US3774989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pattern display apparatus
Assignee: Noritake Itron Corp
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Filing: 1972-10-20
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Granted: 1973-11-27
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Expires: 1992-10-20
Abstract
Abstract In a pattern display apparatus of the class comprising a pair of insulator substrates, one of which being transparent, a plurality of row and column electrodes which are disposed in a matrix between the insulator substrates, and a liquid crystal filled in the space between the insulator substrates, the row and column electrodes are provided with a plurality of parallel interleaved teeth at respective cross-points therebetween.
Inventors
- 👤 I Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:58
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1343; G02F1/134309; G02F1/134363; G02F2201/00; G02F2201/12; G02F2201/123; G02F2201/124
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
78 words
In a pattern display apparatus of the class comprising a pair of insulator substrates, one of which being transparent, a plurality of row electrodes and a plurality of column electrodes which are disposed in a matrix between said pair of insulator substrates, and a liquid crystal filled in the space between said pair of insulator substrates, the improvement which comprises a plurality of parallel interleaved teeth provided for said row electrodes and column electrodes at respective cross-points therebetween.
Claim 2
Dependent Claim
78 words
In a pattern display apparatus of the class comprising a pair of insulator substrates, one of which being transparent, a plurality of row electrodes and a plurality of column electrodes which are disposed in a matrix between said pair of insulator substrates, and a liquid crystal filled in the space between said pair of insulator substrates, the improvement which comprises a plurality of parallel interleaved teeth provided for said row electrodes and column electrodes at respective cross-points therebetween.
Claim 3
Dependent Claim
56 words
The pattern display apparatus according to claim 1 wherein each one of said row or column electrodes is provided with a gap at the cross-point and each column or row electrode is extended through said gap and two sections of each electrode on the opposite sides of said gap is electrically interconnected by a bridging member.
Claim 4
Dependent Claim
21 words
The pattern display apparatus according to claim 2 wherein saiD gap beneath said bridging member is filled with a solid insulator.
Claim 5
Dependent Claim
51 words
The pattern display apparatus according to claim 1 wherein a spacer in the form of a rectangular frame is provided between said pair of insulator substrate to surround said matrix of electrodes and said liquid crystal is filled in the space defined by said pair of insulator substrates and said spacer.
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |