US4767679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin film EL panel
Assignee: Alps Alpine Co Ltd
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Filing: 1987-08-17
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Granted: 1988-08-30
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Expires: 2007-08-17
Abstract
Abstract A thin film EL panel including at least a transparent electrode, an EL luminescent layer, an insulating layer and an opposite electrode laminated on a transparent insulating substrate, wherein the thin-film-formed side of the substrate is sealed by a moisture-proof film with a thermoplastic resin interposed between them.
Inventors
- 👤 Kazuhiko Kawachi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:03
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/02; H05B33/04; Y; Y10; Y10S; Y10S428/00; Y10S428/917
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
77 words
In a thin film EL panel including at least a transparent electrode, an EL luminescent layer, an insulating layer and an opposite electrode laminated on one side of a transparent insulating substrate, the improvement wherein said electrodes and layers of said thin film EL panel are encapsulated in an inner layer made of a thermoplastic resin, and sealed by an outer, moisture-proof film made of a metal laminate formed thereover having its periphery press-bonded to said substrate.
Claim 2
Dependent Claim
77 words
In a thin film EL panel including at least a transparent electrode, an EL luminescent layer, an insulating layer and an opposite electrode laminated on one side of a transparent insulating substrate, the improvement wherein said electrodes and layers of said thin film EL panel are encapsulated in an inner layer made of a thermoplastic resin, and sealed by an outer, moisture-proof film made of a metal laminate formed thereover having its periphery press-bonded to said substrate.
Claim 3
Dependent Claim
37 words
A thin film EL panel according to any of claim 1 wherein said thermoplastic resin is selected from ethylene=vinyl acetate copolymer, noryl, unsaturated polyester, vinylidene fluoride-6 propylene fluoride copolymer, low-density polyethylene, high-density polyethylene, vinylidene chloride and polypropylene.
References Cited (Backward Citations)
US3346758A
Cited
US4020389A
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US4593228A
Cited
US4647337A
Cited
EP0188881A1
Cited
JPS6183196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-30 | 1992-02-29 | 1992-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-30 | 1996-02-29 | 1996-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-30 | 2000-02-29 | 2000-08-30 | $7700.00 | Window Closed / Lapsed |