Touch panel

• US 10,168,841 B2
• Filed: 11/17/2015
• Issued: 01/01/2019
• Est. Priority Date: 12/26/2012
• Status: Active Grant

• Current Assignee: HannsTouch Solution, Inc.
• Original Assignee: HannsTouch Solution, Inc.
• Inventors: Lee, Hui-Shu, Chuang, Yao-Chih, Tsai, Ching-Feng, Yen, Yu-Sheng, Shu, Bin-Yu
• Primary Examiner(s): Chatly, Amit
• Application Number:
  US14/944,185
• Publication Number:
  US 20160070389A1
• Time in Patent Office: 1,141 Days
• Field of Search: 345173-178
• 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;

a shielding layer formed only at the periphery of the substrate for defining a touch area and a wiring area surrounding the touch area, wherein the shielding layer is a light-shielding layer and comprises black photoresist;

a sensitive layer formed at the touch area, comprising a plurality of sensing units;

a signal wire layer formed on the sensitive layer and the shielding layer, wherein the signal wire layer comprises a first grounding component directly on the shielding layer, the first grounding component is only disposed on the shielding layer and comprises a plurality of first conductive strips and a plurality of reinforcing ribs laterally connecting the first conductive strips such that a plurality of first hollow portions are enclosed by the first conductive strips and the reinforcing ribs, wherein at least parts of the first hollow portions and at least parts of the first conductive strips are alternatingly arranged; and

a protecting layer formed on the sensitive layer and the signal wire layer.

2. The touch panel of claim 1, wherein a wire width of the first conductive strips 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 strips to the first hollow portions is 0.6-1.4.

4. The touch panel of claim 1, wherein the signal wiring layer further comprises a test pad formed at the wiring area, and the test pad comprises at least one second conductive strips and second hollow portion.

5. The touch panel of claim 4, wherein the test pad directly touches the shielding layer.

6. The touch panel of claim 4, wherein the signal wiring layer further comprises:

a plurality of wires formed between the test pad and the first grounding component and connecting to the sensitive layer.

7. The touch panel of claim 6, wherein the signal wiring layer further comprises:

a second grounding component formed 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 strips, and at least parts of the third hollow portions and at least parts of the third conductive strips are alternatingly arranged.

8. The touch panel of claim 4, wherein the signal wiring layer further comprises:

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

9. The touch panel of claim 1, wherein the signal wiring layer further comprises:

a plurality of wires formed at the wiring area and being inside of the first grounding component and connecting to the sensitive layer.

10. The touch panel of claim 1, wherein the signal wiring layer further comprises:

a second grounding component formed at the wiring area and being inside of the first grounding component, wherein the second grounding component comprises a plurality of third hollow portions and a plurality of third conductive strips, and at least parts of the third hollow portions and at least parts of the third conductive strips are alternatingly arranged.

11. The touch panel of claim 10, wherein the signal wiring layer further comprises:

a plurality of wires formed between the second grounding component and the first grounding component and connecting to the sensitive layer.

12. The touch panel of claim 10, wherein the second grounding component directly touches the shielding layer.