US4880475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making stable optically transmissive conductors, including electrodes for electroluminescent devices
Assignee: GIMMEL GERALD K PERSONAL REPRESENTATIVE OF ESTATE OF JOSEPH LINDMAYER
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Filing: 1988-03-14
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Granted: 1989-11-14
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Expires: 2008-03-14
Abstract
Abstract Disclosed are optically transmissive conductors, particulary 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
2026-10-29 08:19
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/26; H05B33/28
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
75 words
A method of making an optically transmissive electrode structure for an electroluminescent device, said method comprising: providing an optically transmissive substrate having an optically transmissive electrically conductive layer of indium tin oxide formed thereon; and electrically stabilizing the indium tin oxide layer by: coating the indium tin oxide layer with a metal selected from a group consisting of palladium and nickel in a layer less than 100 angstroms in thickness; and oxidizing the metal layer.
Claim 2
Independent Claim
75 words
A method of making an optically transmissive electrode structure for an electroluminescent device, said method comprising: providing an optically transmissive substrate having an optically transmissive electrically conductive layer of indium tin oxide formed thereon; and electrically stabilizing the indium tin oxide layer by: coating the indium tin oxide layer with a metal selected from a group consisting of palladium and nickel in a layer less than 100 angstroms in thickness; and oxidizing the metal layer.
Claim 3
Dependent Claim
26 words
A method in accordance with claim 1, wherein the step of oxidizing the metal layer comprises heating to approximately 500° C. in an atmosphere including oxygen.
Claim 4
Dependent Claim
30 words
A method in accordance with claim 1, which comprises coating the indium tin oxide layer with said metal in a layer having a thickness of from 30 to 50 angstroms.
Claim 5
Dependent Claim
32 words
A method in accordance with claim 1, which comprises providing an optically transmissive substrate having an optically transmissive electrically conductive indium tin oxide layer less than 100 angstroms in thickness formed thereon.
Claim 6
Dependent Claim
32 words
A method in accordance with claim 2, which comprises providing an optically transmissive substrate having an optically transmissive electrically conductive indium tin oxide layer less than 100 angstroms in thickness formed thereon.
Claim 7
Independent Claim
71 words
A method of making an optically transmissive conductor structure, said method comprising: providing an optically transmissive substrate having an optically transmissive electrically conductive layer of indium tin oxide formed thereon; and electrically stabilizing the indium tin oxide layer by: coating the indium tin oxide layer with a metal selected from a group consisting of palladium and nickel in a layer less than 100 angstroms in thickness; and oxidizing the metal layer.
Claim 8
Independent Claim
71 words
A method of making an optically transmissive conductor structure, said method comprising: providing an optically transmissive substrate having an optically transmissive electrically conductive layer of indium tin oxide formed thereon; and electrically stabilizing the indium tin oxide layer by: coating the indium tin oxide layer with a metal selected from a group consisting of palladium and nickel in a layer less than 100 angstroms in thickness; and oxidizing the metal layer.
Claim 9
Dependent Claim
26 words
A method in accordance with claim 6, wherein the step of oxidizing the metal layer comprises heating to approximately 500° C. in an atmosphere including oxygen.
Claim 10
Dependent Claim
32 words
A method in accordance with claim 6, which comprises providing an optically transmissive substrate having an optically transmissive electrically conductive indium tin oxide layer less than 100 angstroms in thickness formed thereon.
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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) | 1992-11-13 | 1993-05-15 | 1993-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-13 | 1997-05-15 | 1997-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-13 | 2001-05-15 | 2001-11-14 | $7700.00 | Window Closed / Lapsed |