Touch panel

Patent metadata

Field	Value
Publication number	US-9075487-B2
Application number	US-201213610899-A
Country	US
Kind code	B2
Filing date	Sep 12, 2012
Priority date	May 9, 2012
Publication date	Jul 7, 2015
Grant date	Jul 7, 2015

Abstract

A touch panel includes a substrate, a touch sensing element, a plurality of transmission lines, a first frame structure, and a second frame structure is provided. The touch sensing element is disposed on the substrate to define an active region. The transmission lines are connected to the touch sensing element. The first frame structure is disposed on the substrate and surrounding the active region to define a first periphery region. The transmission lines are at least partially located on a top surface of the first frame structure. The second frame structure is disposed on the substrate and surrounding the first frame structure, wherein the second frame structure is disposed at an outer border of the first periphery region. A material of the first frame structure is different from a material of the second frame structure.

First claim

What is claimed is:

1. A touch panel, assembled with a display panel, the touch panel comprising:
a substrate;
a touch sensing element, disposed on the substrate to define an active region;
a plurality of transmission lines, connected to the touch sensing element;
a first frame structure, disposed on the substrate and surrounding the active region to define a first periphery region, and the transmission lines are at least partially located on a top surface of the first frame structure; and
a second frame structure, disposed on the substrate and surrounding the first frame structure, wherein the second frame structure is disposed at an outer border of the first periphery region, the second frame structure at least partially covers the first frame structure, a material of the first frame structure is different from a material of the second frame structure, and the first frame structure and the second frame structure are disposed between the substrate and the display panel.

2. The touch panel as recited in claim 1 , wherein a thickness of the second frame structure is greater than a thickness of the first frame structure.

3. The touch panel as recited in claim 1 , wherein the second frame structure is in contact with the top surface of the first frame structure.

4. The touch panel as recited in claim 1 , wherein the second frame structure completely covers the top surface of the first frame structure, and the transmission lines are located between the first frame structure and the second frame structure.

5. The touch panel as recited in claim 1 , wherein the first frame structure is substantially black, and the second frame structure is substantially colorful.

6. The touch panel as recited in claim 1 , wherein the material of the first frame structure substantially comprises a photoresist material and the first frame structure is manufactured through a photolithography process.

7. The touch panel as recited in claim 1 , wherein the material of the second frame structure substantially comprises an ink material and the second frame structure is manufactured through a printing process.

8. The touch panel recited in claim 1 , wherein a thickness of the first frame structure is substantially no more than 2 microns.

9. The touch panel as recited in claim 1 , wherein the touch sensing element comprises a plurality of first sensing series each extending along a first direction and a plurality of second sensing series each extending along a second direction, wherein the first direction intersects with the second direction, and the transmission lines respectively connect the corresponding first sensing series and the corresponding the second sensing series to a chip connection region at least located in the first periphery region.

10. The touch panel recited in claim 1 , wherein a material of the transmission lines comprises metal.

11. The touch panel as recited in claim 1 further comprising a protective layer disposed on the substrate, and the touch sensing element is located between the protective layer and the substrate.

12. The touch panel as recited in claim 1 , wherein the substrate is a cover glass covering on the display panel.

13. The touch panel as recited in claim 1 , wherein the first frame structure and the second frame structure are substantially non-conductive.

14. The touch panel as recited in claim 1 , wherein the second frame structure defines a second periphery region at the outer border of the first periphery region away from the active region.

15. The touch panel as recited in claim 1 , wherein the first frame structure is directly in contact with the substrate and at least part of the second frame structure is directly in contact with the substrate such that the first frame structure and the at least part of the second frame structure are on the same layer.

16. The touch panel as recited in claim 1 , wherein the transmission lines are disposed between the first frame structure and the display panel.

17. The touch panel as recited in claim 16 , wherein the material of the first frame structure substantially comprises a photoresist material and the material of the second frame structure substantially comprises an ink material.

18. The touch panel as recited in claim 11 , wherein the second frame structure and the protective layer completely cover the top surface of the first frame structure.

19. The touch panel as recited in claim 9 , wherein an insulating layer is disposed between the first sensing series and the second sensing series, and the first frame structure is separated from the insulating layer.

20. The touch panel as recited in claim 1 , wherein the substrate includes a first side and a second side, the first frame structure and the second frame structure are disposed on the second side, and the first side is used for receiving a touch.

Assignees

• Tang yu-ying
• Huang Yen-Heng
• Tseng Ho-Chieh
• Chou Shih-Po
• Au Optronics Corp

Inventors

• Tang yu-ying
• Huang Yen-Heng
• Tseng Ho-Chieh
• Chou Shih-Po

Classifications

• G06F3/044 Primary

  by capacitive means · 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

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• 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

• G06F3/0446 Primary

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title