Transparent conductor, composition for preparing the same, and optical display apparatus including the same

Patent metadata

Field	Value
Publication number	US-9384865-B2
Application number	US-201314050445-A
Country	US
Kind code	B2
Filing date	Oct 10, 2013
Priority date	Oct 11, 2012
Publication date	Jul 5, 2016
Grant date	Jul 5, 2016

Abstract

A transparent conductor, a composition for the same, and an apparatus including the same, the transparent conductor including a transparent conductive film, the transparent conductive film including a metal nanowire and a conductive polymer, wherein the transparent conductor has a b* value of less than about 1.78 in color coordinates of CIE Lab at wavelengths of 400 nm to 700 nm.

First claim

What is claimed is:

1. A transparent conductor, comprising:
a transparent conductive film, the transparent conductive film including a metal nanowire and a conductive polymer,
wherein the transparent conductor has a b* value of less than about 1.78 in color coordinates of CIE Lab at wavelengths of 400 nm to 700 nm, and
wherein the conductive polymer is present in an amount of about 0.5 wt % to about 15 wt % in the transparent conductive film.

2. The transparent conductor as claimed in claim 1 , wherein the transparent conductor has a haze value of about 1.0% to about 2.0% at wavelengths of 400 nm to 700 nm.

3. The transparent conductor as claimed in claim 1 , wherein the transparent conductive film has a deviation of surface resistance from about 5% to about 15%.

4. The transparent conductor as claimed in claim 1 , wherein the transparent conductive film is composed of a single layer.

5. The transparent conductor as claimed in claim 1 , wherein the transparent conductive film has a thickness of about 10 nm to about 300 nm.

6. The transparent conductor as claimed in claim 1 , wherein the metal nanowire is a silver nanowire, a copper nanowire, a gold nanowire, or a mixture thereof.

7. The transparent conductor as claimed in claim 1 , wherein the metal nanowire is present in an amount of about 85 wt % to about 99 wt % in the transparent conductive film.

8. The transparent conductor as claimed in claim 1 , wherein an aspect ratio (L/d) of a length (L) of the metal nanowire to a cross-sectional diameter (d) of the metal nanowire is about 10 to about 2,000.

9. The transparent conductor as claimed in claim 1 , wherein the conductive polymer includes a water-based dopant.

10. The transparent conductor as claimed in claim 1 , wherein the conductive polymer includes at least one of polystyrene sulfonate-doped polyethylene dioxythiophene or protein-doped polypyrrole.

11. The transparent conductor as claimed in claim 1 , wherein the transparent conductive film is free from a compound including a urethane bond.

12. The transparent conductor as claimed in claim 1 , further comprising a base layer on the transparent conductive film, the base layer including at least one film selected from a polycarbonate film, a polyester film, a polyolefin film, a cyclic olefin polymer film, a polysulfone film, a polyimide film, a silicone film, a polystyrene film, a polyacryl film, or a polyvinyl chloride film.

13. The transparent conductor as claimed in claim 1 , wherein the transparent conductive film is formed of a composition including the metal nanowire, the conductive polymer, and a heat curing agent.

14. The transparent conductor as claimed in claim 13 , wherein the composition further includes a UV curable unsaturated compound and a photopolymerization initiator.

15. An optical display apparatus comprising the transparent conductor as claimed in claim 1 .

16. A composition for a transparent conductive film, the composition comprising:
a metal nanowire,
a conductive polymer, and
a heat curing agent,
wherein the conductive polymer is present in an amount about 0.5 wt % to about 15 wt %, basd on a total weight of the metal nanowire and the conductive polymer.

17. The composition as claimed in claim 16 , wherein the composition includes:
about 90 wt % to about 95 wt % of the metal nanowire,
about 5 wt % to about 10 wt % of the conductive polymer, and
about 0.01 parts by weight to about 1 part by weight of the heat curing agent, based on 100 total parts by weight of the metal nanowire and the conductive polymer.

18. The composition as claimed in claim 16 , further comprising a UV curable unsaturated compound and a photopolymerization initiator.

19. The composition as claimed in claim 18 , wherein the composition includes:
about 95 wt % to about 97 wt % of the metal nanowire,
about 1 wt % to about 3 wt % of the conductive polymer,
about 2 wt % to about 4 wt % of the UV curable unsaturated compound, and
about 0.01 parts by weight to about 1 part by weight of the heat curing agent and about 0.01 parts by weight to about 1 part by weight of the photopolymerization initiator, based on 100 total parts by weight of the metal nanowire, the conductive polymer, and the UV curable unsaturated compound.

Assignees

• Kim Do Young
• Koo Young Kwon
• Shin Dong Myeong
• Hwang Oh Hyeon
• Kang Kyoung Ku
• Cheil Ind Inc

Inventors

• Kim Do Young
• Koo Young Kwon
• Shin Dong Myeong
• Hwang Oh Hyeon
• Kang Kyoung Ku

Classifications

• H01B1/124 Primary

  Intrinsically conductive polymers · CPC title

• H01B1/22

  the conductive material comprising metals or alloys · CPC title

• Y10T428/31507

  Of polycarbonate · CPC title