Nova Patents
EP0347940A2

Ferroelectric chiral smectic liquid crystal composition and liquid crystal device using same.

Abstract

A ferroelectric chiral smectic liquid crystal composition, comprising: at least one optically active compound represented by the following formula (II): wherein R3 denotes a linear or branched alkyl group having 1 - 18 carbon atoms capable of having a substituent; X3 denotes a single bond, -O- or Z1 denotes a single bond or orand m is 1 - 12; at least one compound represented by the following formula (III): wherein R4 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 X5 denotes a single bond, and at least one compound represented by the following formula (I) or (IV): wherein R, and R2 respectively denote a linear or branched alkyl group having 1 - 18 carbon atoms capable of having a substituent of C1 - C12 alkoxy group; X, and X2 respectively denote a single bond, wherein R6 and R7 respectively denote a linear or branched alkyl group having 1 - 18 carbon atoms capable of having a substituent; X6 and X7 respectively denote a single bond, Z2 denotes -CH20-, -OCH2- or a single bond;respectively denote denotes with proviso that at least one of

EP0347940A2, drawing sheet 1
Sheet 1 of 1,080

Term

Term ended

Projected expiry passed 23 June 2009, 17.3 years ago.

  1. Priority
  2. Filed
  3. Published
  4. Projected expiry
  5. Today

7 claims: 2 independent, 5 dependent

  1. 1
    A ferroelectric chiral smectic liquid crystal composition, comprising:at least one compound represented by the following formula (II): wherein R3 denotes a linear or branched alkyl group having 1 - 18 carbon atoms capable of having a substituent;X3 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 R4 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, andat least one compound represented by the following formula (I) or (IV): wherein R, and R2 respectively denote a linear or branched alkyl group having 1 - 18 carbon atoms capable of having a substituent of C1 - C12 alkoxy group;X1 and X2 respectively denote a single bond, wherein R6 and R7 respectively denote a linear or branched alkyl group having 1 - 18 carbon atoms capable of having a substituent;X6 and X7 respectively denote a single bond, Z2 denotes - -CH20-, -OCH2- or a single bond;respectively denote denotes with proviso that at least one of
  2. 7
    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.
Independent claims2