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Patent US4737684A successfully refreshed from Google Patents.
US4737684A
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Thin film EL element having a crystal-orientable ZnO sublayer for a light-emitting layer
Assignee: Murata Manufacturing Co Ltd
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Filing: 1986-02-10
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Granted: 1988-04-12
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Expires: 2006-02-10
Abstract
Abstract A thin film EL element comprises a substrate, an electrode formed on the substrate, a ZnO insulation layer which is formed on the electrode and which has crystalline orientability, a light emitting layer formed on the ZnO insulation layer having crystallinity, and a second electrode formed on the light emitting layer. The ZnO insulation layer having crystalline orientability, is formed as a sublayer for the light emitting layer, and is made of a material having its c-axis oriented perpendicular to the substrate.
Inventors
- 👤 Hiroyuki Seto
- 👤 Katsuhiko Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:42
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/14; H05B33/145; H05B33/22; H05B33/26; H05B33/28
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
56 words
A thin film EL element comprising: a substrate, a transparent electrode, a light emitting layer, and as a sublayer for said light emitting layer, a crystal-orientable ZnO layer with its c-axis oriented perpendicular to the substrate, said light emitting layer being formed on said ZnO layer with a crystallinity corresponding to that of said ZnO layer.
Claim 2
Dependent Claim
56 words
A thin film EL element comprising: a substrate, a transparent electrode, a light emitting layer, and as a sublayer for said light emitting layer, a crystal-orientable ZnO layer with its c-axis oriented perpendicular to the substrate, said light emitting layer being formed on said ZnO layer with a crystallinity corresponding to that of said ZnO layer.
Claim 3
Dependent Claim
18 words
A thin film EL element as set forth in claim 1, wherein said crystal-orientable ZnO layer is insulative.
Claim 4
Dependent Claim
19 words
A thin film EL element as set forth in claim 1 wherein said crystal-orientable ZnO layer is electrically conductive.
Claim 5
Dependent Claim
30 words
A thin film EL element as set forth in claim 1, wherein said crystal-orientable ZnO layer is electrically conductive, at least part of said ZnO layer forming said transparent electrode.
Claim 6
Dependent Claim
18 words
A thin film EL element as set forth in claim 1, wherein said substrate is a light-permeable substrate.
Claim 7
Dependent Claim
64 words
A thin film EL element comprising: a substrate, a transparent electrode formed on said substrate, a ZnO insulation layer formed on said transparent electrode which ZnO insulation layer is transparent and has crystalline orientability, a light emitting layer formed on said ZnO insulation layer with crystallinity corresponding to that of said ZnO insulation layer, and a second electrode formed on said light emitting layer.
Claim 8
Dependent Claim
64 words
A thin film EL element comprising: a substrate, a transparent electrode formed on said substrate, a ZnO insulation layer formed on said transparent electrode which ZnO insulation layer is transparent and has crystalline orientability, a light emitting layer formed on said ZnO insulation layer with crystallinity corresponding to that of said ZnO insulation layer, and a second electrode formed on said light emitting layer.
Claim 9
Dependent Claim
26 words
A thin film EL element as set forth in claim 6, wherein an insulation layer is formed between said light emitting layer and said second electrode.
Claim 10
Dependent Claim
18 words
A thin film EL element as set forth in claim 6, wherein said substrate is a light-permeable substrate.
Claim 11
Dependent Claim
44 words
A thin film EL element comprising: a substrate, a crystal-orientable ZnO electrode formed on said substrate, a light emitting layer formed on said ZnO electrode with crystallinity corresponding to that of said ZnO electrode, and a second electrode formed on said light emitting layer.
Claim 12
Dependent Claim
44 words
A thin film EL element comprising: a substrate, a crystal-orientable ZnO electrode formed on said substrate, a light emitting layer formed on said ZnO electrode with crystallinity corresponding to that of said ZnO electrode, and a second electrode formed on said light emitting layer.
Claim 13
Dependent Claim
67 words
A thin film EL element comprising: a substrate, a transparent electrode formed on said substrate, a ZnO insulation layer formed on said transparent electrode which ZnO insulation layer is transparent and has crystalline orientability, a light emitting layer formed on said ZnO insulation layer, a second electrode formed on said light emitting layer; and an insulating layer formed between said transparent electrode and said ZnO insulation layer.
Claim 14
Dependent Claim
67 words
A thin film EL element comprising: a substrate, a transparent electrode formed on said substrate, a ZnO insulation layer formed on said transparent electrode which ZnO insulation layer is transparent and has crystalline orientability, a light emitting layer formed on said ZnO insulation layer, a second electrode formed on said light emitting layer; and an insulating layer formed between said transparent electrode and said ZnO insulation layer.
Claim 15
Dependent Claim
52 words
A thin film EL element comprising: a substrate; a crystal-orientable ZnO electrode formed on said substrate, a light emitting layer formed on said ZnO electrode, a second electrode formed on said light emitting layer; and a crystal orientable ZnO insulation layer formed between said crystal-orientable ZnO electrode and said light emitting layer.
Claim 16
Dependent Claim
52 words
A thin film EL element comprising: a substrate; a crystal-orientable ZnO electrode formed on said substrate, a light emitting layer formed on said ZnO electrode, a second electrode formed on said light emitting layer; and a crystal orientable ZnO insulation layer formed between said crystal-orientable ZnO electrode and said light emitting layer.
Claim 17
Dependent Claim
24 words
A thin film EL element as set forth in claim 11, wherein said crystal-orientable ZnO insulation layer is made of ZnO doped with Li.
Claim 18
Dependent Claim
23 words
A thin film EL element as set forth in claim 11, wherein said crystal-orientable ZnO electrode is made of ZnO doped with Al.
Claim 19
Dependent Claim
48 words
A thin EL element comprising: a substrate; a crystal-orientable ZnO electrode formed on said substrate, a light emitting layer formed on said ZnO electrode, a second electrode formed on said light emitting layer; and a crystal-orientable ZnO insulation layer formed between said substrate and said crystal-orientable ZnO electrode.
Claim 20
Dependent Claim
48 words
A thin EL element comprising: a substrate; a crystal-orientable ZnO electrode formed on said substrate, a light emitting layer formed on said ZnO electrode, a second electrode formed on said light emitting layer; and a crystal-orientable ZnO insulation layer formed between said substrate and said crystal-orientable ZnO electrode.
Claim 21
Dependent Claim
49 words
A thin film EL element comprising: a substrate; a crystal-orientable ZnO electrode formed on said substrate, wherein said crystal-orientable ZnO electrode is made of ZnO doped with a modifying agent, a light emitting layer formed on said ZnO electrode, and a second electrode formed on said light emitting layer.
Claim 22
Dependent Claim
49 words
A thin film EL element comprising: a substrate; a crystal-orientable ZnO electrode formed on said substrate, wherein said crystal-orientable ZnO electrode is made of ZnO doped with a modifying agent, a light emitting layer formed on said ZnO electrode, and a second electrode formed on said light emitting layer.
Claim 23
Dependent Claim
31 words
A thin film EL element as set forth in claim 15 wherein said modifying agent is one or more of the elements selected from the class consisting of Li and Al.
Claim 24
Dependent Claim
50 words
A thin film EL element comprising: a substrate, a transparent electrode, a light emitting layer, and as a sublayer for said light emitting layer, a crystal-orientable ZnO layer with its c-axis oriented perpendicular to the substrate; wherein said ZnO layer is insulative and is made of ZnO doped with Li.
Claim 25
Dependent Claim
50 words
A thin film EL element comprising: a substrate, a transparent electrode, a light emitting layer, and as a sublayer for said light emitting layer, a crystal-orientable ZnO layer with its c-axis oriented perpendicular to the substrate; wherein said ZnO layer is insulative and is made of ZnO doped with Li.
Claim 26
Dependent Claim
67 words
A thin film EL element comprising: a substrate, a transparent electrode formed on said substrate, a ZnO insulation layer formed on said transparent electrode which ZnO insulation layer is transparent and has crystalline orientability, wherein said crystal-orientable ZnO insulation layer is made of ZnO doped with Li, a light emitting layer formed on said ZnO insulation layer, and a second electrode formed on said light emitting layer.
Claim 27
Dependent Claim
67 words
A thin film EL element comprising: a substrate, a transparent electrode formed on said substrate, a ZnO insulation layer formed on said transparent electrode which ZnO insulation layer is transparent and has crystalline orientability, wherein said crystal-orientable ZnO insulation layer is made of ZnO doped with Li, a light emitting layer formed on said ZnO insulation layer, and a second electrode formed on said light emitting layer.
Claim 28
Dependent Claim
51 words
A thin film EL element comprising: a substrate, a transparent electrode, a light emitting layer, and as a sublayer for said light emitting layer, a crystal-orientable ZnO layer with its c-axis oriented perpendicular to the substrate; wherein said ZnO layer is electrically conductive and is made of ZnO doped with Al.
Claim 29
Dependent Claim
51 words
A thin film EL element comprising: a substrate, a transparent electrode, a light emitting layer, and as a sublayer for said light emitting layer, a crystal-orientable ZnO layer with its c-axis oriented perpendicular to the substrate; wherein said ZnO layer is electrically conductive and is made of ZnO doped with Al.
Claim 30
Dependent Claim
47 words
A thin film EL element comprising: a substrate; a crystal-orientable ZnO electrode formed on said substrate, wherein said crystal-orientable ZnO electrode is made of ZnO doped with Al, a light emitting layer formed on said ZnO electrode, and a second electrode formed on said light emitting layer.
Claim 31
Dependent Claim
47 words
A thin film EL element comprising: a substrate; a crystal-orientable ZnO electrode formed on said substrate, wherein said crystal-orientable ZnO electrode is made of ZnO doped with Al, a light emitting layer formed on said ZnO electrode, and a second electrode formed on said light emitting layer.
References Cited (Backward Citations)
US3420763A
Cited
US4140937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-12 | 1991-10-12 | 1992-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-12 | 1995-10-12 | 1996-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-12 | 1999-10-12 | 2000-04-12 | $7700.00 | Window Closed / Lapsed |