Transparent conductive film and method for producing the same

• US 8,456,005 B2
• Filed: 10/10/2008
• Issued: 06/04/2013
• Est. Priority Date: 10/26/2007
• Status: Active Grant

• Current Assignee: Resonac Corp. (Resonac Holdings Corp.)
• Original Assignee: Konica Minolta Holdings Incorporated (Konica Minolta Inc.)
• Inventors: Suzuki, Shinichi, Takada, Hiroshi, Kawahara, Yusuke
• Primary Examiner(s): LAM, CATHY FONG FONG
• Application Number:
  US12/738,787
• Publication Number:
  US 20100247870A1
• Time in Patent Office: 1,698 Days
• Field of Search: 428/209, 257 91-103, 257/59, 257/72, 257/746, 313/506
• US Class Current: 257/746
• CPC Class Codes: B22F 1/054 Nanosized particles
• CPC Class Codes: B22F 1/0547 Nanofibres or nanotubes
• CPC Class Codes: B22F 1/10 Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
• CPC Class Codes: B22F 2998/00 Supplementary information concerning processes or compositions relating to powder metallurgy
• CPC Class Codes: C08K 3/08 Metals
• CPC Class Codes: C09D 11/30 Inkjet printing inks
• CPC Class Codes: C09D 11/52 Electrically conductive inks
• CPC Class Codes: C09D 5/24 Electrically-conducting paints conductive materials H01B1/00
• CPC Class Codes: C09D 7/61 inorganic
• CPC Class Codes: H01B 1/16 the conductive material comprising metals or alloys
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: Y10T 428/24612 Composite web or sheet

Abstract

A transparent conductive film which is excellent in transparency, electrical conductivity, in-plane uniformity and durability is disclosed, comprising

a metal conductive pattern and a transparent conductive material on a transparent film substrate, wherein the transparent conductive material contains a conductive polymer and at least one of a conductive fiber and a conductive metal. A production method thereof is also disclosed.

Claims

1. A transparent conductive film as an electrode comprising a metal conductive pattern provided on a transparent film substrate and further thereon a transparent conductive material layer, wherein the transparent conductive material layer comprises a conductive polymer and at least one of a conductive fiber and a conductive metal, and the metal conductive pattern having a line width of not less than 1 μ

m and not more than 100 μ

m.

2. The transparent conductive film as claimed in claim 1, wherein the conductive metal comprises transparent metal nanoparticles.

3. The transparent conductive film as claimed in claim 1, wherein the transparent conductive material layer comprises a base metal-modified conductive polymer formed of the conductive polymer and a base metal.

4. The transparent conductive film as claimed in claim 1, wherein the conductive fiber comprises a metal nano-wire.

5. The transparent conductive film as claimed in claim 1, wherein the transparent conductive material layer comprises an ionic liquid.

6. The transparent conductive film as claimed in claim 1, wherein the metal conductive pattern comprises silver.

7. The transparent conductive film as claimed in claim 2, wherein the transparent metal nanoparticle is selected from the group consisting of gold, platinum, silver, copper, zinc, palladium, rhodium, iridium, ruthenium, nickel, aluminum, tin, lead, carbon and titanium.

8. The transparent conductive film as claimed in claim 4, wherein the metal of the metal nano-wire is selected from the group consisting of Ag, Cu, Au, Al, Rh, ir, Co, Zn, Ni, In, Fe, Pd, Pt, Sn, and Ti.