STABLE GRAPHENE FILM AND PREPARING METHOD OF THE SAME

• US 20130022811A1
• Filed: 06/25/2012
• Published: 01/24/2013
• Est. Priority Date: 06/24/2011
• Status: Abandoned Application

• Current Assignee: Graphene Square, Inc.
• Original Assignee: SungKyunKwan University's Research & Business Foundation (SungKyunKwan University)
• Inventors: AHN, Jong-Hyun, HONG, Byung Hee, YAN, Chao
• Application Number:
  US13/531,665
• Publication Number:
  US 20130022811A1
• Time in Patent Office: Days
• US Class Current: 428/336
• CPC Class Codes: B32B 2255/10 on synthetic resin layer or on natural or synthetic rubber layer
• CPC Class Codes: B32B 2255/26 Polymeric coating
• CPC Class Codes: B32B 2307/202 Conductive
• CPC Class Codes: B32B 2307/206 Insulating
• CPC Class Codes: B32B 2457/208 Touch screens
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: B32B 9/007 comprising carbon, e.g. graphite, composite carbon
• CPC Class Codes: B32B 9/045 of synthetic resin
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: B82Y 40/00 Manufacture or treatment of nanostructures
• CPC Class Codes: C23C 16/0272 Deposition of sub-layers, e.g. to promote the adhesion of the main coating
• CPC Class Codes: C23C 16/26 Deposition of carbon only
• CPC Class Codes: H01B 1/04 mainly consisting of carbon-silicon compounds, carbon or silicon
• CPC Class Codes: Y10T 428/265 1 mil or less
• CPC Class Codes: Y10T 428/30 Self-sustaining carbon mass or layer with impregnant or other layer

Abstract

The present disclosure relates to a stable graphene film, a preparing method of the stable graphene film, a graphene transparent electrode including the stable graphene film, and a touch screen including the stable graphene film.

Claims

1. A stable graphene film, comprising a graphene film, and an insulating or conductive protection film formed on the graphene film.

2. The stable graphene film of claim 1,

wherein the protection film contains an insulating or conductive polymer, or an insulating or conductive inorganic material.

3. The stable graphene film of claim 1, further comprising an intermediate layer containing a conductive polymer or a conductive inorganic material between the protection film and the graphene film.

4. The stable graphene film of claim 3, further comprising a graphene layer between the protection film and the intermediate layer.

5. The stable graphene film of claim 1,

wherein the protection film has thickness of about 100 nm or less.

6. The stable graphene film of claim 2,

wherein the insulating polymer comprises a curable insulating polymer.

13. The stable graphene film of claim 1,

wherein the graphene film is doped.

20. The stable graphene film of claim 1, further comprising an adhesive layer containing an insulating or a conductive polymer between the substrate and the graphene film.

25. A graphene transparent electrode comprising the stable graphene film of claim 1.

26. A tough screen comprising the graphene transparent electrode of claim 25.

7-12. -12. (canceled)

14-19. -19. (canceled)

21-24. -24. (canceled)

27. A method for preparing a stable graphene film, comprising forming an insulating or a conductive protection film on the graphene film.

28. The method for preparing a stable graphene film of claim 27, comprising:

forming the graphene film on a substrate; and

forming the protection film containing an insulating or conductive polymer, or an insulating or conductive inorganic material on a top portion of the graphene film.

29. The method for preparing a stable graphene film of claim 28, further comprising forming an intermediate layer containing a conductive polymer or a conductive inorganic material between the protection film and the graphene film.

30. The method for preparing a stable graphene film of claim 29, further comprising forming a graphene film between the protection film and the intermediate layer.

31. The method for preparing a stable graphene film of claim 27,

wherein the protection film is a thin film having thickness of about 100 nm or less.

34. The method for preparing a stable graphene film of claim 28, further including forming an adhesive layer containing an insulating or conductive polymer between the substrate and the graphene film.

35. The method for preparing a stable graphene film of claim 27, further including doping the graphene film prior to forming the protection film.

39. The method for preparing a stable graphene film of claim 27,

wherein forming the protection film is performed by processes comprising bar-coating, wire bar-coating, spin coating, dip coating, casting, micro gravure coating, gravure coating, roll coating, immersion coating, spray coating, screen printing, flexo printing, offset printing, or inkjet printing.

40. The method for preparing a stable graphene film of claim 27,

wherein forming the protection film containing the insulating or conductive inorganic material or the intermediate layer containing the insulating or conductive inorganic material is performed by processes comprising a vacuum deposition method.

32-33. -33. (canceled)

36-38. -38. (canceled)