GAS BARRIER FILM INCLUDING GRAPHENE LAYER, FLEXIBLE SUBSTRATE INCLUDING THE SAME, AND MANUFACTURING METHOD THEREOF

• US 20140272350A1
• Filed: 09/28/2012
• Published: 09/18/2014
• Est. Priority Date: 10/28/2011
• Status: Abandoned Application

• Current Assignee: Cheil Industries Incorporated
• Original Assignee: Cheil Industries Incorporated
• Inventors: Kim, Tae Ho, Kim, Young Kwon, Kee, Seung Beom, Kim, Sung Kook, Im, Chang Gyu
• Application Number:
  US14/354,905
• Publication Number:
  US 20140272350A1
• Time in Patent Office: Days
• US Class Current: 428/213
• CPC Class Codes: C08J 7/0423 with at least one layer of inorganic material and at least one layer of a composition containing a polymer binder
• CPC Class Codes: C08J 7/043 Improving the adhesiveness of the coatings per se, e.g. forming primers adhesives in the form of films or foils characterised by the primer layers between the polymer carriers and the adhesives C09J7/50
• CPC Class Codes: C08J 7/048 Forming gas barrier coatings
• CPC Class Codes: C23C 16/26 Deposition of carbon only
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells
• CPC Class Codes: H10K 50/844 Encapsulations
• CPC Class Codes: Y10T 428/2495 Thickness [relative or absolute]
• 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 invention relates to a gas barrier film, a flexible substrate including the same, and a manufacturing method thereof. More specifically, a barrier film of the present invention relates to a first polymer layer, a gas barrier film including a graphene layer formed on the first polymer layer, a flexible substrate including the same, and a manufacturing method thereof.

Claims

1. A gas barrier film comprising:

a polymer film; and

a first graphene layer formed on the polymer film.

2. The gas barrier film according to claim 1, wherein the first graphene layer has a thickness of about 0.4 nm to about 5 nm.

3. The gas barrier film according to claim 1, wherein the first graphene layer is formed as a single layer or multiple layers.

4. The gas barrier film according to claim 1, wherein the polymer film comprises at least one selected from polyorganosiloxane, polyolefin, ethylene-propylene copolymers, polyester, polyamide, polyvinylacetate, polycarbonate, polyvinylchloride, acrylic, fluorinated polyolefin, aromatic vinyl polymers, polyimide, epoxy resins, and polyurethane.

5. The gas barrier film according to claim 1, wherein the first graphene layer further comprises a metal oxide.

6. The gas barrier film according to claim 5, further comprising:

a first organic layer formed on the first graphene layer.

7. The gas barrier film according to claim 6, further comprising:

at least one sequential stack structure of a second graphene layer and a second organic layer formed on the first organic layer.

8. The gas barrier film according to claim 1, further comprising:

a metal layer on the first graphene layer, the metal layer comprising at least one of a metal, a metal oxide, and a metal nitride.

9. The gas barrier film according to claim 8, wherein the metal layer adjoins the first graphene layer.

10. The gas barrier film according to claim 8, further comprising:

a first organic layer formed between the first graphene layer and the metal layer.

11. The gas barrier film according to claim 9, further comprising:

a second organic layer formed on the metal layer.

12. The gas barrier film according to claim 6, wherein the first organic layer comprises at least one selected from polyorganosiloxane, polyolefin, ethylene-propylene copolymers, polyester, polyamide, polyvinylacetate, polycarbonate, polyvinylchloride, acrylic polymer, fluorinated polyolefin, aromatic vinyl polymers, polyimide, epoxy resins, and polyurethane.

13. The gas barrier film according to claim 7, wherein the second organic layer comprises at least one selected from polyorganosiloxane, polyolefin, ethylene-propylene copolymers, polyester, polyamide, polyvinylacetate, polycarbonate, polyvinylchloride, acrylic polymer, fluorinated polyolefin, aromatic vinyl polymers, polyimide, epoxy resins, and polyurethane.

14. The gas barrier film according to claim 8, wherein the metal comprises at least one selected from aluminum, silicon, indium, tin, and zinc.

15. The gas barrier film according to claim 6, wherein the first organic layer has a thickness of about 0.01 μ

m to about 10 μ

m.

16. The gas barrier film according to claim 7, wherein the second organic layer has a thickness of about 0.01 μ

m to about 10 μ

m.

17. The gas barrier film according to claim 6, wherein the polymer film has a thickness about 3 to 2,000 times greater than the thickness of the first organic layer.

18. The gas barrier film according to claim 7, wherein the polymer film has a thickness about 3 to 2,000 times greater than the thickness of the second organic layer.

19. The gas barrier film according to claim 1, wherein the gas barrier film has a light transmittance of about 76% or more at a wavelength of 550 nm.

20. The gas barrier film according to claim 1, wherein the gas barrier film has a water vapor transmission rate of about 10⁻

6 to about 1 cc/m²·

day, as measured at 23°

C. and 70% relative humidity for 100 hours.

21. The gas barrier film according to claim 1, wherein the gas barrier film has an oxygen transmission rate of about 10⁻

5 to about 1 cc/m²·

day, as measured at 23°

C. and 70% relative humidity for 100 hours.

22. A flexible substrate comprising the gas barrier film according to claim 1.

24. The method according to claim 13, wherein the graphene solution is coated once or more such that the graphene layer has a thickness of about 0.4 nm to about 5 nm.

23. A method of manufacturing a gas barrier film, comprising:

coating a graphene solution onto a polymer film to form a graphene layer on the polymer film, the coating comprising at least one selected from spin coating, dip coating, solvent casting, chemical vapor deposition, slot die coating, and spray coating.