Patent US4094582A successfully refreshed from Google Patents.
US4094582A
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Liquid crystal matrix display device with transistors
Assignee: RCA Corp
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Filing: 1976-10-18
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Granted: 1978-06-13
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Expires: 1996-10-18
Abstract
Abstract A field-effect transistor, made with liquid crystal material, is connected to each liquid crystal cell in a liquid crystal matrix display device. The transistors with the display, all made with liquid crystal material, are integrally constructed in one device.
Inventors
- 👤 Lawrence Alan Goodman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:50
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362; G02F1/1368
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
134 words
A liquid crystal display device comprising a first set of a plurality of elongated, spaced, parallel electrodes, a second set of a plurality of spaced electrodes coplanar with said first set of electrodes, a third set of a plurality of elongated, spaced parallel electrodes in a plane spaced from that of the first and second electrodes, the third set of electrodes extending substantially perpendicular to said first set of electrodes, with each of said third electrodes being opposite to at least one of the second electrodes, a liquid crystal material between the second set of electrodes and the third set of electrodes, and semiconducting material extending between and contacting each of the second electrodes and a first electrode and wherein the liquid crystal material extends across and contacts the semiconductor material forming a transistor.
Claim 2
Dependent Claim
134 words
A liquid crystal display device comprising a first set of a plurality of elongated, spaced, parallel electrodes, a second set of a plurality of spaced electrodes coplanar with said first set of electrodes, a third set of a plurality of elongated, spaced parallel electrodes in a plane spaced from that of the first and second electrodes, the third set of electrodes extending substantially perpendicular to said first set of electrodes, with each of said third electrodes being opposite to at least one of the second electrodes, a liquid crystal material between the second set of electrodes and the third set of electrodes, and semiconducting material extending between and contacting each of the second electrodes and a first electrode and wherein the liquid crystal material extends across and contacts the semiconductor material forming a transistor.
Claim 3
Dependent Claim
65 words
A liquid crystal display device in accordance with claim 1 including a pair of spaced substrates with one substrate being on a surface substantially parallel to and opposed to a surface of the other substrate, the first and second electrodes are on the opposed surface of one of the substrates and the third set of electrodes are on the opposed surface of the other substrate.
Claim 4
Dependent Claim
37 words
A liquid crystal display device in accordance with claim 2 in which the second set of electrodes are pads arranged in rows between and parallel to the first electrodes and in rows perpendicular to the first electrodes.
Claim 5
Dependent Claim
37 words
A liquid crystal display device in accordance with claim 3 in which each of the third electrodes extends across the semiconductor bodies which are connected to the second electrodes which are oppposite to the respective third electrode.
Claim 6
Dependent Claim
60 words
A liquid crystal display device in accordance with claim 4 including a fourth set of elongated, spaced parallel electrodes on the opposed surface of the one substrate with each of the fourth electrodes extending between one of the first electrodes and a row of the second electrodes and each of the semiconductor bodies extends over and contacts a fourth electrode.
Claim 7
Dependent Claim
51 words
A liquid crystal display device in accordance with claim 3 including a fourth set of elongated spaced parallel electrodes on the opposed surface of the other substrate, each of said fourth electrodes extending between and parallel to two of the third electrodes and extending across a plurality of the semiconductor bodies.
Claim 8
Dependent Claim
57 words
A liquid crystal display device in accordance with claim 6 in which each of the first electrodes has a plurality of arms extending perpendicularly therefrom with each arm being adjacent to but spaced from a separate one of the second electrodes, and the semiconductor bodies extend between the second electrodes and the arms of the first electrodes.
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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) | 1981-06-12 | 1981-12-12 | 1982-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-12 | 1985-12-12 | 1986-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-12 | 1989-12-12 | 1990-06-13 | $7700.00 | Window Closed / Lapsed |