Capacitive touch panel and electrode structure thereof

• US 8,330,738 B2
• Filed: 04/25/2011
• Issued: 12/11/2012
• Est. Priority Date: 12/24/2007
• Status: Active Grant

• Current Assignee: TPK Holding Co., Ltd.
• Original Assignee: Wintek Corporation
• Inventors: Lai, Chih-Chang, Hung, Yen Chung, Weng, Ruey-Shing
• Primary Examiner(s): GIESY, ADAM
• Application Number:
  US13/093,348
• Publication Number:
  US 20110199332A1
• Time in Patent Office: 596 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. An electrode structure of a capacitive touch panel, comprising:

a cover lens for assembly with a display panel;

a nongaseous insulating layer formed on a first side of the cover lens;

an electrode layer formed on a first side of the nongaseous insulating layer; and

a decoration layer disposed on a surface of the cover lens and patterned with at least one symbol or text.

2. The electrode structure of the capacitive touch panel as recited in claim 1, wherein the nongaseous insulating layer is a planarization layer.

3. The electrode structure of the capacitive touch panel as recited in claim 1, wherein the nongaseous insulating layer covers the decoration layer.

4. The electrode structure of the capacitive touch panel as recited in claim 1, wherein the decoration layer is disposed on a periphery of the cover lens.

5. The electrode structure of the capacitive touch panel as recited in claim 4, wherein the nongaseous insulating layer covers the decoration layer.

6. The electrode structure of the capacitive touch panel as recited in claim 1, wherein the decoration layer is disposed between the cover lens and the electrode layer.

7. 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; and

a decoration layer disposed on the cover lens.

8. The capacitive touch panel as recited in claim 7, further comprising a planarization layer disposed between the decoration layer and the first electrode layer.

9. The capacitive touch panel as recited in claim 7, wherein the decoration layer is disposed on a periphery of the cover lens.