Touch panel that uses transparent conductor

• US 7,932,467 B2
• Filed: 05/10/2007
• Issued: 04/26/2011
• Est. Priority Date: 06/30/2005
• Status: Expired due to Fees

• Current Assignee: TDK Corporation
• Original Assignee: TDK Corporation
• Inventors: Yamada, Chieko, Kurose, Shigeo, Hikida, Koichi
• Primary Examiner(s): Wang; Quan-Zhen
• Assistant Examiner(s): Okebato; Sahlu
• Application Number:
  US11/798,082
• Publication Number:
  US 20070268277A1
• Time in Patent Office: 1,447 Days
• Field of Search: 345 84- 85, 345/173, 348818-820, 174/110.R, 174/117.F
• US Class Current: 174/110.00R
• CPC Class Codes: G02F 1/133776 having structures locally influencing the alignment, e.g. unevenness
• CPC Class Codes: G02F 2203/03 scattering
• CPC Class Codes: H01L 31/1884 Manufacture of transparent electrodes, e.g. TCO, ITO
• CPC Class Codes: Y02E 10/50 Photovoltaic [PV] energy

Abstract

A transparent conductor includes a film-shaped or plate-shaped support and a transparent conductive layer that is disposed on the support and has a surface formed as a rough surface. The surface of the transparent conductive layer is formed so that a maximum peak height that shows a surface roughness of the surface is in a range of 0.35 μm to 0.43 μm, inclusive.

Claims

1. A touch panel comprising:

an upper electrode; and

a lower electrode,

wherein the touch panel uses a transparent conductor as one of the upper electrode and the lower electrode, the transparent conductor comprising;

a film-shaped or plate-shaped support; and

a transparent conductive layer that is disposed on the support and has a surface formed as a rough surface,

wherein the surface of the transparent conductive layer is formed so that a maximum peak height that shows a surface roughness of the surface is in a range of approximately 0.35 μ

m to approximately 0.43 μ

m, inclusive.

4. The touch panel according to claim 1, wherein the transparent conductive layer is constructed by compressing conductive fine particles.

2. A touch panel comprising:

an upper electrode; and

a lower electrode,

wherein the touch panel uses a transparent conductor as one of the upper electrode and the lower electrode, the transparent conductor comprising;

a film-shaped or plate-shaped support; and

a transparent conductive layer that is disposed on the support and has a surface formed as a rough surface,

wherein the surface of the transparent conductive layer is formed so that a maximum valley depth that shows a surface roughness of the surface is in a range of approximately 1.03 μ

m to approximately 2.37 μ

m, inclusive.

5. The touch panel according to claim 2, wherein the transparent conductive layer is constructed by compressing conductive fine particles.

3. A touch panel comprising:

an upper electrode; and

a lower electrode,

wherein the touch panel uses a transparent conductor as one of the upper electrode and the lower electrode, the transparent conductor comprising;

a film-shaped or plate-shaped support; and

a transparent conductive layer that is disposed on the support and has a surface formed as a rough surface,

wherein the surface of the transparent conductive layer is formed so that a maximum peak height that shows a surface roughness of the surface is in a range of approximately 0.35 μ

m to approximately 0.43 μ

m, inclusive and a maximum valley depth that shows the surface roughness of the surface is in a range of approximately 1.03 μ

m to approximately 2.37 μ

m, inclusive.

6. The touch panel according to claim 3, wherein the transparent conductive layer is constructed by compressing conductive fine particles.