TRANSPARENT CONDUCTIVE FILM

• US 20110045285A1
• Filed: 08/18/2010
• Published: 02/24/2011
• Est. Priority Date: 08/19/2009
• Status: Abandoned Application

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: SAIKI, Takafumi, Imamura, Naoya
• Application Number:
  US12/858,777
• Publication Number:
  US 20110045285A1
• Time in Patent Office: Days
• US Class Current: 428/339
• CPC Class Codes: B05D 3/144 of polymeric substrates
• CPC Class Codes: B05D 7/04 to surfaces of films or sheets producing layered products by applying coatings of pasty or pulverulent plastics B29C41/00
• CPC Class Codes: B05D 7/54 No clear coat specified
• CPC Class Codes: C08J 2367/02 Polyesters derived from dicarboxylic acids and dihydroxy compounds; C08J2367/06 takes precedence
• CPC Class Codes: C08J 7/042 with two or more layers, where at least one layer of a composition contains a polymer binder
• CPC Class Codes: C08J 7/043 Improving the adhesiveness of the coatings per se, e.g. forming primers adhesives in the form of films or foils characterised by the primer layers between the polymer carriers and the adhesives C09J7/50
• CPC Class Codes: C08J 7/044 Forming conductive coatings; Forming coatings having anti-static properties
• CPC Class Codes: C08J 7/046 Forming abrasion-resistant coatings; Forming surface-hardening coatings
• CPC Class Codes: G02F 1/13439 characterised by their electrical, optical, physical properties; materials therefor; method of making
• CPC Class Codes: G02F 2202/022 polymeric
• CPC Class Codes: Y10T 428/269 including synthetic resin or polymer layer or component
• CPC Class Codes: Y10T 428/31786 Of polyester [e.g., alkyd, etc.]

Abstract

A transparent conductive film includes a polymer layer disposed on one of surfaces of a film base formed from polyester and biaxially stretched, and a transparent conductive layer disposed on the polymer layer. A difference between a refractive index η1 of the film base and a refractive index η2 of the polymer layer, |η1−η2| is set to at most 0.02. The polymer layer contains particles of metal oxide having a refractive index ηP of at least 1.80, and a binder holding the particles and having a refractive index ηB of at least 1.60. A mass ratio of the particles of metal oxide with respect to the binder is set to be more than 0% and equal to or less than 100%.

Claims

1. A transparent conductive film comprising:

a film base formed from polyester and biaxially stretched;

a polymer layer formed on one of surfaces of said film base and containing particles of metal oxide having a refractive index η

P of at least 1.80 and a binder holding said particles and having a refractive index η

B of at least 1.60, a mass ratio of said particles with respect to said binder being at most 100%, and a difference between a refractive index η

1 of said film base and a refractive index η

2 of said polymer layer being at most 0.02; and

a transparent conductive layer formed on said polymer layer.

2. A transparent conductive film as defined in claim 1, wherein said metal oxide includes tin oxide and antimony oxide, and when mass of said tin oxide is denoted by M1 and mass of said antimony oxide is denoted by M2, a content of said antimony oxide with respect to said tin oxide obtained by (M2/M1)×

100 is more than 0 mass % and equal to or less than 5 mass %.

3. A transparent conductive film as defined in claim 2, wherein a thickness of said polymer layer is in a range of {500/(4×

η

2)}nm or more and {600/(4×

η

2)}nm or less.

4. A transparent conductive film as defined in claim 3, wherein a glass transition temperature Tg of polymer as said binder is at least 90°

C.