CAPACITIVE TOUCH PANEL

• US 20140198078A1
• Filed: 03/17/2014
• Published: 07/17/2014
• Est. Priority Date: 12/24/2007
• Status: Active Grant

• Current Assignee: TPK Holding Co., Ltd.
• Original Assignee: Wintek Corporation
• Inventors: WU, JASON, HUNG, YEN- CHUNG, WENG, RUEY-SHING, LAI, CHIH-CHANG
• Granted Patent: US 9,395,857 B2
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• 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

Abstract

A transparent capacitive touch panel comprising a transparent substrate, a transparent cover lens and a transparent adhesive layer is provided, wherein a first transparent electrode layer and a second transparent electrode layer are disposed on the transparent cover lens and the transparent substrate respectively. The transparent adhesive layer is used to bind the first transparent electrode layer and second transparent electrode layer in order to combine the transparent cover lens and the transparent substrate disposed in parallel. Thereby, the manufacturing process of the transparent capacitive touch panel is simplified, and the manufacturing cost of the same is lowered.

Claims

1. A capacitive touch panel, comprising:

a cover lens;

a decoration layer disposed on a surface of the cover lens;

a color filter substrate disposed parallel to the cover lens;

an electrode layer disposed on a surface of the color filter substrate to perform touch-sensing operations, with the surface of the color filter substrate facing the cover lens; and

at least one adhesive layer for binding the cover lens and the color filter substrate.

2. The capacitive touch panel as recited in claim 1, wherein the adhesive layer is disposed between the cover lens and the electrode layer.

3. The capacitive touch panel as recited in claim 1, wherein the adhesive layer comprises a double-sided adhesive tape or a liquid-phase adhesive.

4. The capacitive touch panel as recited in claim 1, wherein the electrode layer is transparent.

5. The capacitive touch panel as recited in claim 1, further comprising:

an anti-reflection layer disposed on one side of the cover lens facing away from the electrode layer.

6. The capacitive touch panel as recited in claim 1, wherein the cover lens comprises plastic or glass.

7. The capacitive touch panel as recited in claim 1, wherein the decoration layer is monochromatic or multi-chromatic.

8. The capacitive touch panel as recited in claim 1, wherein the decoration layer is patterned with at least one symbol or text.

9. A capacitive touch panel, comprising:

a cover lens;

a decoration layer disposed on a surface of the cover lens;

a color filter substrate disposed parallel to the cover lens;

a first electrode layer, an insulating layer and a second electrode layer arranged in order and disposed on one side of the color filter substrate facing the cover lens, wherein the second electrode layer cooperates with the first electrode layer to perform touch-sensing operations; and

at least one adhesive layer for binding the cover lens and the color filter substrate.

10. The capacitive touch panel as recited in claim 9, wherein the adhesive layer is disposed between the cover lens and the first electrode layer.

11. The capacitive touch panel as recited in claim 9, wherein the adhesive layer comprises a double-sided adhesive tape or a liquid-phase adhesive.

12. The capacitive touch panel as recited in claim 9, wherein at least one of the first electrode layer and the second electrode layer is transparent.

13. The capacitive touch panel as recited in claim 9, wherein the decoration layer is monochromatic or multi-chromatic.

14. The capacitive touch panel as recited in claim 9, wherein the decoration layer is patterned with at least one symbol or text.

15. A capacitive touch panel, comprising:

a cover lens;

a decoration layer disposed on a surface of the cover lens;

a color filter substrate disposed parallel to the cover lens;

an electrode layer disposed on the color filter substrate to perform touch-sensing operations; and

at least one adhesive layer for binding the cover lens and the color filter substrate.

16. The capacitive touch panel as recited in claim 15, wherein the adhesive layer comprises a double-sided adhesive tape or a liquid-phase adhesive.

17. The capacitive touch panel as recited in claim 15, wherein the electrode layer is transparent.

18. The capacitive touch panel as recited in claim 15, further comprising:

an anti-reflection layer disposed on one side of the cover lens facing away from the electrode layer.

19. The capacitive touch panel as recited in claim 15, wherein the cover lens comprises plastic or glass.