TOUCH PANEL

• US 20090225051A1
• Filed: 03/03/2009
• Published: 09/10/2009
• Est. Priority Date: 03/04/2008
• Status: Abandoned Application

• Current Assignee: Wintek Corporation
• Original Assignee: Wintek Corporation
• Inventors: Kuo, Chien-Chung
• Application Number:
  US12/396,488
• Publication Number:
  US 20090225051A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 2203/04106 Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
• CPC Class Codes: G06F 2203/04808 Several contacts: gestures triggering a specific function, e.g. scrolling, zooming, right-click, when the user establishes several contacts with the surface simultaneously; e.g. using several fingers or a combination of fingers and pen
• 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
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

A touch panel having a first conductive layer, a second conductive layer, a plurality of first electrode patterns, and a plurality of second electrode patterns is provided. The first electrode patterns surround the first conductive layer and are electrically connected to the first conductive layer. The second electrode patterns surround the second conductive layer and are electrically connected to the second conductive layer. The first electrode patterns are independent to each other, and the second electrode patterns are independent to each other. The touch panel can be operated in surface capacitive touch sensing mode or a 5-wire resistive touch sensing mode according to the actual requirement. Thereby, the lifespan of the touch panel is prolonged and the reliability thereof is improved.

Claims

1. A touch panel, comprising:

a first substrate and a second substrate opposite to the first substrate;

a first conductive layer formed on the first substrate;

a second conductive layer formed on the second substrate;

a plurality of first electrode patterns formed on the first conductive layer and arranged near the periphery of the first conductive layer;

a plurality of second electrode patterns formed on the second conductive layer and arranged near the periphery of the second conductive layer;

a plurality of spacers provided between the first electrode patterns and the second electrode patterns;

a plurality of first conductive wires electrically connected to the first electrode patterns; and

a plurality of second conductive wires electrically connected to the second electrode patterns;

wherein the touch panel is selectively operated in a surface capacitive touch sensing mode and in a 5-wire resistive touch sensing mode.

2. The touch panel according to claim 1, wherein the first conductive layer is in a rectangular shape, and the first conductive wires are located at the corners or sides of the first conductive layer.

3. The touch panel according to claim 1, wherein the first electrode patterns are independent to each other and substantially arranged near the periphery of the first conductive layer all together.

4. The touch panel according to claim 3, wherein each of the first electrode patterns is a straight line segment or a crooked line segment.

5. The touch panel according to claim 1, wherein the second conductive layer is in a rectangular shape, and the second conductive wires are located at the corners of the second conductive layer.

6. The touch panel according to claim 1, wherein the second electrode patterns are independent to each other and substantially arranged near the periphery of the second conductive layer all together.

7. The touch panel according to claim 6, wherein each of the second electrode patterns is a straight line segment or a crooked line segment.

8. The touch panel according to claim 1, wherein a material of the first conductive layer and the second conductive layer comprises respectively a transparent conductive material.

9. The touch panel according to claim 8, wherein the transparent conductive material is indium tin oxide (ITO) or indium zinc oxide (IZO).