US4387965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guest host type, positive and negative recessed liquid crystal display devices
Assignee: Sharp Corp
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Filing: 1981-01-06
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Granted: 1983-06-14
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Expires: 2001-01-06
Abstract
Abstract A guest host type liquid crystal display device wherein a first distance between electrodes formed on a pair of substrates is defined to be different from a second distance between one of the electrodes formed on one of the substrates and the remaining portion of the other substrate which does not contain an electrode. In a positive type display device, the first distance is larger than the second distance. In a negative type display device, on the other hand, the first distance is smaller than the second distance.
Inventors
- 👤 Yoshiyuki Hara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:09
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/137; G02F1/13725; G02F1/133; G02F1/1333; G02F1/133371
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
136 words
A liquid crystal display device comprising: first and second substrates having opposed inward facing surfaces; first electrode means formed on the inward facing surface of said first substrate; a plurality of second electrode means formed on the inward facing surface of said second substrate, thereby forming electrode-less areas on said second substrate; said substrates being spaced apart with a first distance between said first and second electrode means being greater than a second distance between said electrode-less areas on said second substrate and said first electrode means; a pleochroic guest dye material contained between said substrates, said dye material having a maximum absorption spectrum in the direction of its longitudinal axis; and means for activating selected ones of said second electrode means whereby the area defined by said activated second electrode means forms a desired display.
Claim 2
Dependent Claim
136 words
A liquid crystal display device comprising: first and second substrates having opposed inward facing surfaces; first electrode means formed on the inward facing surface of said first substrate; a plurality of second electrode means formed on the inward facing surface of said second substrate, thereby forming electrode-less areas on said second substrate; said substrates being spaced apart with a first distance between said first and second electrode means being greater than a second distance between said electrode-less areas on said second substrate and said first electrode means; a pleochroic guest dye material contained between said substrates, said dye material having a maximum absorption spectrum in the direction of its longitudinal axis; and means for activating selected ones of said second electrode means whereby the area defined by said activated second electrode means forms a desired display.
Claim 3
Dependent Claim
29 words
A liquid crystal display device as in claim 1, wherein said first distance is about 10 to 20 μm and said second distance is about 5 to 15 μm.
Claim 4
Dependent Claim
33 words
A liquid crystal display device as in claim 1, wherein said second substrate comprises a glass plate and an insulating layer disposed thereon, said second electrode means being disposed on said insulating layer.
Claim 5
Dependent Claim
136 words
A liquid crystal display device comprising: first and second substrates having opposed inward facing surfaces; first electrode means formed on the inward facing surface of said first substrate; a plurality of second electrode means formed on the inward facing surface of said second substrate, thereby forming electrode-less areas on said second substrate; said substrates being spaced apart with a first distance between said first and second electrode means being less than a second distance between said electrode-less areas on said second substrate and said first electrode means; a pleochroic guest dye material contained between said substrates, said dye material having a maximum absorption spectrum in the direction of its minor axis; and means for activating selected ones of said second electrode means whereby the area defined by said activated second electrode means forms a desired display.
Claim 6
Dependent Claim
136 words
A liquid crystal display device comprising: first and second substrates having opposed inward facing surfaces; first electrode means formed on the inward facing surface of said first substrate; a plurality of second electrode means formed on the inward facing surface of said second substrate, thereby forming electrode-less areas on said second substrate; said substrates being spaced apart with a first distance between said first and second electrode means being less than a second distance between said electrode-less areas on said second substrate and said first electrode means; a pleochroic guest dye material contained between said substrates, said dye material having a maximum absorption spectrum in the direction of its minor axis; and means for activating selected ones of said second electrode means whereby the area defined by said activated second electrode means forms a desired display.
Claim 7
Dependent Claim
29 words
A liquid crystal display device as in claim 4, wherein said first distance is about 5 to 15 μm and said second distance is about 10 to 20 μm.
Claim 8
Dependent Claim
33 words
A liquid crystal display device as in claim 4, wherein said second substrate comprises a glass plate and an insulating layer disposed thereon, said second electrode means being disposed on said insulating layer.
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) | 1986-06-13 | 1986-12-13 | 1987-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-13 | 1990-12-13 | 1991-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-13 | 1994-12-13 | 1995-06-14 | $7700.00 | Window Closed / Lapsed |