Capacitive touch panel

• US 8,477,113 B2
• Filed: 09/07/2012
• Issued: 07/02/2013
• 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
• Primary Examiner(s): GIESY, ADAM
• Application Number:
  US13/607,436
• Publication Number:
  US 20120325640A1
• Time in Patent Office: 298 Days
• Field of Search: None
• US Class Current: 345/173
• 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 for assembly with a display panel;

a first electrode layer, disposed on a first side of the cover lens;

a nongaseous insulating layer, disposed on a surface of the first electrode layer opposite the cover lens; and

a second electrode layer, disposed on a surface of the nongaseous insulating layer opposite the first electrode layer;

a transparent substrate disposed opposite the cover lens so that the second electrode layer is disposed on a surface of the transparent substrate facing a surface of the first electrode layer; and

a shielding layer, disposed on a surface of the transparent substrate that is different from the other surface whereon the second electrode layer is disposed.

2. The capacitive touch panel as recited in claim 1, wherein the shielding layer comprises indium-tin oxide or indium-zinc oxide.

3. The capacitive touch panel as recited in claim 1, wherein the transparent substrate comprises glass or tempered glass.

4. The capacitive touch panel as recited in claim 1, wherein the transparent substrate is a color filter substrate.

5. The capacitive touch panel as recited in claim 1, wherein the first electrode layer and the second electrode layer comprises indium-tin oxide or indium-zinc oxide.

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, further comprising:

a decoration layer disposed on a surface of the first side of the cover lens.

8. The capacitive touch panel as recited in claim 7, wherein the decoration layer is patterned with at least one symbol or text.

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

10. The capacitive touch panel as recited in claim 7, wherein the decoration layer comprises an insulating material.

11. The capacitive touch panel as recited in claim 1, wherein the nongaseous insulating layer binds the first electrode layer and the second electrode layer to combine the cover lens and the transparent substrate.

12. The capacitive touch panel as recited in claim 1, wherein the nongaseous insulating layer is a transparent adhesive layer.

13. The capacitive touch panel as recited in claim 12, wherein the transparent adhesive layer is a double-sided adhesive tape or a liquid-phase transparent adhesive.

14. The capacitive touch panel as recited in claim 1, wherein the transparent substrate is a color filter substrate.

15. A capacitive touch panel, comprising:

a cover lens for assembly with a display panel;

an electrode layer, disposed on a surface of a first side of the cover lens;

a patterned decoration layer disposed on the surface of the first side of the cover lens;

a transparent substrate disposed opposite the cover lens; and

a shielding layer, disposed on a surface of the transparent substrate and back to the electrode layer.

16. The capacitive touch panel as recited in claim 15, wherein the transparent substrate is a color filter substrate.

17. A capacitive touch panel, comprising:

a cover lens for assembly with a display panel;

an electrode layer, disposed on a surface of a first side of the cover lens; and

a patterned decoration layer disposed on the surface of the first side of the cover lens.