US5008732A
Expired / Lapsed
US
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Thin film two terminal element
Assignee: Benhov GmbH LLC
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Filing: 1989-11-28
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Granted: 1991-04-16
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Expires: 2009-11-28
Abstract
Abstract A thin film two terminal element comprises a lower metallic electrode disposed on an insulating substrate; an insulating film disposed on the insulating substrate and formed by a hard carbon film including at least one of amorphous and microcrystal properties with carbon and hydrogen atoms as a main structure forming element; and an upper metallic electrode disposed on the insulating substrate and formed by a metal having a standard free energy in the production of an oxide at a room temperature equal to or greater than that in the production of H 2 O or CO 2 . The lower metallic electrode is disposed to partially overlap a transparent electrode and is formed by a metal having a standard electrode potential in an aqueous solution equal to or higher than that of the transparent electrode.
Inventors
- 👤 Hitoshi Kondo
- 👤 Eiichi Ohta
- 👤 Yuji Kimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:42
CPC Classifications
H; H10; H10N; H10N70/00; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362; G02F1/1365
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
142 words
A thin film two terminal element, comprising: an insulating substrate; a transparent electrode disposed on the insulating substrate; a lower metallic electrode disposed on the insulating substrate so as to partially overlap the transparent electrode and formed by a metal having a standard electrode potential in an aqueous solution equal to or higher than that of the transparent electrode; an insulating film disposed on the lower metallic electrode and formed by a hard carbon film including at least one of amorphous and microcrystal properties with carbon and hydrogen atoms as a main structure forming element; and an upper metallic electrode disposed on the insulating film and formed by a metal having a standard free energy in the production of an oxide at a room temperature equal to or greater than that in the production of H 2 O or CO 2 .
Claim 2
Dependent Claim
142 words
A thin film two terminal element, comprising: an insulating substrate; a transparent electrode disposed on the insulating substrate; a lower metallic electrode disposed on the insulating substrate so as to partially overlap the transparent electrode and formed by a metal having a standard electrode potential in an aqueous solution equal to or higher than that of the transparent electrode; an insulating film disposed on the lower metallic electrode and formed by a hard carbon film including at least one of amorphous and microcrystal properties with carbon and hydrogen atoms as a main structure forming element; and an upper metallic electrode disposed on the insulating film and formed by a metal having a standard free energy in the production of an oxide at a room temperature equal to or greater than that in the production of H 2 O or CO 2 .
Claim 3
Dependent Claim
25 words
A thin film two terminal element according to claim 1, wherein said terminal element has preferable nonlinearity characteristics in operation with a good symmetric property.
Claim 4
Dependent Claim
27 words
A thin film two terminal element according to claim 2, wherein said terminal element has a small change in characteristics in operation with the passage of time.
Claim 5
Dependent Claim
26 words
A thin film two terminal element according to claim 1, wherein said terminal element is used as a switching element of a liquid crystal display device.
References Cited (Backward Citations)
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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) | 1994-04-15 | 1994-10-15 | 1995-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-15 | 1998-10-15 | 1999-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-15 | 2002-10-15 | 2003-04-16 | $7700.00 | Window Closed / Lapsed |