Touch panel

• US 9,229,594 B2
• Filed: 07/30/2013
• Issued: 01/05/2016
• Est. Priority Date: 12/26/2012
• Status: Active Grant

• Current Assignee: HannsTouch Solution, Inc.
• Original Assignee: HannsTouch Solution, Inc.
• Inventors: Chuang, Yao-Chih, Tsai, Ching-Feng, Lee, Hui-Shu, Yen, Yu-Sheng, Shu, Bin-Yu
• Primary Examiner(s): Merlin, Jessica M
• Application Number:
  US13/953,744
• Publication Number:
  US 20140176825A1
• Time in Patent Office: 889 Days
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04107 Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
• CPC Class Codes: G06F 2203/04804 Transparency, e.g. transparent or translucent windows
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

A touch panel is disclosed, which includes a substrate, plural sensing units, plural wires, and a grounding component. The substrate includes a touch area and a wiring area surrounding the touch area. The sensing units are formed in the touch area. The wires are formed in the wiring area and are connected to the sensing units. The ground component is formed in the wiring area and includes plural hollow portions and conductive portions. At least parts of the hollow portions and at least parts of the conductive portions are alternatingly arranged. The situation of metal peeling can be prevented by slicing the grounding component in the touch panel.

Claims

1. A touch panel comprising:

a substrate comprising a touch area and a wiring area surrounding the touch area;

a plurality of sensing units formed in the touch area;

a plurality of wires formed in the wiring area and connected to the sensing units;

a first grounding component formed in the wiring area, wherein the first grounding component comprises a plurality of first hollow portions and a plurality of first conductive portions, and at least parts of the first hollow portions and at least parts of the first conductive portions are alternatingly arranged;

a test pad formed in the wiring area, wherein the test pad comprises at least one second conductive portion and second hollow portion; and

a second grounding component formed at inner sides of the wires and disposed between the test pad and the wires, wherein the second grounding component comprises a plurality of third hollow portions and a plurality of third conductive portions, and at least parts of the third hollow portions and at least parts of the third conductive portions are alternatingly arranged.

2. The touch panel of claim 1, wherein a wire width of the first conductive portions is smaller than 60 μ

m, and a line spacing of the first hollow portions is smaller than 60 μ

m.

3. The touch panel of claim 1, wherein an area ratio of the first conductive portions to the first hollow portions is 0.6-1.4.

4. The touch panel of claim 1, further comprising a plurality of reinforcing ribs connected to the first conductive portions.

5. The touch panel of claim 1, wherein the first conductive portions and the wires are formed in the same layer as being manufactured under the same photo mask.

6. The touch panel of claim 1, wherein part of the substrate is exposed from the hollow portions.

7. The touch panel of claim 1, wherein the first grounding component is formed at the periphery of the wires.

8. The touch panel of cam 1, wherein the first hollow portions are formed as patterns with a grating, matrix or zigzag form.