TOUCH PANEL HAVING ELECTROSTATIC PROTECTION STRUCTURE

• US 20130154979A1
• Filed: 12/18/2012
• Published: 06/20/2013
• Est. Priority Date: 12/19/2011
• Status: Abandoned Application

• Current Assignee: Wintek Corporation
• Original Assignee: Wintek Corporation
• Inventors: Li, Chung-Hsien, Chen, Yu-Ting, Chou, Jiann-Liang
• Application Number:
  US13/717,743
• Publication Number:
  US 20130154979A1
• Time in Patent Office: Days
• US Class Current: 345/173
• 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 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• 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 having an electrostatic protection structure includes a transparent substrate, multiple sensing electrodes, a decoration layer and the electrostatic protection structure. The transparent substrate has an active region and a decoration region surrounding the active region. The sensing electrodes are formed on the active region. The decoration layer is disposed on the decoration region. The electrostatic structure includes a conductive ring. The conductive ring is disposed in surrounding arrangement corresponding to the decoration region and is located between the decoration layer and the transparent substrate.

Claims

1. A touch panel having an electrostatic protection structure, comprising:

a transparent substrate, having an active region and a decoration region surrounding the active region;

a plurality of sensing electrodes, formed on the active region;

a decoration layer, disposed on the decoration region; and

an electrostatic protection structure, comprising a conductive ring, disposed in a surrounding arrangement corresponding to the decoration region, and located between the decoration layer and the transparent substrate.

2. The touch panel according to claim 1, wherein the conductive ring is a transparent conductive ring or a metal conductive ring.

3. The touch panel according to claim 1, further comprising a plurality of conductive wires disposed on the decoration layer, and positions of the conductive wires are opposite to a position of the conductive ring.

4. The touch panel according to claim 3, wherein the conductive ring comprises a plurality of columns of strip regions extended in parallel and vertically connected, each of the conductive wires passes between two adjacent strip regions, and the conductive wires and the strip regions are non-overlapped.

5. The touch panel according to claim 3, wherein the conductive ring comprises a plurality of columns of strip regions extended in parallel and vertically connected, each of the conductive wires passes between two adjacent strip regions, and the conductive wires and the strip regions are partially overlapped.

6. The touch panel according to claim 3, wherein the conductive ring comprises a plurality of columns of block regions extended in parallel and vertically connected, the block regions of the same column are connected to one another via a micro connecting line, each of the conductive wires passes between the block regions of two adjacent columns, and the conductive wires and the block regions are partially overlapped.

7. The touch panel according to claim 3, wherein the conductive ring comprises a plurality of columns of parallel and unconnected block regions, each of the conductive wires passes between the block regions of two adjacent columns, and the conductive wires and the block regions are partially overlapped.

8. The touch panel according to claim 3, further comprising a dielectric layer, and the dielectric layer is formed on the decoration layer and is located between the conductive wires and the conductive ring.

9. The touch panel according to claim 1, wherein the conductive ring overlaps with the decoration layer, and a sidewall of the conductive ring and a sidewall of the decoration layer are aligned.

10. The touch panel according to claim 1, wherein a sidewall of the conductive ring is reduced inwardly by a predetermined size relative to a sidewall of the decoration layer, or is increased outwardly by a predetermined size relative to the sidewall of the decoration layer.

11. The touch panel according to claim 1, wherein the electrostatic protection structure further comprises a plurality of protruding portions extending outwardly from a periphery of the conductive ring.

12. The touch panel according to claim 11, wherein each of the protruding portions further comprises at least one tapered portion extending outwardly from a sidewall of the protruding portion, and pointed ends of the tapered portions are located facing one another.

13. The touch panel according to claim 11, wherein each of the protruding portions further comprises at least one rhombus portion extending outwardly from a sidewall of the protruding portion, and pointed ends of the rhombus portions are located facing one another.