Capacitive touch panel

• US 8,743,074 B2
• Filed: 05/03/2013
• Issued: 06/03/2014
• Est. Priority Date: 12/24/2007
• Status: Active Grant

• Current Assignee: TPK Holding Co., Ltd.
• Original Assignee: Wintek Corporation
• Inventors: Wu, Jason, Weng, Ruey-Shing, Hung, Yen-Chung, Lai, Chih-Chang
• Primary Examiner(s): GIESY, ADAM
• Application Number:
  US13/887,173
• Publication Number:
  US 20130241875A1
• Time in Patent Office: 396 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;

a first electrode layer disposed on the cover lens;

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

a substrate disposed parallel to the cover lens;

a second electrode layer disposed on the substrate, 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 substrate, wherein the adhesive layer comprises a double-sided adhesive tape or a liquid-phase adhesive.

2. The capacitive touch panel as recited in claim 1, wherein at least one of the first electrode layer and the second electrode layer is transparent.

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

an anti-reflection layer disposed on one side of the cover lens opposite the first electrode layer.

4. The capacitive touch panel as recited in claim 3, further comprising:

an anti-reflection layer disposed between the cover lens and the first electrode layer.

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

an anti-reflection layer disposed between the cover lens and the first 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 substrate comprises glass or tempered glass.

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

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

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