Touch panel

• US 20060038790A1
• Filed: 08/17/2004
• Published: 02/23/2006
• Est. Priority Date: 08/17/2004
• Status: Abandoned Application

• Current Assignee: Wintek Corporation
• Original Assignee: Wintek Corporation
• Inventors: Chen, Chien-Chung, Hwang, Chin-Pei, Chen, Kuan-Lin
• Application Number:
  US10/919,329
• Publication Number:
  US 20060038790A1
• Time in Patent Office: Days
• US Class Current: 345/173
• 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

Abstract

A touch panel has a substrate, a non-oxide adhesive layer and an indium tin oxide (ITO) film. The non-oxide adhesive layer is attached on the substrate and the ITO film is attached on the non-oxide adhesive layer. The non-oxide adhesive layer will not diffuse oxygen in the high temperature environment to affect the indium tin oxide film, so that the panel keeps in a thermal stable condition.

Claims

1. A touch panel, comprising:

a substrate having a top side and a bottom side;

a non-oxide adhesive layer having a fist side and a second side, wherein the first side of the non-oxide adhesive layer is attached on the top side of the substrate, and

an indium tin oxide film attached on the second side of the non-oxide adhesive layer.

2. The touch panel as defined in claim 1, wherein the substrate has a main member and a hard coating layer on a side of the main member and the non-oxide adhesive layer is attached on a side of the main member without the hard coating layer.

3. The touch panel as defined in claim 2, wherein the main member 10 is made of a material chosen from polyethylene terephthalate (PET), polyethersulfone (PES) or polycarbonate (PC) and a thickness thereof is beween 100 μ

m and 200 μ

m.

4. The touch panel as defined in claim 2, wherein the hard coating layer has a thickness between 3 μ

m and 10 μ

m.

5. The touch panel as defined in claim 1, wherein the substrate has a main member and two hard coating layers on opposite sides of the main member and the non-oxide adhesive layer is attached on the hard coating layer.

6. The touch panel as defined in claim 5, wherein the main member 10 is made of a material chosen from polyethylene terephthalate (PET), polyethersulfone (PES) or polycarbonate (PC) and a thickness thereof is beween 100 μ

m and 200 μ

m.

7. The touch panel as defined in claim 5, wherein the hard coating layer has a thickness between 3 μ

m and 10 μ

m.

8. The touch panel as defined in claim 1, wherein the non-oxide adhesive layer can be made of a material chosen from silicon nitride (Si₃N₄), titanium nitride (TiN), zirconium nitride (ZrN), silicon carbide (SiC), titanium carbide (TiC), aluminum nitride (AlN) or chromium nitride (CrN).