Patent EP0500382A2 successfully refreshed from Google Patents.
EP0500382A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Moisture proof thin film electroluminescent panel
Assignee: Sharp Corp
•
Filing: 1992-02-21
•
Granted: —
•
Expires: 2012-02-21
Abstract
Abstract A thin film electroluminescent panel in which a thin film electroluminescent device formed on a transparent substrate is covered with a black silicone resin layer at back side thereof and further covered by a moistureproof sheet the periphery of which is adhered to that of the substrate. Desirably, a moisture absorber is arranged between the black silicone resin layer and the moistureproof sheet. Further, the moistureproof sheet has at least one small hole pierced therein for dehydrating the inner space of the EL panel which is scaled after dehydration.
Inventors
- 👤 Takuo Yamashita
- 👤 Takashi Ogura
- 👤 Masaru Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 14:56
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/02; H05B33/04; H05B33/12
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
60 words
Thin film electroluminescent panel comprising a transparent substrate and a thin film electroluminescent device formed on said transparent substrate being characterized in that the back surface of said thin film electroluminescent device is coated with black silicone resin and that the back surface of said thin film electroluminescent device is covered over the black silicone coating by a moistureproof sheet.
Claim 2
Dependent Claim
60 words
Thin film electroluminescent panel comprising a transparent substrate and a thin film electroluminescent device formed on said transparent substrate being characterized in that the back surface of said thin film electroluminescent device is coated with black silicone resin and that the back surface of said thin film electroluminescent device is covered over the black silicone coating by a moistureproof sheet.
Claim 3
Dependent Claim
30 words
The thin film electroluminescent panel as claimed in claim 1 being characterized further in that a sheet-like moisture absorber is arranged between said black silicone coating and said moistureproof sheet.
Claim 4
Dependent Claim
21 words
The thin film electroluminescent panel as claimed in claim 1 in which said black silicone resin is hardened by addition reaction.
Claim 5
Dependent Claim
36 words
The thin film electroluminescent panel as claimed in claim 1 wherein said black silicone resin is hardened to a hardness of twenty or less when measured according to a testing method according to JIS C 2123.
Claim 6
Dependent Claim
56 words
The thin film electroluminescent panel as claimed in claim 1 being further characterized in that said moisture-proof sheet has at least one small hole pierced therein through which the inner space of said panel is dehydrated and that said at least one small hole is sealed by a sealing means after dehydration of said inner space.
Claim 7
Dependent Claim
68 words
Thin film electroluminescent panel comprising a translucent substrate and a thin film electroluminescent device formed on said translucent substrate being characterized in that the back surface of said thin film electroluminescent device is coated with black silicone resin wherein powder-like or pellet-like moisture absorber is dispersed and that the back surface of said thin film electroluminescent device is covered over the black silicone coating by a moistureproof sheet.
Claim 8
Dependent Claim
68 words
Thin film electroluminescent panel comprising a translucent substrate and a thin film electroluminescent device formed on said translucent substrate being characterized in that the back surface of said thin film electroluminescent device is coated with black silicone resin wherein powder-like or pellet-like moisture absorber is dispersed and that the back surface of said thin film electroluminescent device is covered over the black silicone coating by a moistureproof sheet.
Claim 9
Dependent Claim
56 words
The thin film electroliminescent panel as claimed in claim 6 being further characterized in that said moisture-proof sheet has at least one small hole pierced therein through which the inner space of said panel is dehydrated and that said at least one small hole is sealed by a sealing means after dehydration of said inner space.
Claim 10
Dependent Claim
72 words
Thin film electroluminescent panel comprising a transparent substrate and a thin film electroluminescent device formed on said transparent substrate being characterized in that the back surface of said thin film electroluminescent device is coated with black silicone resin, that powder-like or pellet-like moisture absorber is arranged on said black silicone coating and that the back surface of said thin film electroluminescent device is covered over said mois- tureabsorber by a moistureproof sheet.
Claim 11
Dependent Claim
72 words
Thin film electroluminescent panel comprising a transparent substrate and a thin film electroluminescent device formed on said transparent substrate being characterized in that the back surface of said thin film electroluminescent device is coated with black silicone resin, that powder-like or pellet-like moisture absorber is arranged on said black silicone coating and that the back surface of said thin film electroluminescent device is covered over said mois- tureabsorber by a moistureproof sheet.
Claim 12
Dependent Claim
24 words
The thin film electroluminescent panel as claimed in claim 8 in which said powder-like or pellet-like moisture absorber is contained in a gaspermeable sack.
Claim 13
Dependent Claim
56 words
The thin film electroliminescent panel as claimed in claim 8 being further characterized in that said moisture-proof sheet has at least one small hole pierced therein through which the inner space of said panel is dehydrated and that said at least one small hole is sealed by a sealing means after dehydration of said inner space.
Claim 14
Dependent Claim
58 words
A display apparatus comprising a transparent substrate and a thin film electroluminescent panel formed on said substrate, characterized by a protective seal structure for said panel comprising a coating which envelopes the exposed surface of said panel and a flexible moisture-proof sheet which covers said coating and is sealed to said substrate around the periphery of said panel.
Claim 15
Dependent Claim
58 words
A display apparatus comprising a transparent substrate and a thin film electroluminescent panel formed on said substrate, characterized by a protective seal structure for said panel comprising a coating which envelopes the exposed surface of said panel and a flexible moisture-proof sheet which covers said coating and is sealed to said substrate around the periphery of said panel.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.