Transparent conductive film, information input device, and electronic device

Patent metadata

Field	Value
Publication number	US-9963598-B2
Application number	US-201514593185-A
Country	US
Kind code	B2
Filing date	Jan 9, 2015
Priority date	Feb 23, 2011
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

A transparent conductive film including metal nanowires and a colored compound adsorbed by the metal nanowires is provided. The metal nanowires are a material which absorbs light in the visible light region, and also each has a functional group which is bound to a metal constituting the metal nanowire.

First claim

The invention claimed is:

1. A dispersion liquid comprising:
metal nanowires; and
a colored compound adsorbed to the metal nanowires, wherein
the colored compound is no greater than 0.1 percent by weight of the dispersion liquid, and the colored compound is at least 0.0001 percent by weight of the dispersion liquid, and
the colored compound is represented by the general formula [R—X] in which “R” is a chromophoric group and “X” is a functional group bound to the metal constituting the metal nanowire.

2. The dispersion liquid according to claim 1 , wherein
the metal nanowires are at least 0.01 parts by weight when the dispersion liquid is 100 parts by weight.

3. The dispersion liquid according to claim 1 , wherein
the metal nanowires are no greater than 10 parts by weight when the dispersion liquid is 100 parts by weight.

4. The dispersion liquid according to claim 3 , wherein
the metal nanowires are at least 0.01 parts by weight when the dispersion liquid is 100 parts by weight.

5. The dispersion liquid according to claim 1 , further comprising
a solvent in which the metal nanowires are dispersed.

6. The dispersion liquid according to claim 1 , further comprising
a transparent resin material.

7. The dispersion liquid according to claim 1 , wherein the metal nanowires are silver.

8. A dispersion liquid for a transparent conductive film comprising:
metal nanowires and a colored compound adsorbed to the metal nanowires, wherein
the colored compound is no greater than 0.1 percent by weight of the dispersion liquid and the colored compound is at least 0.0001 percent by weight of the dispersion liquid, and
the colored compound is represented by the general formula [R—X] in which “R” is a chromophoric group and “X” is a functional group bound to the metal constituting the metal nanowire.

9. The dispersion liquid for a transparent conductive film according to claim 8 , wherein the metal nanowires are silver.

10. The dispersion liquid for a transparent conductive film according to claim 8 , wherein the metal nanowires are at least 0.01 parts by weight when the dispersion liquid is 100 parts by weight.

11. The dispersion liquid for a transparent conductive film according to claim 8 , wherein the metal nanowires are no greater than 10 parts by weight when the dispersion liquid is 100 parts by weight.

12. The dispersion liquid for a transparent conductive film according to claim 11 , wherein the metal nanowires are at least 0.01 parts by weight when the dispersion liquid is 100 parts by weight.

13. The dispersion liquid for a transparent conductive film according to claim 8 , further comprising a solvent in which the metal nanowires are dispersed.

14. The dispersion liquid for a transparent conductive film according to claim 8 , further comprising a transparent resin material.

15. The dispersion liquid according to claim 1 , wherein the chromophoric group “R” is a Cr complex or Cu complex.

Assignees

• Dexerials Corp

Inventors

• Iwata Ryosuke
• Mizuno Mikihisa

Classifications

• G06F2203/04112

  Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material · CPC title

• H10K59/80524

  Transparent cathodes, e.g. comprising thin metal layers · CPC title

• H10K59/8051

  Anodes · CPC title

• H01B13/322

  the material being a liquid, jelly-like or viscous substance · CPC title

• G06F3/0446 Primary

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title