US4699469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal display
Assignee: International Business Machines Corp
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Filing: 1985-04-17
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Granted: 1987-10-13
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Expires: 2005-04-17
Abstract
Abstract A high content LCD includes, a glass plate; a polysilicon deposited substrate supporting a matrix of electrodes; each of the electrodes defining a picture element (pel) in the LCD; a liquid crystal material interposed between the glass plate and the substrate; a plurality of FET devices, there being one or more FET device associated with each of the electrodes; and means for selectively actuating the FET devices to display an image on the LCD.
Inventors
- 👤 Thor A. Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:07
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362; G02F1/136277; G09; G09G; G09G3/00; G09G3/20; G09G3/34; G09G3/36; G09G3/3611; G09G3/3648; G09G2300/00; G09G2300/08; G09G2300/0809; G09G2300/0814; G09G2300/0842
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
101 words
A high content liquid crystal display device (LDC), comprising: a glass plate; a polysilicon deposited substrate supporting a matrix of electrodes; each of said electrode defining a picture element (pel) in said LCD: a liquid crystal material interposed between said glass plate and said substrate; a plurality of electronically alterable FET devices, there being one or more of said electronically alterable FET devices associated with each of said electrodes, each said electronically alterable FET device comprising internal data storage and pel signal selection means; and means for selectively actuating said electronically alterable FET devices to display an image on said LCD.
Claim 2
Dependent Claim
101 words
A high content liquid crystal display device (LDC), comprising: a glass plate; a polysilicon deposited substrate supporting a matrix of electrodes; each of said electrode defining a picture element (pel) in said LCD: a liquid crystal material interposed between said glass plate and said substrate; a plurality of electronically alterable FET devices, there being one or more of said electronically alterable FET devices associated with each of said electrodes, each said electronically alterable FET device comprising internal data storage and pel signal selection means; and means for selectively actuating said electronically alterable FET devices to display an image on said LCD.
Claim 3
Dependent Claim
20 words
A high content liquid crystal display device (LCD) according to claim 1, wherein said substrate comprises a fused quartz material.
Claim 4
Dependent Claim
17 words
A high content liquid crystal display device (LCD) according to claim 1, wherein said substrate comprises alumina.
Claim 5
Dependent Claim
24 words
A high content liquid crystal display device (LCD) according to claim 1, wherein said liquid crystal material comprises a twisted nematic liquid crystal material.
Claim 6
Dependent Claim
24 words
A high content liquid crystal display device (LCD) according to claim 1, wherein said electronically alterable FET devices comprise a dual electron injector structure.
Claim 7
Dependent Claim
23 words
A high content liquid crystal display device (LCD) according to claim 5, wherein said electronically alterable FET devices comprise a deposited polysilicon material.
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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) | 1990-10-12 | 1991-04-13 | 1991-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-12 | 1995-04-13 | 1995-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-12 | 1999-04-13 | 1999-10-13 | $7700.00 | Window Closed / Lapsed |