Substrate film, gas barrier film, and display using the same

• US 20040018364A1
• Filed: 03/06/2003
• Published: 01/29/2004
• Est. Priority Date: 03/08/2002
• Status: Active Grant

• Current Assignee: Dai Nippon Printing Company Limited
• Original Assignee: Dai Nippon Printing Company Limited
• Inventors: Yoshihara, Toshio, Komada, Minoru, Ota, Yurie, Tokunaga, Keiji
• Granted Patent: US 6,866,949 B2
• Time in Patent Office: Days
• US Class Current: 428/447
• CPC Class Codes: B32B 27/06 as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a layer of a particular substance B32B9/045; next to a bituminous or tarry layer B32B11/046; next to a water setting substance layer B32B13/12; next to a metal layer B32B15/08; next to a glass layer B32B17/10; next to a layer formed of natural mineral fibres or particles B32B19/045; next to a wood layer B32B21/08; next to a cellulosic plastic layer B32B23/08; next to a natural or synthetic rubber layer B32B25/08
• 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: C09K 2323/00 Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
• CPC Class Codes: C09K 2323/06 Substrate layer characterised by chemical composition
• CPC Class Codes: G02F 1/133345 Insulating layers G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence
• CPC Class Codes: H05B 33/04 Sealing arrangements , e.g. against humidity
• CPC Class Codes: H10K 2102/311 Flexible OLED
• CPC Class Codes: H10K 50/80 Constructional details
• CPC Class Codes: H10K 50/844 Encapsulations
• CPC Class Codes: H10K 59/873 Encapsulations
• CPC Class Codes: H10K 77/00 Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
• CPC Class Codes: H10K 77/10 Substrates, e.g. flexible substrates
• CPC Class Codes: Y02E 10/549 Organic PV cells
• CPC Class Codes: Y10T 428/266 of base or substrate
• CPC Class Codes: Y10T 428/269 including synthetic resin or polymer layer or component
• CPC Class Codes: Y10T 428/31507 Of polycarbonate
• CPC Class Codes: Y10T 428/31663 As siloxane, silicone or silane
• CPC Class Codes: Y10T 428/31678 Of metal

Abstract

The present invention provides a gas barrier film comprising a composite film provided with a gas barrier layer having a laminated structure including at least a metal oxide thin layer on a substrate film having a (1) 80 ppm/°C. or less coefficient of thermal expansion at 50° C. to 150° C. and/or a 10 ppm/% RH or less coefficient of humidity expansion at 25° C., and a (2) 150C.° or more glass transition temperature, and a display with a display element covered with the same.

Claims

1. A gas barrier film comprising a composite film provided with a gas barrier layer having a laminated structure including at least a metal oxide thin layer on a substrate film having a (1) 80 ppm/°

C. or less coefficient of thermal expansion at 50°

C. to 150°

C. and/or a 10 ppm/% RH or less coefficient of humidity expansion at 25°

C., and a (2) 150C.°

or more glass transition temperature.

2. A gas barrier film according to claim 1, wherein the gas barrier layer has a laminated structure with at least the thin layer and an overcoat layer made of a gas barrier property resin for filling the minute pores of the thin layer laminated in this order from the substrate film side.

3. A gas barrier film according to claim 1, wherein the thin layer is formed by a physical or chemical vapor phase method selected from the group consisting of a vapor deposition method, a sputtering method, an ion plating method and a plasma chemical vapor phase epitaxy method, or a liquid phase deposition method selected from the group consisting of a plating and a sol-gel method.

4. A gas barrier film according to claim 1, wherein the overcoat layer is made of a polysiloxane.

5. A gas barrier film according to claim 4, wherein the overcoat layer made of a polysiloxane is a coating layer of a coating material composition composed of at least a silane coupling agent having an organic functional group and a hydrolysis group, and a cross-linkable compound having an organic functional group reactive with the organic functional group of the silane coupling agent as raw materials.

6. A gas barrier film according to claim 1, wherein the rigidity of the substrate film is in a range of 0.5 N to 15 N.

7. A gas barrier film according to claim 1, wherein the gas barrier layer is laminated on the substrate film by two or more.

8. A gas barrier film according to claim 1, wherein the composite film is laminated by two or more.

9. Use of a substrate film in the gas barrier film application, wherein the substrate film has a (1) 80 ppm/°

C. or less coefficient of thermal expansion at 50°

C. to 150°

C. and/or a 10 ppm/% RH or less coefficient of humidity expansion at 25°

C., and a (2) 150C.°

or more glass transition temperature.

10. An use of a substrate film according to claim 9, wherein the rigidity of the substrate film is in a range of 0.5 N to 15 N.

11. A display with at least one surface of a display element covered with a gas barrier film, wherein the gas barrier film comprises a composite film provided with a gas barrier layer having a laminated structure including at least a metal oxide thin layer on a substrate film having a (1) 80 ppm/°

C. or less coefficient of thermal expansion at 50°

C. to 150°

C. and/or a 10 ppm/% RH or less coefficient of humidity expansion at 25°

C., and a (2) 150C.°

or more glass transition temperature.

12. A display according to claim 11, wherein the gas barrier film is laminated on the both surfaces of the display element.

13. A display according to claim 11, wherein the display element is sealed by the gas barrier film.

14. A display according to claim 11, wherein the gas barrier film forms a substrate of at least on the observer side of the display element.

15. A display according to claim 11, wherein the display element is a liquid crystal display panel or an organic EL element.