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EP0347940A2
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Ferroelectric chiral smectic liquid crystal composition and liquid crystal device using same
Assignee: Canon Inc
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Filing: 1989-06-23
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Granted: —
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Expires: 2009-06-23
Abstract
Abstract A ferroelectric chiral smectic liquid crystal composition, comprising: at least one optically active compound represented by the following formula (II): wherein R 3 denotes a linear or branched alkyl group having 1 - 18 carbon atoms capable of having a substituent; X 3 denotes a single bond, -O- or Z 1 denotes a single bond or or and m is 1 - 12; at least one compound represented by the following formula (III): wherein R 4 and Rs respectively denote a linear or branched alkyl group having 1 - 18 carbon atoms capable of having a substituent, at lease one of R4 and Rs being optically active; X 4 denotes a single bond, and X 5 denotes a single bond, and at least one compound represented by the following formula (I) or (IV): wherein R, and R 2 respectively denote a linear or branched alkyl group having 1 - 18 carbon atoms capable of having a substituent of C 1 - C 12 alkoxy group; X, and X 2 respectively denote a single bond, wherein R 6 and R 7 respectively denote a linear or branched alkyl group having 1 - 18 carbon atoms capable of having a substituent; X 6 and X 7 respectively denote a single bond, Z2 denotes -CH 2 0-, -OCH 2 - or a single bond;respectively denote denotes with proviso that at least one of
Inventors
- 👤 Kenji Shinjo
- 👤 Takao Takiguchi
- 👤 Hiroyuki Kitayama
- 👤 Kazuharu Katagiri
- 👤 Masataka Yamashita
- 👤 Masahiro Terada
- 👤 Takeshi Togano
- 👤 Yoshiko Kimura
- 👤 Masanobu Asaoka
- 👤 Junko Sato
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 17:33
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/42; C09K19/06; C09K19/34; C09K19/3441; C09K19/345; C09K19/3455; C09K19/3458; C09K19/3463; C09K19/3477; C09K19/348; C09K19/46
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
227 words
A ferroelectric chiral smectic liquid crystal composition, comprising: at least one compound represented by the following formula (II): wherein R 3 denotes a linear or branched alkyl group having 1 - 18 carbon atoms capable of having a substituent; X 3 denotes a single bond, -0- or - Z, denotes a single bond or or and mis 1-12; at least one compound represented by the following formula (III): wherein R 4 and Rs respectively denote a linear or branched alkyl group having 1 - 18 carbon atoms capable of having a substituent, at lease one of R4 and Rs being optically active; X4 denotes a single bond, and Xs denotes a single bond, and at least one compound represented by the following formula (I) or (IV): wherein R, and R 2 respectively denote a linear or branched alkyl group having 1 - 18 carbon atoms capable of having a substituent of C 1 - C 12 alkoxy group; X 1 and X 2 respectively denote a single bond, wherein R 6 and R 7 respectively denote a linear or branched alkyl group having 1 - 18 carbon atoms capable of having a substituent; X 6 and X 7 respectively denote a single bond, Z 2 denotes - -CH 2 0-, -OCH 2 - or a single bond; respectively denote denotes with proviso that at least one of
Claim 2
Dependent Claim
227 words
A ferroelectric chiral smectic liquid crystal composition, comprising: at least one compound represented by the following formula (II): wherein R 3 denotes a linear or branched alkyl group having 1 - 18 carbon atoms capable of having a substituent; X 3 denotes a single bond, -0- or - Z, denotes a single bond or or and mis 1-12; at least one compound represented by the following formula (III): wherein R 4 and Rs respectively denote a linear or branched alkyl group having 1 - 18 carbon atoms capable of having a substituent, at lease one of R4 and Rs being optically active; X4 denotes a single bond, and Xs denotes a single bond, and at least one compound represented by the following formula (I) or (IV): wherein R, and R 2 respectively denote a linear or branched alkyl group having 1 - 18 carbon atoms capable of having a substituent of C 1 - C 12 alkoxy group; X 1 and X 2 respectively denote a single bond, wherein R 6 and R 7 respectively denote a linear or branched alkyl group having 1 - 18 carbon atoms capable of having a substituent; X 6 and X 7 respectively denote a single bond, Z 2 denotes - -CH 2 0-, -OCH 2 - or a single bond; respectively denote denotes with proviso that at least one of
Claim 3
Dependent Claim
17 words
A composition according to Claim 1, which further comprises a mesomorphic compound having a negative dielectric anisotropy.
Claim 4
Dependent Claim
23 words
A composition according to Claim 2, wherein said mesomorphic compound having a negative dielectric anisotropy has a dielectric anisotropy Δ∈ of below -2.
Claim 5
Dependent Claim
23 words
A composition according to Claim 3, wherein said mesomorphic compound having a negative dielectric anisotropy has a dielectric anisotropy Δ∈ of below -5.
Claim 6
Dependent Claim
23 words
A composition according to Claim 4, wherein said mesomorphic compound having a negative dielectric anisotropy has a dielectric anisotropy Ae of below -10.
Claim 7
Dependent Claim
401 words
A composition according to Claim 2, wherein said mesomorphic compound having a negative dielectric anisotropy is a mesomorphic compound represented by any of the following formulas (V-1) to (V-5); Formula (V-1): wherein Ra and Rb respectively denote a linear or branched alkyl group capable of having a substituent; Xa and Xd respectively denote a single bond, Xb and Xc respectively denote a single bond, Aa and Ab respectively denote a single bond, or with proviso that when Aa and Ab are both single bonds, Xb and Xc are both single bonds, and Xa and Xd are both single bonds or -0-, and Ya and Yb are respectively cyano group, halogen or hydrogen with proviso that Ya and Yb cannot be hydrogen simultaneously; Formula (V-2): wherein Re and Rf respectively denote a linear or branched alkyl group capable of having a substituent; Xe and Xh are respectively a single bond, Xf and Xg are respectively - a single bond; and Ae and Af are respectively or a single bond with proviso that Ae and Af cannot be a single bond simultaneously; Formula (V-3): wherein Ai is a single bond or Aj is a single bond, Ri and Rj are respectively a linear or branched alkyl group capable of having a substituent with proviso that Ri and Rj are linear alkyl groups when Aj is a single bond; Z 3 is -0- or -S-; Xi and Xk are respectively a single bond, Xj is a single bond, - -CH 2 0- or -OCH 2 - with proviso that Xi is a single bond when Ai is a single bond, Xj is not a single bond when Aj is and Xk is a single bond when Aj is a single bond; Formula (V-4): wherein RI and Rm are respectively a linear or branched alkyl group capable of having a substituent; AI and Am are respectively a single bond, with proviso that AI and Am cannot be a single bond simultaneously; XI is a single bond, and Xm is a single bond, - Formula (V-5): wherein Rn and Ro are respectively a linear or branched alkyl group capable of having a substituent; Xn and Xq are respectively a single bond, Xo and Xp are respectively a single bond, -CH 2 0-, -OCH 2 - or -CH 2 CH 2 -; An and Ap are respectively a single bond, Ao is and Z 4 is -
Claim 8
Dependent Claim
30 words
A liquid crystal device, comprising a pair of electrode plates and a ferroelectric liquid crystal composition according to any one of Claims 1 - 6 disposed between the electrode plates.
References Cited (Backward Citations)
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