Transparent conductive film and method for producing transparent conductive film

Patent metadata

Field	Value
Publication number	US-9315679-B2
Application number	US-59780208-A
Country	US
Kind code	B2
Filing date	Apr 24, 2008
Priority date	Apr 27, 2007
Publication date	Apr 19, 2016
Grant date	Apr 19, 2016

Abstract

Disclosed is a transparent conductive film containing a single-walled carbon nanotube and a fullerene.

First claim

The invention claimed is:

1. A transparent conductive film, comprising:
a single-walled carbon nanotube; and
a fullerene directly bonded to an OH group,
wherein, when a surface resistivity after having kept the transparent conductive film at 80° C. for 14 days is defined as R1 (Ω/□), and a surface resistivity before keeping the transparent conductive film at 80° C. for 14 days as R0 (Ω/□), an increase ratio [(R1−R0)/R0×100] of a surface resistivity is 30 or less,
wherein the total light transmittance of the transparent conductive film is 80% or more and the surface resistivity of the transparent conductive film is 3000Ω/□ or less.

2. The transparent conductive film as claimed in claim 1 , comprising the single-walled carbon nanotube and the fullerene in an identical layer.

3. The transparent conductive film as claimed in claim 1 , wherein a layer comprising the single-walled carbon nanotube and a layer comprising the fullerene are different.

4. The transparent conductive film as claimed in claim 3 , wherein the layer comprising the fullerene is present on the layer comprising the single-walled carbon nanotube.

5. The transparent conductive film as claimed in claim 1 , having a content of 10 to 1000 mass parts of the fullerene per 100 mass parts of the single-walled carbon nanotube.

6. The transparent conductive film as claimed in claim 1 , wherein the fullerene has a polar group.

7. The transparent conductive film as claimed in claim 1 , wherein the quantity of the hydroxyl groups is 5 to 30 groups per one molecule of the fullerene.

8. The transparent conductive film as claimed in claim 1 , wherein the quantity of the hydroxyl groups is 8 to 15 groups per one molecule of the fullerene.

9. The transparent conductive film as claimed in claim 1 , having a content of 20 to 100 mass parts of the fullerene per 100 mass parts of the single-walled carbon nanotube.

10. The transparent conductive film as claimed in claim 1 , wherein the fullerene is C60.

11. The transparent conductive film as claimed in claim 1 , which has a surface resistivity of 200Ω/□ or less.

12. A method of making the transparent conductive film as claimed in claim 1 , comprising preparing a transparent conductive film comprising the single-walled carbon nanotube and the fullerene directly bonded to an OH group.

Assignees

• Kitano Takahiro
• Kuraray Co

Inventors

• Kitano Takahiro

Classifications

• B05D2601/20

  used for non-pigmentation effect · CPC title

• Y10T428/30

  Self-sustaining carbon mass or layer with impregnant or other layer · CPC title

• C01B2202/00

  Structure or properties of carbon nanotubes · CPC title

• B05D7/04

  to surfaces of films or sheets (producing layered products by applying coatings of pasty or pulverulent plastics B29C41/00) · CPC title

• C09D5/24 Primary

  Electrically-conducting paints {(conductive materials H01B1/00)} · CPC title