TOUCH PANEL

• US 20090211819A1
• Filed: 02/25/2009
• Published: 08/27/2009
• Est. Priority Date: 02/26/2008
• Status: Abandoned Application

• Current Assignee: Wintek Corporation
• Original Assignee: Wintek Corporation
• Inventors: Chou, Cheng-Yi, Li, Jyun-Sian, Wang, Chih-Yuan
• Application Number:
  US12/392,652
• Publication Number:
  US 20090211819A1
• Time in Patent Office: Days
• US Class Current: 178/18.30
• 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 includes a first and a second transparent substrates, a first and a second signal lines, a first polymeric conductive film, and a first and a second non-polymeric conductive films. The first signal line is formed on the first transparent substrate, the first polymeric conductive film is formed on the first transparent substrate, and the first non-polymeric conductive film is formed on the first polymeric conductive film. The second signal line is provided on the second transparent substrate, and the second non-polymeric conductive film is provided on the second transparent substrate.

Claims

1. A touch panel, comprising:

a first transparent substrate and a second transparent substrate facing to each other;

a first signal line formed on the first transparent substrate;

a first polymeric conductive film formed on the first transparent substrate;

a first non-polymeric conductive film formed on the first polymeric conductive film;

a second signal line provided on the second transparent substrate;

a second non-polymeric conductive film provided on the second transparent substrate; and

a plurality of insulating spacers provided between the first transparent substrate and the second transparent substrate.

2. The touch panel as claimed in claim 1, further comprising:

a second polymeric conductive film provided between the second transparent substrate and the second non-polymeric conductive film.

3. The touch panel as claimed in claim 1, wherein the polymeric conductive film is made of a PEDOT/PSS conductive polymer, an unsaturated conjugate conductive polymer, a sulfur-containing conductive polymer, or an amine-containing conductive polymer.

4. The touch panel as claimed in claim 1, wherein the polymeric conductive film is made of a conductive polymer composite, and the conductive polymer composite is a PEDOT/PSS conductive polymer doped with inorganic conductive material, an unsaturated conjugate conductive polymer doped with inorganic conductive material, a sulfur-containing conductive polymer doped with inorganic conductive material, or an amine-containing conductive polymer doped with inorganic conductive material.

5. The touch panel as claimed in claim 4, wherein the inorganic conductive material is a conductive metal.

6. The touch panel as claimed in claim 1, wherein the polymeric conductive film is made of a conductive polymer composite, and the conductive polymer composite is made of a PEDOT/PSS conductive polymer doped with a carbon compound, an unsaturated conjugate conductive polymer doped with a carbon compound, a sulfur-containing conductive polymer doped with a carbon compound, or an amine-containing conductive polymer doped with a carbon compound.

7. The touch panel as claimed in claim 6, wherein the carbon compound is made from a carbon nanotube, a carbon fiber, or a bamboo charcoal.

8. The touch panel as claimed in claim 1, wherein the non-polymeric conductive film is made of a metallic oxide material.

9. The touch panel as claimed in claim 8, wherein the metallic oxide material is ITO, IZO, GZO, AZO, or ZnO.

10. The touch panel as claimed in claim 1, further comprising:

a first insulating layer for insulating the first signal line;

a second insulating layer for insulating the second signal line; and

an adhesive provided between the first insulating layer and the second insulating layer.

11. The touch panel as claimed in claim 1, wherein the adhesive is a pressure sensitive adhesive.

12. The touch panel as claimed in claim 1, wherein the first and the second transparent substrates are made of polyethylene terephthalate.

13. A touch panel comprising a first electrode substrate and a second electrode substrate that face to each other and are connected with each other by an adhesive with a gap formed therebetween, wherein at least one of the first and the second electrode substrates has a transparent conductive composite and the transparent conductive composite comprises a polymeric conductive film and a non-polymeric conductive film that are in contact with each other.

14. The touch panel as claimed in claim 13, wherein the polymeric conductive film is made of a PEDOT/PSS conductive polymer, an unsaturated conjugate conductive polymer, a sulfur-containing conductive polymer, or an amine-containing conductive polymer.

15. The touch panel as claimed in claim 13, wherein the polymeric conductive film is made of a conductive polymer composite, and the conductive polymer composite is a PEDOT/PSS conductive polymer doped with inorganic conductive material, an unsaturated conjugate conductive polymer doped with inorganic conductive material, a sulfur-containing conductive polymer doped with inorganic conductive material, or an amine-containing conductive polymer doped with inorganic conductive material.

16. The touch panel as claimed in claim 15, wherein the inorganic conductive material is a conductive metal.

17. The touch panel as claimed in claim 13, wherein the polymeric conductive film is made of a conductive polymer composite, and the conductive polymer composite is made of a PEDOT/PSS conductive polymer doped with a carbon compound, an unsaturated conjugate conductive polymer doped with a carbon compound, a sulfur-containing conductive polymer doped with a carbon compound, or an amine-containing conductive polymer doped with a carbon compound.

18. The touch panel as claimed in claim 17, wherein the carbon compound is made from a carbon nanotube, a carbon fiber, or a bamboo charcoal.

19. The touch panel as claimed in claim 13, wherein the non-polymeric conductive film is made of a metallic oxide material.

20. The touch panel as claimed in claim 19, wherein the metallic oxide material is ITO, IZO, GZO, AZO, or ZnO.