal mesh layer which are opposite to each other, the first metal mesh layer including a plurality of first touch channel areas, the first virtual wiring area including a plurality of first virtual wiring openings, the second metal mesh layer including a plurality of second touch channel areas and a plurality of second virtual wiring areas, the second virtual wiring area including a plurality of second virtual wiring openings. A projection of at least part of the first virtual wiring opening on the second metal mesh layer intersects with a grid line of the second metal mesh layer.

Claims

1. A touch component, comprising:

a first metal mesh layer comprising a plurality of first touch channel areas extending in parallel in a first direction and a plurality of first virtual wiring areas between adjacent first touch channel areas of the first touch channel areas, wherein the plurality of first virtual wiring areas comprises a plurality of first virtual wiring openings for separating the adjacent first touch channel areas;

a second metal mesh layer opposite to the first metal mesh layer, comprising a plurality of second touch channel areas extending in parallel in a second direction and a plurality of second virtual wiring areas between adjacent second touch channel areas of the second touch channel areas, wherein the first direction intersects the second direction, and the plurality of second virtual wiring areas comprises a plurality of second virtual wiring openings for separating the adjacent second touch channel areas,

wherein each of the plurality of first virtual wiring opening is formed to cut off a first grid line of the first metal mesh layer, and extends in a direction along which the first grid line, which is cut off, extends,

wherein each of the plurality of second virtual wiring opening is formed to cut off a second grid line of the second metal mesh later, and extends in a direction along which the second grid line, which is cut off, extends,

wherein the plurality of first virtual wiring openings and the plurality of second virtual wiring openings are configured to have at least one of an arrangement in which;

a projection of at least part of the plurality of first virtual wiring openings on the second metal mesh layer intersects with the second grid line of the second metal mesh layer, and the projection of the first virtual wiring opening on the second metal mesh later and the second grid line of the second metal mesh later, which are intersected, extend in different directions, and

a projection of at least part of the plurality of second virtual wiring openings on the first metal mesh layer intersects with the first grid line of the first metal mesh layer, and the projection of the second virtual wiring opening on the first metal mesh layer and the first grid line of the first metal mesh layer intersected and extend in different directions.

2. The touch component according to claim 1, wherein

the plurality of first virtual wiring areas comprises a plurality of first virtual wirings;

and

the plurality of first virtual wiring openings is formed between the plurality of the first virtual wirings and the plurality of the first touch channel areas, and between the first virtual wirings.

3. The touch component according to claim 2, wherein the plurality of first virtual wirings has an X-shaped structure.

4. The touch component according to claim 3, wherein an intersection of the X-shaped structure of the plurality of first virtual wirings is aligned with a centroid of a grid of the second metal mesh layer.

5. The touch component according to claim 1, wherein

the plurality of second virtual wiring areas comprises a plurality of second virtual wirings;

and

the plurality of second virtual wiring openings is formed between the plurality of the second virtual wirings and the plurality of the second touch channel areas, and between the second virtual wirings.

6. The touch component according to claim 5, wherein the plurality of second virtual wirings has an X-shaped structure.

7. The touch component according to claim 6, wherein an intersection of the X-shaped structure of the plurality of second virtual wirings is aligned with a centroid of a grid of the first metal mesh layer.

8. The touch component according to claim 1, wherein a projection of at least part of the plurality of first virtual wiring openings on the second metal mesh layer is within a grid of the second metal mesh layer.

9. The touch component according to claim 8, wherein a projection of at least part of the plurality of second virtual wiring openings on the first metal mesh layer is within a grid of the first metal mesh layer.

10. The touch component according to claim 1, wherein a projection of at least part of the plurality of second virtual wiring openings on the first metal mesh layer is within a grid of the first metal mesh layer.

11. The touch component according to claim 1, wherein a grid of the first metal mesh layer is a diamond metal grid.

12. The touch component according to claim 1, wherein a grid of the second metal mesh layer is a diamond metal grid.

13. The touch component according to claim 1, wherein a grid of the first metal mesh layer and the metal grid of the second metal mesh layer have the same size.

14. The touch component according to claim 1, wherein a metal grid is formed of one or more of copper, aluminum and silver.

15. A method for manufacturing a touch component, comprising:

forming a first metal mesh layer on a substrate, wherein the first metal mesh layer comprises a plurality of first touch channel areas extending in parallel in a first direction and a plurality of first virtual wiring areas between adjacent first touch channel areas of the first touch channel areas, and the plurality of first virtual wiring areas comprises a plurality of first virtual wiring openings for separating the adjacent first touch channel areas;

forming a first insulating layer on the first metal mesh layer;

forming a second metal mesh layer on the first insulating layer, wherein the second metal mesh layer is opposite to the first metal mesh layer and comprises a plurality of second touch channel areas extending in parallel in a second direction and a plurality of second virtual wiring areas between adjacent second touch channel areas of the second touch channel areas, the first direction intersects the second direction, and the plurality of second virtual wiring areas comprises a plurality of second virtual wiring openings for separating the adjacent second touch channel areas; and

forming a second insulating layer on the second metal mesh layer,

wherein each of the plurality of first virtual wiring opening is formed to cut off a first grid line of the first metal mesh layer, and extends in a direction along which the first grid line, which is cut off, extends,

wherein each of the plurality of second virtual wiring opening is formed to cut off a second grid line of the second metal mesh layer, and extends in a direction along which the second grid line, which is cut off, extends,

wherein the plurality of first virtual wiring openings and the plurality of second virtual wiring openings are configured to be at least one of an arrangement in which;

a projection of at least part of the plurality of first virtual wiring opening on the second metal mesh layer intersects with the second grid line of the second metal mesh layer, and the projection of the first virtual wiring opening on the second metal mesh layer and the second grid line of the second metal mesh layer, which are intersected, extend in different directions, and

a projection of at least part of the plurality of second virtual wiring opening on the first metal mesh layer intersects with the first grid line of the first metal mesh layer and the projection of the second virtual wiring opening on the first metal mesh layer and the first grid line of the first metal mesh layer intersect and extend in different directions.

16. A touch screen, comprising:

a touch component, wherein the touch component comprises;

a first metal mesh layer comprising a plurality of first touch channel areas extending in parallel in a first direction and a plurality of first virtual wiring areas between adjacent ones of the first touch channel areas, wherein the first virtual wiring area comprises a plurality of first virtual wiring openings for separating adjacent first touch channel areas;

a second metal mesh layer opposite to the first metal mesh layer, comprising a plurality of second touch channel areas extending in parallel in a second direction and a plurality of second virtual wiring areas between adjacent ones of the second touch channel areas, wherein the first direction intersects the second direction, and the second virtual wiring area comprises a plurality of second virtual wiring openings for separating the adjacent second touch channel areas,

wherein each of the plurality of first virtual wiring opening is formed to cut off a first grid line of the first metal mesh layer, and extends in a direction along which the first grid line, which is cut off, extends,

wherein each of the plurality of second virtual wiring opening is formed to cut off a second grid line of the second metal mesh layer, and extends in a direction along which the second grid line, which is cut off, extends,

wherein the first virtual wiring opening and the second virtual wiring opening are configured to have at least one of an arrangement in which;

a projection of at least part of the first virtual wiring opening on the second metal mesh layer intersects with the second grid line of the second metal mesh layer, and the projection of the first virtual wiring opening on the second metal mesh layer and the second grid line of the second metal mesh layer, which are intersected, extend in different directions, and

a projection of at least part of the second virtual wiring opening on the first metal mesh layer intersects with the first grid line of the first metal mesh layer and the projection of the second virtual wiring opening on the first metal mesh layer and the first said line of the first metal mesh layer intersect and extend in different directions.