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Patent US4602292A successfully refreshed from Google Patents.
US4602292A
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US
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Driving system for matrix display device
Assignee: Citizen Watch Co Ltd
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Filing: 1984-02-13
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Granted: 1986-07-22
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Expires: 2004-02-13
Abstract
Abstract In driving system for a matrix display device which comprises display elements arranged in matrix form, row electrodes and column electrodes for driving the display elements arranged in matrix form, row electrodes and column electrodes for driving the display elements, and driving means for applying driving signals corresponding to display information into the row electrodes and column electrodes, display elements in even row and display elements in odd row are respectively driven by independent row electrode group and column electrode group thereby display of high density can be performed without using a memory circuit and without reducing the display quality.
Inventors
- 👤 Seigo Togashi
- 👤 Shigeru Morokawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:50
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/20; G09G3/34; G09G3/36; G09G3/3611; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1343; G02F1/134309; G02F1/134336; H; H04; H04N; H04N5/00; H04N5/66
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
68 words
Driving system for a matrix display device comprising display elements arranged in matrix form, row electrodes and column electrodes for driving said display elements, and driving means for applying driving signals corresponding to display information into said row electrodes and column electrodes, characterized in that display elements in even rows and display elements in odd rows are respectively driven by independent row electrode group and column electrode group.
Claim 2
Dependent Claim
68 words
Driving system for a matrix display device comprising display elements arranged in matrix form, row electrodes and column electrodes for driving said display elements, and driving means for applying driving signals corresponding to display information into said row electrodes and column electrodes, characterized in that display elements in even rows and display elements in odd rows are respectively driven by independent row electrode group and column electrode group.
Claim 3
Dependent Claim
104 words
Driving system for a matrix display device as set forth in claim 1, characterized in that the display information is transmitted to the driving means in interlaced scanning form in repetition of odd field to transmit display information of odd rows and even field to transmit display information of even rows; in the odd field, display elements in odd rows are at least partly in drive phase and display elements in even rows are in quiescent phase; and in the even field, display elements in even rows are at least partly in drive phase and display elements in odd rows are in quiescent phase.
Claim 4
Dependent Claim
61 words
Driving system for a matrix display device as set forth in claim 1, characterized in that the display elements belong to first and second regions, row electrodes for driving display elements of respective regions are externally connected from opposite sides, and when display elements in one region is in drive phase, display elements in the other region is in quiescent phase.
Claim 5
Dependent Claim
27 words
Driving system for a matrix display device as set forth in claim 1, characterized in that the display elements are liquid crystal elements of field effect type.
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) | 1989-07-21 | 1990-01-20 | 1990-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-21 | 1994-01-20 | 1994-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-21 | 1998-01-20 | 1998-07-22 | $7700.00 | Window Closed / Lapsed |