Conductive film composition, conductive film fabricated using the same, and optical display apparatus including the same

Patent metadata

Field	Value
Publication number	US-9685253-B2
Application number	US-201414310035-A
Country	US
Kind code	B2
Filing date	Jun 20, 2014
Priority date	Dec 21, 2011
Publication date	Jun 20, 2017
Grant date	Jun 20, 2017

Abstract

A conductive film composition for forming a conductive film in a single coating layer on one or both sides of a base film, the composition including a metal nanowire, and polyfunctional monomers.

First claim

What is claimed is:

1. A conductive film composition for forming a conductive film in a single coating layer on one or both sides of a base film, the composition comprising:
a metal nanowire;
polyfunctional monomers, the polyfunctional monomers being free from a urethane group; and
an initiator, the initiator absorbing light in a wavelength range of about 150 nm to about 500 nm to cause an optical reaction,
wherein the metal nanowire is present in an amount of at least about 50 wt %, based on a total amount of the metal nanowire and the polyfunctional monomers.

2. The conductive film composition as claimed in claim 1 , wherein the metal nanowire includes a silver nanowire.

3. The conductive film composition as claimed in claim 1 , wherein the metal nanowire has an aspect ratio L/d of length L to diameter d ranging from about 10 to about 1,000.

4. The conductive film composition as claimed in claim 1 , wherein the polyfunctional monomers form an optically transparent matrix after being cured.

5. The conductive film composition as claimed in claim 1 , wherein, when the conductive film composition is formed as the conductive film on the base film, the conductive film has a haze value of about 3% or less and a total luminous transmittance of about 90% or more.

6. The conductive film composition as claimed in claim 1 , wherein the polyfunctional monomers include a polyfunctional monomer that has about three or more (meth)acrylate groups.

7. The conductive film composition as claimed in claim 1 , wherein the polyfunctional monomers include a mixture of first polyfunctional monomers and second polyfunctional monomers, and the first polyfunctional monomers have a different number of (meth)acrylate groups relative to the second polyfunctional monomers.

8. The conductive film composition as claimed in claim 1 , wherein:
the polyfunctional monomers include a mixture of first polyfunctional monomers containing 5 or 6 functional groups and second polyfunctional monomers containing 3 or 4 functional groups, and
a weight ratio of the first polyfunctional monomers to the second polyfunctional monomers ranges from about 1:1 to about 1:3.

9. The conductive film composition as claimed in claim 8 , wherein the polyfunctional monomers include about 5 to about 25 wt % of the first polyfunctional monomers and about 5 to about 35 wt % of the second polyfunctional monomers, based on a total amount of the metal nanowire and the polyfunctional monomers.

10. The conductive film composition as claimed in claim 1 , wherein the polyfunctional monomers are present in an amount of about 10 to about 60 wt %, based on a total amount of the metal nanowire and the polyfunctional monomers.

11. The conductive film composition as claimed in claim 1 , wherein the polyfunctional monomers have a weight average molecular weight ranging from about 200 g/mol to about 600 g/mol.

12. The conductive film composition as claimed in claim 1 , wherein the composition includes:
about 60 to about 90 wt % of the metal nanowire, and about 10 to about 40 wt % of the polyfunctional monomers, based on a total amount of the metal nanowire and the polyfunctional monomers, and
about 0.01 to about 2 parts by weight of the initiator, based on 100 parts by weight of the metal nanowire and the polyfunctional monomers.

13. The conductive film composition as claimed in claim 1 , further comprising a mono-functional monomer.

14. The conductive film composition as claimed in claim 13 , wherein the mono-functional monomer is present in an amount of about 1 to about 35 parts by weight, based on 100 parts by weight of the polyfunctional monomers.

15. A conductor, comprising:
a base film; and
a conductive film coated in a single layer on at least one side of the base film, the conductive film being formed from the conductive film composition as claimed in claim 1 .

16. The conductor as claimed in claim 15 , wherein the conductive film has a surface resistance of about 600Ω/□ or less.

17. The conductor as claimed in claim 15 , wherein the base film is selected from the group of polyester, polycarbonate, polyolefin, cyclic olefin polymer, polysulfone, polyimide, silicone, polystyrene, polyacryl, and polyvinyl chloride films.

18. The conductor as claimed in claim 15 , further comprising a functional layer on one or both sides of the base film.

19. The conductor as claimed in claim 18 , wherein the functional layer includes one or more selected from the group of a hard coating layer, an anti-corrosion layer, anti-glare coating layer, an adhesion promoter layer, and a coating layer for preventing elution of oligomer from the conductive film.

20. The conductor as claimed in claim 15 , wherein the conductor has a haze value of about 3% or less and a total luminous transmittance of about 90% or more.

21. An optical display apparatus comprising a conductive film formed from the conductive film composition as claimed in claim 1 .

22. A conductive film composition for forming a conductive film in a single coating layer on one or both sides of a base film, the composition comprising:
a metal nanowire; and
polyfunctional monomers,
wherein the polyfunctional monomers include a mixture of first polyfunctional monomers and second polyfunctional monomers, and the first polyfunctional monomers have a different number of (meth)acrylate groups relative to the second polyfunctional monomers, and
wherein the metal nanowire is present in an amount of at least about 50 wt %, based on a total amount of the metal nanowire and the polyfunctional monomers.

23. A conductive film composition for forming a conductive film in a single coating layer on one or both sides of a base film, the composition comprising:
a metal nanowire; and
polyfunctional monomers,
wherein:
the polyfunctional monomers include a mixture of first polyfunctional monomers containing 5 or 6 functional groups and second polyfunctional monomers containing 3 or 4 functional groups, and
a weight ratio of the first polyfunctional monomers to the second polyfunctional monomers ranges from about 1:1 to about 1:3.

Assignees

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

Inventors

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

Classifications

• G06F3/041

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title

• H01B1/22 Primary

  the conductive material comprising metals or alloys · CPC title

• Y10T428/31663

  As siloxane, silicone or silane · CPC title

• Y10T428/31507

  Of polycarbonate · CPC title

• Y10T428/31692

  Next to addition polymer from unsaturated monomers · CPC title