EP0353760A2
Expired / Lapsed
EP
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Liquid crystal elements and conductive organic compound film-forming compositions
Assignee: Japan Carlit Co Ltd
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Filing: 1989-08-03
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Granted: —
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Expires: 2009-08-03
Abstract
Abstract A liquid crystal element has a pair of opposed substrates, electrodes thereon, and a ferroelectric liquid crystal sealed between the substrates. A film of a conductive organic compound or a mixture of a conductive organic compound and another organic compound is disposed on the substrate surface, optionally via an orienting film. The conductive organic compound is typically a charge-transfer complex. The film may be formed by an LB method, coating vapor phase polymerization or electrolytic polymerization. The element has improved optical bistability, contrast, and response.
Inventors
- 👤 Kenji Nakaya
- 👤 Hitoshi Suenaga
- 👤 Shunsuke Kobayashi
- 👤 Makoto Ebisawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 16:17
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/121; C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/20; C09K19/2007; C09K19/2021; C09K19/22; C09K19/34; C09K19/52; C09K19/58; C09K19/582; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1337; G02F1/133711; G02F1/137; G02F1/139; G02F1/141; A; A61; A61M; A61M2202/00; A61M2202/04; A61M2202/0405; A61M2202/0407; A61M2202/0409
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
60 words
A liquid crystal element comprising a pair of opposed substrates, electrodes on the opposed surfaces of the substrates, and a liquid crystal disposed between the substrates in a sealed manner, characterized in that said liquid crystal is a ferroelectric liquid crystal, and a film comprising a conductive organic compound is present on at least one of the opposed substrate surfaces.
Claim 2
Dependent Claim
60 words
A liquid crystal element comprising a pair of opposed substrates, electrodes on the opposed surfaces of the substrates, and a liquid crystal disposed between the substrates in a sealed manner, characterized in that said liquid crystal is a ferroelectric liquid crystal, and a film comprising a conductive organic compound is present on at least one of the opposed substrate surfaces.
Claim 3
Dependent Claim
17 words
The liquid crystal element of claim 1 wherein said film consists essentially of a conductive organic compound.
Claim 4
Dependent Claim
16 words
The liquid crystal element of claim 1 wherein said conductive organic compound is a charge-transfer material.
Claim 5
Dependent Claim
19 words
The liquid crystal element of claim 1 wherein said conductive organic compound film is formed by a Langmuir-Blodgett method.
Claim 6
Dependent Claim
17 words
The liquid crystal element of claim 1 wherein said conductive organic compound film is formed by coating.
Claim 7
Dependent Claim
19 words
The liquid crystal element of claim 1 wherein said conductive organic compound film is formed by vapor phase polymerization.
Claim 8
Dependent Claim
18 words
The liquid crystal element of claim 1 wherein said conductive organic compound film is formed by electrolytic polymerization.
Claim 9
Dependent Claim
18 words
The liquid crystal element of claim 1 wherein said conductive organic compound film further comprises an orienting agent.
Claim 10
Dependent Claim
27 words
The liquid crystal element of of claim 1 which further comprises an orienting film containing an orienting agent between said conductive organic compound film and the substrate.
Claim 11
Dependent Claim
24 words
The liquid crystal element of claim 8 or 9 wherein said orienting agent is selected from the group consisting of polyimides, polyamides, and polyamide-imides.
Claim 12
Dependent Claim
21 words
A composition for forming a conductive organic compound film, comprising a charge-transfer material and an orienting agent or a precursor thereof.
Claim 13
Dependent Claim
21 words
A composition for forming a conductive organic compound film, comprising a charge-transfer material and an orienting agent or a precursor thereof.
Claim 14
Dependent Claim
18 words
The composition of claim 11 wherein said orienting agent or precursor thereof is a polyimide or polyamic acid.
References Cited (Backward Citations)
No citation records indexed.
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