US4450094A
Expired / Lapsed
US
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Nematic liquid crystal compositions for display apparatuses
Assignee: JNC Corp
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Filing: 1980-12-24
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Granted: 1984-05-22
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Expires: 2000-12-24
Abstract
Abstract Liquid crystal compositions suitable for liquid crystal display elements according to multiplexing mode are provided. The compositions consist of at least one nematic liquid crystal compound having a positive dielectric anisotropy (N p ) and at least one nematic liquid crystal compound having a negative dielectric anisotropy (N n ), at least one compound of the group consisting of said at least one N p and said at least one N n being expressed by the general formula ##STR1## wherein R 1 is 1-10 C alkyl group or alkoxy group, carboxyl group or cyano group and R 2 is 1-10 C alkyl group or alkoxy group or carboxyl group.
Inventors
- 👤 Hideo Sato
- 👤 Yasuyuki Goto
- 👤 Hideo Saito
- 👤 Shinichi Sawada
- 👤 Keiichi Matsunami
- 👤 Kohzo Hirata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:14
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/42; C09K19/06; C09K19/34; C09K19/3402; C09K2019/3422
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
87 words
In a multiplexed drive liquid crystal display, the improvement wherein the liquid-crystalline composition comprises (a) 15 to 75% by weight of at least one compound having the formula ##STR63## wherein R 1 represents an alkoxy group of 1 to 10 carbon atoms and R 2 represents an alkyl group of 1 to 10 carbon atoms, and (b) 25 to 76% by weight of at least one compound selected from the group consisting of ##STR64## wherein R 3 represents an alkyl group having 1 to 7 carbon atoms.
Claim 2
Dependent Claim
87 words
In a multiplexed drive liquid crystal display, the improvement wherein the liquid-crystalline composition comprises (a) 15 to 75% by weight of at least one compound having the formula ##STR63## wherein R 1 represents an alkoxy group of 1 to 10 carbon atoms and R 2 represents an alkyl group of 1 to 10 carbon atoms, and (b) 25 to 76% by weight of at least one compound selected from the group consisting of ##STR64## wherein R 3 represents an alkyl group having 1 to 7 carbon atoms.
Claim 3
Dependent Claim
54 words
The display containing the liquid-crystalline composition according to claim 1 wherein the composition contains up to 30% by weight of at least one compound selected from the group expressed by the formulas: ##STR65## wherein R 4 and R 5 each represent an alkyl group or an alkoxy group of 1 to 7 carbon atoms.
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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) | 1987-05-22 | 1987-11-21 | 1988-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-22 | 1991-11-21 | 1992-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-22 | 1995-11-21 | 1996-05-22 | $7700.00 | Window Closed / Lapsed |