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EP0335348A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Mesomorphic compound, ferroelectric liquid crystal composition containing same and ferroelectric liquid crystal device

Assignee: Canon Inc
•
Filing: 1989-03-28
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Granted: —
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Expires: 2009-03-28
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Abstract

Abstract There is disclosed a mesomorphic compound represented by the following formula (I): wherein A 1 denotes a single bond, A 2 denotes X denotes hydrogen, a halogen or cyano group; Y denotes oxygen or sulfur; R 1 and R 2 respectively denotes a linear or branched alkyl, alkoxy, alkylcarbonyloxy, alkoxycarbonyl or alkoxycarbonyloxy group each having 1 - 18 carbon atoms and each capable of having a substituted of chloro, bromo, cyano, alkoxy or alkoxycarbonyl group; and B denotes A ferroelectric liquid crystal composition comprises at least two mesomorphic compounds including at least one mesomorphic compound represented by the formula (I). A ferroelectric liquid crystal device is constituted by disposing the ferroelectric liquid crystal composition between a pair of substrates.

Inventors

  • 👤 Kenji Shinjo
  • 👤 Akio Joshida
  • 👤 Takashi Iwaki
  • 👤 Takao Takiguchi
  • 👤 Hiroyuki Kitayama
  • 👤 Kazuhara Katagiri

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-01 16:59
CPC Classifications
C; C07; C07D; C07D271/00; C07D271/02; C07D271/10; C07D285/00; C07D285/01; C07D285/02; C07D285/04; C07D285/12; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/34; C09K19/3441; C09K19/345; C09K19/3455; C09K19/3458; C09K19/3463; C09K19/3477; C09K19/348; C09K19/3491; C09K19/3497; C09K19/42

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 75 words
A mesomorphic compound represented by the following formula (I): wherein A 1 denotes a single bond, A 2 denotes X denotes hydrogen, a halogen or cyano group; Y denotes oxygen or sulfur; R 1 and R 2 respectively denotes a linear or branched alkyl, alkoxy, alkylcarbonyloxy, alkoxycarbonyl or alkoxycarbonyloxy group each having 1 - 18 carbon atoms and each capable of having a substituted of chloro, bromo, cyano, alkoxy or alkoxycarbonyl group; and B denotes
Claim 2
Dependent Claim 75 words
A mesomorphic compound represented by the following formula (I): wherein A 1 denotes a single bond, A 2 denotes X denotes hydrogen, a halogen or cyano group; Y denotes oxygen or sulfur; R 1 and R 2 respectively denotes a linear or branched alkyl, alkoxy, alkylcarbonyloxy, alkoxycarbonyl or alkoxycarbonyloxy group each having 1 - 18 carbon atoms and each capable of having a substituted of chloro, bromo, cyano, alkoxy or alkoxycarbonyl group; and B denotes
Claim 3
Dependent Claim 26 words
A ferroelectric liquid crystal composition comprising at least two mesomorphic compounds, at least one of which is represented by the formula (I) recited in Claim 1.
Claim 4
Dependent Claim 20 words
A ferroelectric liquid crystal device, comprising at pair of substrates and a ferroelectric liquid crystal composition according to Claim 2.

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