US5189405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin film electroluminescent panel
Assignee: Sharp Corp
•
Filing: 1991-12-23
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Granted: 1993-02-23
•
Expires: 2011-12-23
Abstract
Abstract A thin film electroluminescent panel includes a transparent substrate with an electroluminescent element formed on the substrate. There is a moisture proof sheet to cover the electroluminescent element. The moisture proof sheet includes a metal layer laminated between the two resin films. The periphery of the moisture proof sheet is adhered to the transparent substrate. There is a moisture proof sheet with a moisture absorbent powder thereon, located between the electroluminescent element and the moisture proof sheet. The combination prevents moisture from affecting the operation of the electroluminescent element and provides for stability.
Inventors
- 👤 Takuo Yamashita
- 👤 Takashi Ogura
- 👤 Hiroaki Nakaya
- 👤 Masaru Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:41
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/02; H05B33/04
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
104 words
A thin film electroluminescent panel comprising: a transparent substrate, a thin film electroluminescent element formed on the transparent substrate, a moisture-proof sheet formed of a metal film located between two resin films, covering the thin film electrolumnescent element, the periphery of the moisture-proof sheet being adhered to the transparent substrate, and a moisture absorption sheet of an organic polymer with dispersed powder of moisture absorbent properties, located on a plastic film, said moisture absorption sheet being located between the thin film electroluminescent element and the moisture-proof sheet, the plastic film being adhered planarly and in direct physical contact with the thin film electroluminescent element.
Claim 2
Dependent Claim
104 words
A thin film electroluminescent panel comprising: a transparent substrate, a thin film electroluminescent element formed on the transparent substrate, a moisture-proof sheet formed of a metal film located between two resin films, covering the thin film electrolumnescent element, the periphery of the moisture-proof sheet being adhered to the transparent substrate, and a moisture absorption sheet of an organic polymer with dispersed powder of moisture absorbent properties, located on a plastic film, said moisture absorption sheet being located between the thin film electroluminescent element and the moisture-proof sheet, the plastic film being adhered planarly and in direct physical contact with the thin film electroluminescent element.
Claim 3
Dependent Claim
18 words
The thin film electroluminescent panel according to claim 1, wherein the plastic film has a heat sealing property.
Claim 4
Dependent Claim
16 words
A thin film electroluminescent panel according to claim 2, wherein said plastic film has moisture-proof property.
Claim 5
Dependent Claim
17 words
A thin film electroluminescent panel according to claim 2, wherein said plastic film has gas barrier property.
Claim 6
Dependent Claim
28 words
A thin film electroluminescent panel according to claim 2, 3 or 4, wherein said plastic film is made of polyethylene, polypropylene, cellophane, polyester, polyvinyl chloride or polyvinylidene chloride.
Claim 7
Dependent Claim
124 words
A thin film electroluminescent panel comprising: a transparent substrate; a thin film electroluminescent element formed on the transparent substrate; a moisture-proof sheet formed of a metal film located between two resin films, covering the thin film electroluminescent element, the periphery of the moisture-proof sheet being adhered to the transparent substrate; a moisture absorption sheet of an organic polymer with dispersed powder of moisture absorbent properties, said moisture absorption sheet being arranged between the thin film electroluminescent element and the moisture-proof sheet being adhered planarly to the thin film electroluminescent element; and means in direct physical contact with said moisture absorption sheet and said thin film electroluminescent element for adhering said electroluminescent element and said moisture-absorption sheet closely in a planar orientation to each other.
Claim 8
Dependent Claim
124 words
A thin film electroluminescent panel comprising: a transparent substrate; a thin film electroluminescent element formed on the transparent substrate; a moisture-proof sheet formed of a metal film located between two resin films, covering the thin film electroluminescent element, the periphery of the moisture-proof sheet being adhered to the transparent substrate; a moisture absorption sheet of an organic polymer with dispersed powder of moisture absorbent properties, said moisture absorption sheet being arranged between the thin film electroluminescent element and the moisture-proof sheet being adhered planarly to the thin film electroluminescent element; and means in direct physical contact with said moisture absorption sheet and said thin film electroluminescent element for adhering said electroluminescent element and said moisture-absorption sheet closely in a planar orientation to each other.
Claim 9
Dependent Claim
34 words
The thin film electroluminescent panel according to claim 1, 2 or 6, wherein a surface of said moisture absorption sheet is black or almost black on the side of said thin film electroluminescent element.
Claim 10
Dependent Claim
30 words
The thin film electroluminescent panel according to claim 7, wherein a surface of said moisture-proof sheet is black or almost black on the side of said thin film electroluminescent element.
Claim 11
Dependent Claim
43 words
The thin film electroluminescent panel according to claim 6, wherein said means is a plastic film having a heat sealing property, so that the heat sealing film secures said electroluminescent element and said moisture absorption sheet closely in planar orientation to each other.
Claim 12
Dependent Claim
17 words
The thin film electroluminescent panel according to claim 9, wherein said plastic film has a moisture-proof property.
Claim 13
Dependent Claim
18 words
The thin film electroluminescent panel according to claim 9, wherein said plastic film has a gap barrier property.
Claim 14
Dependent Claim
24 words
The electroluminescent panel according to claim 6, wherein said means is selected from the group consisting of silicone resin, silicone compound or silicone grease.
Claim 15
Dependent Claim
15 words
The electroluminescent panel according to claim 1, wherein said electroluminescent panel is free of oil.
Claim 16
Dependent Claim
24 words
The thin film electroluminescent panel according to claim 1, wherein the moisture absorption sheet of organic polymer is adjacent to said moisture proof sheet.
Claim 17
Dependent Claim
15 words
The thin film electroluminescent panel according to claim 14, wherein said dispersed powder is silica.
Claim 18
Dependent Claim
118 words
A thin film electroluminescent panel comprising: a thin film electroluminescent element formed on and in direct contact with a transparent substrate, a plastic film having a first surface and a second surface, the first surface being adhered to and in direct physical contact with the thin film electroluminescent element, a moisture adsorption sheet of an organic polymer with dispersed powder of moisture absorbent properties, the moisture adsorption sheet located on the second surface of said plastic film, and a moisture-proof sheet formed of a metal film located between two resin films, covering the thin film electroluminescent element, and adjacent said moisture adsorption sheet of organic polymer, the periphery of the moisture-proof sheet being adhered to the transparent substrate.
Claim 19
Dependent Claim
118 words
A thin film electroluminescent panel comprising: a thin film electroluminescent element formed on and in direct contact with a transparent substrate, a plastic film having a first surface and a second surface, the first surface being adhered to and in direct physical contact with the thin film electroluminescent element, a moisture adsorption sheet of an organic polymer with dispersed powder of moisture absorbent properties, the moisture adsorption sheet located on the second surface of said plastic film, and a moisture-proof sheet formed of a metal film located between two resin films, covering the thin film electroluminescent element, and adjacent said moisture adsorption sheet of organic polymer, the periphery of the moisture-proof sheet being adhered to the transparent substrate.
Claim 20
Dependent Claim
13 words
The electroluminescent panel according to claim 16, wherein said dispersed powder is silica.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-02-23 | 1996-08-24 | 1997-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-23 | 2000-08-24 | 2001-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-23 | 2004-08-24 | 2005-02-23 | $7700.00 | Window Closed / Lapsed |