US4295712A
Expired / Lapsed
US
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Liquid crystal display device
Assignee: Canon Inc
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Filing: 1979-07-25
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Granted: 1981-10-20
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Expires: 1999-07-25
Abstract
Abstract A liquid crystal display device of a type, wherein a pair of flexible, transparent plates, each having on one surface thereof a transparent electrode to form thereon desired characters, patterns, and so forth, are arranged with the transparent electrodes opposed to each other, a spacer to maintain a constant space gap between the opposed transparent electrodes is provided between the pair of flexible, transparent plates uniformly over the entire surface thereof, and liquid crystal is sealed in a space defined between the two electrodes the distance of which is maintained constant by the spacer, and the spacer has a dot or linear structure.
Inventors
- 👤 Masumi Ishiwatari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:16
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1339; G02F1/13394; G02F1/133377
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
49 words
A liquid crystal display device comprising: a pair of flexible, transparent plates each having a transparent electrode on one surface; and a spacer interposed between said plate surfaces for maintaining a constant space gap therebetween, said spacer being a honeycomb-shaped structure which extends over the entire display device surface.
Claim 2
Dependent Claim
49 words
A liquid crystal display device comprising: a pair of flexible, transparent plates each having a transparent electrode on one surface; and a spacer interposed between said plate surfaces for maintaining a constant space gap therebetween, said spacer being a honeycomb-shaped structure which extends over the entire display device surface.
Claim 3
Dependent Claim
22 words
A liquid crystal device according to claim 1, wherein a flexible deflecting plate is provided outside each of said flexible, transparent plates.
Claim 4
Dependent Claim
22 words
A liquid crystal device according to claim 1, wherein a flexible reflecting plate is provided outside one of said flexible, transparent plates.
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) | 1984-10-19 | 1985-04-20 | 1985-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-19 | 1989-04-20 | 1989-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-19 | 1993-04-20 | 1993-10-20 | $7700.00 | Window Closed / Lapsed |