EP0359146A2
Expired / Lapsed
EP
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Liquid crystal device
Assignee: DIC Corp
•
Filing: 1989-09-08
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Granted: —
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Expires: 2009-09-08
Abstract
Abstract A liquid crystal device which comprises a pair of substrates having an electrode layer, at least one of said substrates being transparent, and a light-control layer supported between the substrate is disclosed, wherein said light-control layer comprises a continuous liquid crystal phase composed of a nematic liquid crystal material and a transparent solid substance having the three dimensional network existing in said continuous liquid crystal phase, said nematic liquid crystal material having an optical anisotropy (Δn) ranging from 0.18 to 0.3 and a dielectric anisotropy (Δε) ranging from 15 to 30. The device can be driven at a low voltage to provide a display of sufficient contrast and is applicable to a multiplexing drive system.
Inventors
- 👤 Kiyofumi Takeuchi
- 👤 Haryoshi Takatsu
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 18:20
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/52; C09K19/54; C09K19/542; C09K19/02; C09K19/0208; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1334; C09K2323/00; G02F1/13345
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
89 words
A liquid crystal device which comprises a pair of substrates having an electrode layer, at least one of said substrates being transparent, and a light-control layer supported between the substrates, wherein said light-control layer comprises a continuous liquid crystal phase composed of a nematic liquid crystal material and a transparent solid substance having the three dimensional network existing in said continuous liquid crystal phase, said nematic liquid crystal material having an optical anisotropy (Δn) ranging from 0.18 to 0.3 and a dielectric anisotropy (Δε) ranging from 15 to 30.
Claim 2
Dependent Claim
89 words
A liquid crystal device which comprises a pair of substrates having an electrode layer, at least one of said substrates being transparent, and a light-control layer supported between the substrates, wherein said light-control layer comprises a continuous liquid crystal phase composed of a nematic liquid crystal material and a transparent solid substance having the three dimensional network existing in said continuous liquid crystal phase, said nematic liquid crystal material having an optical anisotropy (Δn) ranging from 0.18 to 0.3 and a dielectric anisotropy (Δε) ranging from 15 to 30.
Claim 3
Dependent Claim
31 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a nematic liquid crystal compound having an optical anisotropy (Δn) ranging from 0.19 to 0.4.
Claim 4
Dependent Claim
31 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a nematic liquid crystal compound having a dielectric anisotropy (Δε) ranging from 25 to 50.
Claim 5
Dependent Claim
59 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (I): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom.
Claim 6
Dependent Claim
59 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (II): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom.
Claim 7
Dependent Claim
59 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (III): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom.
Claim 8
Dependent Claim
59 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (IV): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom.
Claim 9
Dependent Claim
59 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (V): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom.
Claim 10
Dependent Claim
59 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (VI): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom.
Claim 11
Dependent Claim
59 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (VII): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom.
Claim 12
Dependent Claim
59 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (VIII): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom.
Claim 13
Dependent Claim
59 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (IX): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom.
Claim 14
Dependent Claim
59 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (X): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom.
Claim 15
Dependent Claim
59 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (XI): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom.
Claim 16
Dependent Claim
59 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (XII): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom.
Claim 17
Dependent Claim
75 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (I): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom, and a compound represented by formula (IV): wherein R, X, and Y are as defined above.
Claim 18
Dependent Claim
75 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (I): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom, and a compound represented by formula (V): wherein R, X, and Y are as defined above.
Claim 19
Dependent Claim
75 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (I): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom, and a compound represented by formula (VI): wherein R, X, and Y are as defined above.
Claim 20
Dependent Claim
75 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (I): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom, and a compound represented by formula (VII): wherein R, X, and Y are as defined above.
Claim 21
Dependent Claim
75 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (I): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom, and a compound represented by formula (VIII): wherein R, X, and Y are as defined above.
Claim 22
Dependent Claim
75 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (I): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom, and a compound represented by formula (IX): wherein R, X, and Y are as defined above.
Claim 23
Dependent Claim
75 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (I): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom, and a compound represented by formula (X): wherein R, X, and Y are as defined above.
Claim 24
Dependent Claim
75 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (I): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom, and a compound represented by formula (XI): wherein R, X, and Y are as defined above.
Claim 25
Dependent Claim
75 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (I): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom, and a compound represented by formula (XII): wherein R, X, and Y are as defined above.
Claim 26
Dependent Claim
75 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (II): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom, and a compound represented by formula (VI): wherein R, X, and Y are as defined above.
Claim 27
Dependent Claim
75 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (II): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom, and a compound represented by formula (V): wherein R, X, and Y are as defined above.
Claim 28
Dependent Claim
75 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (II): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom, and a compound represented by formula (VI): wherein R, X, and Y are as defined above.
Claim 29
Dependent Claim
75 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (II): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom, and a compound represented by formula (VII): wherein R, X, and Y are as defined above.
Claim 30
Dependent Claim
75 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (II): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom, and a compound represented by formula (VIII): wherein R, X, and Y are as defined above.
Claim 31
Dependent Claim
75 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (II): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom, and a compound represented by formula (IX): wherein R, X, and Y are as defined above.
Claim 32
Dependent Claim
75 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (II): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom, and a compound represented by formula (X): wherein R, X, and Y are as defined above.
Claim 33
Dependent Claim
75 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (II): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom, and a compound represented by formula (XI): wherein R, X, and Y are as defined above.
Claim 34
Dependent Claim
75 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (II): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom, and a compound represented by formula (XII): wherein R, X, and Y are as defined above.
Claim 35
Dependent Claim
75 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (III): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom, and a compound represented by formula (IV): wherein R, X, and Y are as defined above.
Claim 36
Dependent Claim
75 words
A liquid crystal device a claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (III): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom, and a compound represented by formula (VII): wherein R, X, and Y are as defined above.
Claim 37
Dependent Claim
75 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material contains a compound represented by formula (III): wherein R represents a straight chain alkyl, alkoxyl or alkenyl group having from 1 to 10 carbon atoms; X represents a fluorine atom or a cyano group; and Y represents a hydrogen atom or a fluorine atom, and a compound represented by formula (VIII): wherein R, X, and Y are as defined above.
Claim 38
Dependent Claim
31 words
A liquid crystal device as claimed in claim 1, wherein said nematic liquid crystal material is present in an amount of at least 60% by weight based on the light-control layer.
Claim 39
Dependent Claim
18 words
A liquid crystal device as claimed in claim 1, wherein said transparent solid substance is a synthetic resin.
Claim 40
Dependent Claim
22 words
A liquid crystal device as claimed in claim 1, wherein said light-control layer has a thickness of from 5 to 30 µm.
References Cited (Backward Citations)
No citation records indexed.
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