US5139697A
Expired / Lapsed
US
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Liquid crystal composition and liquid crystal device using same
Assignee: Canon Inc
•
Filing: 1991-05-30
•
Granted: 1992-08-18
•
Expires: 2011-05-30
Abstract
Abstract A liquid crystal composition comprises at least one compound represented by the formula [I] below and at least one compound represented by the formula [II] below: ##STR1## wherein R 1 denotes an alkyl group having 1-16 carbon atoms capable of having a substituent; R 2 denotes any one of alkyl group, alkoxy group, alkoxycarbonyl group, acyloxy group and alkoxycarbonyloxy group, each having 1-16 carbon atoms and being capable of having a substituent; and A denotes any one of ##STR2## each capable of having a substituent; and ##STR3## wherein R 3 denotes a linear alkyl group having 1-16 carbon atoms; R 4 denotes a linear alkyl group having 1-12 carbon atoms; X 1 is a single bond, --O--, ##STR4## X 2 is --OCH 2 --, ##STR5## or --CH 2 --; and Z is ##STR6##
Inventors
- 👤 Takeshi Togano
- 👤 Masahiro Terada
- 👤 Masataka Yamashita
- 👤 Shosei Mori
- 👤 Takashi Iwaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:09
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/42; C09K19/46
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
132 words
A liquid crystal composition comprising at least one compound represented by the formula [I] below and at least one compound represented by the formula [II] below: ##STR35## wherein R 1 denotes an alkyl group having 1-16 carbon atoms; R 2 denotes any one of alkyl group, alkoxy group, alkoxycarbonyl group, acyloxy group and alkoxycarbonyloxy group, each having 1-16 carbon atoms and optionally substituted with an alkyl or alkoxy group; and A denotes any one of ##STR36## each optionally substituted with --F or --CN; and ##STR37## wherein R 3 denotes a linear alkyl group having 1-16 carbon atoms; R 4 denotes a linear alkyl group having 1 -12 carbon atoms; X 1 is a single bond, --O--, ##STR38## X 2 is --OCH 2 --, ##STR39## or --CH 2 --; and Z is ##STR40##
Claim 2
Dependent Claim
132 words
A liquid crystal composition comprising at least one compound represented by the formula [I] below and at least one compound represented by the formula [II] below: ##STR35## wherein R 1 denotes an alkyl group having 1-16 carbon atoms; R 2 denotes any one of alkyl group, alkoxy group, alkoxycarbonyl group, acyloxy group and alkoxycarbonyloxy group, each having 1-16 carbon atoms and optionally substituted with an alkyl or alkoxy group; and A denotes any one of ##STR36## each optionally substituted with --F or --CN; and ##STR37## wherein R 3 denotes a linear alkyl group having 1-16 carbon atoms; R 4 denotes a linear alkyl group having 1 -12 carbon atoms; X 1 is a single bond, --O--, ##STR38## X 2 is --OCH 2 --, ##STR39## or --CH 2 --; and Z is ##STR40##
Claim 3
Dependent Claim
40 words
A composition according to claim 1, which further comprises at least one compound represented by any of the following formulas [III], [IV] and [V]: ##STR41## wherein R 5 -R 8 respectively denote a linear alkyl group having 1-14 carbon atoms.
Claim 4
Dependent Claim
26 words
A liquid crystal device comprising a pair of electrode plates and a liquid crystal composition according to claims 1 or 2 disposed between the electrode plates.
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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) | 1995-08-18 | 1996-02-17 | 1996-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-18 | 2000-02-17 | 2000-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-18 | 2004-02-17 | 2004-08-18 | $7700.00 | Window Closed / Lapsed |