Claims
- 1. In a thin film electroluminescent (EL) panel comprising a light permeable base plate, a thin film EL element formed on the base plate and a moisture-proof sheet covered thereon, an improvement comprising a moisture-absorption sheet disposed between said thin film EL element and said moisture-proof sheet, wherein said moisture-absorption sheet comprises an organic polymer sheet with silica gel powder dispersed therein at a surface density of 10-500 g/m.sup.2.
- 2. The thin film EL panel according to claim 1 wherein said moisture absorption sheet has a thickness of 0.01 to 1 mm.
- 3. The thin film EL panel according to claim 1 wherein said moisture absorption sheet is colored black.
- 4. The thin film EL panel according to claim 1 wherein said thin film EL element comprises a lower transparent electrode formed on said base plate, a lower-insulation layer formed on said lower transparent electrode, an electroluminescent layer formed on said lower insulation layer, an upper insulation layer formed on said electroluminescent layer and an upper electrode formed on said upper insulation layer.
- 5. The thin film EL panel according to claim 1 wherein said thin film EL element comprises a lower transparent electrode formed on said base plate, an electroluminescent layer formed on said lower transparent electrode, an upper insulation layer formed on said electroluminescent layer and an upper electrode formed on said upper insulation layer.
- 6. The thin film EL panel according to claim 1 wherein said thin film EL element comprises a lower transparent electrode formed on said base plate, a lower insulation layer formed on said lower transparent electrode, an electroluminescent layer formed on said lower insulation layer and an upper electrode formed on said electroluminescent layer.
- 7. The thin film EL panel according to claim 1 wherein said moisture-proof sheet comprises a metal film disposed between two organic films.
- 8. The thin film EL panel according to claim 10 wherein said organic films comprise polyester films and said metal film comprises aluminum.
- 9. The thin film EL panel according to claim 10 wherein said organic films and said metal film of said moisture-proof sheet each have a thickness of 5 to 50 .mu.m.
- 10. The thin film EL panel according to claim 1 wherein said silica gel powder has a particle size of 1-4 microns.
- 11. In a thin film EL panel comprising a light permeable base plate, a thin film EL element formed on the base plate and a moisture-proof sheet covered thereon, an improvement comprising a moisture-absorption layer formed on the inside surface of the moisture-proof sheet by coating thereon silica gel powder having moisture absorption properties at a surface density of 10 to 500 g/m.sup.2.
- 12. The thin film EL panel according to claim 3 wherein said moisture absorption layer is colored black.
- 13. The thin film EL panel according to claim 3 wherein said moisture-proof sheet comprises a metal film disposed between two organic films.
- 14. The thin film EL panel according to claim 11 wherein said organic films comprise polyester films and said metal film comprises aluminum.
- 15. The thin film EL panel according to claim 11 wherein said organic films and said metal film of said moisture-proof sheet each have a thickness of 5 to 50 .mu.m.
- 16. The thin film EL panel according to claim 3 wherein said silica gel powder has a particle size of 1-4 microns.
Priority Claims (1)
Number |
Date |
Country |
Kind |
63-175569 |
Jul 1988 |
JPX |
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FIELD OF THE INVENTION
This application is a continuation of application Ser. No. 07/379,250 filed on Jul. 13, 1989 now abandoned.
US Referenced Citations (5)
Foreign Referenced Citations (9)
Number |
Date |
Country |
0019715 |
Apr 1980 |
EPX |
3010164 |
Sep 1980 |
DEX |
1381497 |
Oct 1963 |
FRX |
36-290693 |
Dec 1961 |
JPX |
0072197 |
Jun 1977 |
JPX |
0083196 |
Jun 1980 |
JPX |
63-057230 |
Mar 1988 |
JPX |
8908919 |
Sep 1989 |
WOX |
1501878 |
Feb 1978 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
379250 |
Jul 1989 |
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