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EP0163229A2
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Ferroelectric liquid crystal composition
Assignee: JNC Corp
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Filing: 1985-05-20
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Granted: —
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Expires: 2005-05-20
Abstract
Abstract A ferroelectric liquid crystal composition comprising two or more liquid crystal compounds showing a cystal phase at a lower temperature side of ferroelectric chiral smectic C phase when cooled, for example, compounds of the formulae: and/or wherein R and R' are independently a substituent having a branched or straight-chain alkyl group therein; are independently a divalent six-membered ring group; and Z is a divalent linkage group, shows ferroelectric chiral smectic C phase in a broad temperature range including room temper- , ature.
Inventors
- 👤 Shintaroo Hattori
- 👤 Katsumi Kondo
- 👤 Teruo Kitamura
- 👤 Yasuo Hanawa
- 👤 Akio Mukoh
- 👤 Tadao Nakata
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 12:49
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/32; C09K19/02; C09K19/0225; C09K19/08; C09K19/10; C09K19/12; C09K19/126; C09K19/20; C09K19/2007; C09K19/2021; C09K19/22; C09K19/30; C09K19/3001
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
29 words
A ferroelectric liquid crystal composition comprising two or more liquid crystal compounds showing a crystal phase at a lower temperature side of ferroelectric chiral smectic C phase when cooled.
Claim 2
Dependent Claim
29 words
A ferroelectric liquid crystal composition comprising two or more liquid crystal compounds showing a crystal phase at a lower temperature side of ferroelectric chiral smectic C phase when cooled.
Claim 3
Dependent Claim
38 words
A composition according to Claim 1, wherein the liquid crystal compound having a crystal phase at a lower temperature side of ferroelectric chiral smectic C phase is a mixture of two or more compounds having different chemical structures.
Claim 4
Dependent Claim
71 words
A composition according to Claim lor 2, wherein the liquid crystal compound having a crystal phase at a lower temperature side of ferroelectric chiral smectic C phase is at least one ferroelectric liquid crystal compound selected from compounds represented by the formulae: wherein R and R' are independently a substituent containing therein a branched'or straight-chain alkyl group; are independently a divalent six-membered ring group; and Z is a divalent linkage group.
Claim 5
Dependent Claim
33 words
A composition according to Claim 3, wherein the ferroelectric liquid crystal compound has a fundamental skelton of the formula: and at least two compounds having different fundamental skeltons are contained in the composition.
Claim 6
Dependent Claim
19 words
A composition according to Claim 3 or 4, wherein the fundamental skelton of the formula: is a biphenyl ring.
Claim 7
Dependent Claim
20 words
A composition according to Claim 3 or 4,wherein the fundamental skelton of the formula: is a bezoic acid phenyl ester.
Claim 8
Dependent Claim
32 words
A composition according to any of Claims 3 to6, wherein R and R 1 are independently an alkoxy group, an acyloxy group, an acyl group, an alkoxycarbonyl group or an alkyl group.
Claim 9
Dependent Claim
50 words
A composition according to any of claims 3 to 7,wherein the divalent six-membered ring group is a benzene ring, a cyclohexane ring, a biphenyl ring, a phenylcyclohexane ring, or a naphthalene ring; and Z is an ester group, a S chiff base group, an oxymethylene group or an ethylene group.
Claim 10
Dependent Claim
40 words
A composition according to Claim 4, wherein the ferroelectric liquid crystal having biphenyl ring is represented by the formula: wherein n is an integer of 7 to 12; and C * is a branched alkyl chain having an asymmetric carbon.
Claim 11
Dependent Claim
43 words
A composition according to Claim 4, wherein the ferroelectric liquid crystal having benzoic acid phenyl ester ring is represented by the formula: wherein n is an integer of 7 to 12; and C * is a branched alkyl chain having an asymmetric carbon.
Claim 12
Dependent Claim
43 words
A ferroelectric liquid crystal composition comprising one or more liquid crystal compounds showing a crystal phase at a lower temperature side of ferroelectric chiral smectic C phase when cooled, and the temperature range showing the ferroelectric chiral smectic-C phase including room temperature (20°C).
Claim 13
Dependent Claim
43 words
A ferroelectric liquid crystal composition comprising one or more liquid crystal compounds showing a crystal phase at a lower temperature side of ferroelectric chiral smectic C phase when cooled, and the temperature range showing the ferroelectric chiral smectic-C phase including room temperature (20°C).
References Cited (Backward Citations)
No citation records indexed.
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