Patent US5009490A successfully refreshed from Google Patents.
US5009490A
Expired / Lapsed
US
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Photo-conductive liquid crystal light valve
Assignee: Pioneer Corp
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Filing: 1989-06-09
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Granted: 1991-04-23
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Expires: 2009-06-09
Abstract
Abstract A photo-conductive liquid crystal display in which the liquid crystal light valve and the electroluminescence element are disposed integrally with each other. The photo-conductive liquid crystal light valve is arranged such that a pair of transparent electrodes are disposed on the outside of a lamination of a photo-conductive layer and a liquid crystal layer, and an electroluminescence element is disposed on the outside of the transparent electrode which is disposed on the writing side of the device.
Inventors
- 👤 Tomomitsu Kouno
- 👤 Hideki Hatano
- 👤 Takashi Yamaji
- 👤 Sakashi Ootaki
- 👤 Masami Nishida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:15
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/135
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
121 words
A photo-conductive liquid crystal light valve comprising: a lamination of a photo-conductive layer and a liquid crystal layer; a pair of transparent electrodes, one electrode of said pair of electrodes being disposed on the outside of said photo-conductive layer and another electrode of said pair of electrodes being disposed on the outside of said liquid crystal layer respectively; and an electroluminescence element disposed on the outside of one of said electrodes of said pair of electrodes, said one electrode being on a writing side, said electroluminescence element includes a first transparent insulation layer, a transparent electrode, a second transparent insulation layer, a zinc sulfide layer, a third transparent insulation layer, and a metal electrode which are laminated in the stated order.
Claim 2
Dependent Claim
121 words
A photo-conductive liquid crystal light valve comprising: a lamination of a photo-conductive layer and a liquid crystal layer; a pair of transparent electrodes, one electrode of said pair of electrodes being disposed on the outside of said photo-conductive layer and another electrode of said pair of electrodes being disposed on the outside of said liquid crystal layer respectively; and an electroluminescence element disposed on the outside of one of said electrodes of said pair of electrodes, said one electrode being on a writing side, said electroluminescence element includes a first transparent insulation layer, a transparent electrode, a second transparent insulation layer, a zinc sulfide layer, a third transparent insulation layer, and a metal electrode which are laminated in the stated order.
Claim 3
Dependent Claim
39 words
A photo-conductive liquid crystal light valve according to claim 1, wherein said transparent electrode included within said electroluminescence element is made by a plurality of strip-like electrodes and said metal electrode is made by a plurality of strip-like electrodes.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-22 | 1994-10-22 | 1995-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-22 | 1998-10-22 | 1999-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-22 | 2002-10-22 | 2003-04-23 | $7700.00 | Window Closed / Lapsed |