US4579424A
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Liquid crystal display device having interdigitated common electrodes and color filters
Assignee: Mitsubishi Electric Corp
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Filing: 1984-01-26
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Granted: 1986-04-01
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Expires: 2004-01-26
Abstract
Abstract A liquid crystal display device for displaying numerals in segments and in color including N common electrode divisions having interdigital configurations and striped transparent colored wires of N colors formed on the common electrode divisions in conformity therewith, with each segment containing display color elements of N+1 colors or more. The striped transparent colored layers are successively arranged in repetitive patterns, and may consist of two or more colors. The pitch of the striped transparent colored wires should provide a viewing angle within 2 minutes.
Inventors
- 👤 Fumio Matsukawa
- 👤 Hirotsugu Arai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:50
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133509; G02F1/133514; G02F1/1343; G02F1/134309; G02F1/134327; G09; G09F; G09F9/00; G09F9/30; G09F9/35
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
72 words
A liquid crystal display device, comprising: a plurality of similar segmented character units, each unit comprising a plurality of character electrodes and a plurality of electrical leads attached thereto, each said unit capable of representing a plurality of different characters; at least two sets of a plurality of common electrodes, extending in a first direction in parallel adjacent all said character units, the electrodes of different sets alternating in a second direction;
Claim 2
Dependent Claim
72 words
A liquid crystal display device, comprising: a plurality of similar segmented character units, each unit comprising a plurality of character electrodes and a plurality of electrical leads attached thereto, each said unit capable of representing a plurality of different characters; at least two sets of a plurality of common electrodes, extending in a first direction in parallel adjacent all said character units, the electrodes of different sets alternating in a second direction;
Claim 3
Dependent Claim
53 words
at least two sets of differently colored transparent filters overlying respective sets of said common electrodes on the side of said character units; a continuous insulator layer covering said sets of filters on the side of said character units; and a liquid crystal layer disposed between said insulator layer and said character units.
Claim 4
Dependent Claim
53 words
at least two sets of differently colored transparent filters overlying respective sets of said common electrodes on the side of said character units; a continuous insulator layer covering said sets of filters on the side of said character units; and a liquid crystal layer disposed between said insulator layer and said character units.
Claim 5
Dependent Claim
20 words
A device as recited in claim 1, wherein said sets of common electrodes are interdigitated adjacent each said character unit.
Claim 6
Dependent Claim
28 words
The liquid crystal display device according to claim 1, wherein said striped transparent colored layers are spaced apart at a pitch within a viewing angle of 2 minutes.
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) | 1989-03-31 | 1989-09-30 | 1990-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-31 | 1993-09-30 | 1994-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-31 | 1997-09-30 | 1998-04-01 | $7700.00 | Window Closed / Lapsed |