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US4748375A
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Stable optically transmissive conductors, including electrodes for electroluminescent devices, and methods for making
Assignee: GIMMEL GERALD K PERSONAL REPRESENTATIVE OF ESTATE OF JOSEPH LINDMAYER
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Filing: 1985-12-27
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Granted: 1988-05-31
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Expires: 2005-12-27
Abstract
Abstract Disclosed are optically transmissive conductors, particularly resistive electrodes for optical devices such as electroluminescent lamps and displays, comprising a thin layer of indium tin oxide (ITO) stabilized by a layer of a metal oxide, such as palladium oxide or nickel oxide. In the disclosed method, a thin layer of conductive ITO is coated with a metal layer and then oxidized by heating in air to 500° C.
Inventors
- 👤 Joseph Lindmayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:55
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/26; H05B33/28
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
70 words
An electroluminescent device, comprising: an electroluminescent layer sandwiched between a pair of electrodes and separated from said electrodes by respective dielectric layers; at least one of said electrodes being optically transmissive and comprising a layer of indium tin oxide on an optically transmissive substrate; and a stabilizing layer comprising a metal oxide selected from a group consisting of palladium oxide and nickel oxide over said layer of indium tin oxide.
Claim 2
Dependent Claim
70 words
An electroluminescent device, comprising: an electroluminescent layer sandwiched between a pair of electrodes and separated from said electrodes by respective dielectric layers; at least one of said electrodes being optically transmissive and comprising a layer of indium tin oxide on an optically transmissive substrate; and a stabilizing layer comprising a metal oxide selected from a group consisting of palladium oxide and nickel oxide over said layer of indium tin oxide.
Claim 3
Dependent Claim
30 words
A device in accordance with claim 1, wherein said stabilizing layer is formed of an oxidized layer of a metal having a thickness less than 100 angstroms prior to oxidation.
Claim 4
Dependent Claim
27 words
A device is accordance with claim 2, wherein the thickness of the metal layer prior to oxidation is within the range of from 30 to 50 angstroms.
Claim 5
Dependent Claim
22 words
A device in accordance with claim 1, wherein said layer of indium tin oxide has a thickness of less than 100 angstroms.
Claim 6
Dependent Claim
14 words
A device in accordance with claim 1, wherein said optically transmissive substrate comprises glass.
Claim 7
Dependent Claim
39 words
An optically transmissive conductor, comprising: a layer of indium tin oxide on a substrate; and a stabilizing layer of metal oxide selected from a group consisting of palldium oxide and nickel oxide over said layer of indium tin oxide.
Claim 8
Dependent Claim
39 words
An optically transmissive conductor, comprising: a layer of indium tin oxide on a substrate; and a stabilizing layer of metal oxide selected from a group consisting of palldium oxide and nickel oxide over said layer of indium tin oxide.
Claim 9
Dependent Claim
31 words
A conductor structure in accordance with claim 6, wherein said stabilizing layer is formed of an oxidized layer of a metal having a thickness less than 100 angstroms prior to oxidation.
Claim 10
Dependent Claim
27 words
A conductor structure in accordance with claim 7, wherein the thickness of the metal prior to oxidation is within the range of from 30 to 50 angstroms.
Claim 11
Dependent Claim
23 words
A conductor structure in accordance with claim 6, wherein said layer of indium tin oxide has a thickness of less than 100 angstroms.
References Cited (Backward Citations)
US3522071A
Cited
US3927224A
Cited
US4201798A
Cited
US4263339A
Cited
US4416933A
Cited
US4418118A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-31 | 1991-11-30 | 1992-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-31 | 1995-11-30 | 1996-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-31 | 1999-11-30 | 2000-05-31 | $7700.00 | Window Closed / Lapsed |