US3716290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid-crystal display device
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1971-10-18
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Granted: 1973-02-13
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Expires: 1991-10-18
Abstract
Abstract AN ELECTROOPTICAL DISPLAY DEVICE COMPRISING A FILM OF LIQUID CRYSTALS BETWEEN TWO SYSTEMS OF ELECTRODES. ONE SYSTEM COMPRISES A PLURALITY OF INTEGRATED CIRCUITS FORMING A SUPPORTING LAYER ON A SUBSTRATE AND A PLURALITY OF FLAT METALLIC ELECTRODES DEPOSITED ON THE SUPPORTING LAYER, EACH ELECTRODE BEING CONNECTED ELECTRICALLY TO ONE CIRCUIT. THE OTHER SYSTEM COMPRISES A TRANSPARENT INSULATING PLATE PROVIDED ON ONE FACE WITH A UNIFORM COATING OF ELECTRICALLY CONDUCTIVE AND SEMI-TRANPARENT MATERIAL. D R A W I N G
Inventors
- 👤 J Borel
- 👤 J Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:37
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362; G02F1/136277
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |