Title:
LIQUID CRYSTAL COMPOSITION, LIQUID CRYSTAL ELEMENT CONTAINING THE SAME AND LIQUID DEVICE CONTAINING THE SAME
Document Type and Number:
Japanese Patent JP3585184
Kind Code:
B2
Abstract:
PURPOSE: To obtain a liquid crystal composition suppressed in the reduction in a drive margin at a low-temperature region and undergoing no change in characteristics even when left standing at cryogenic temperatures by mixing two specified liquid crystal compounds with each other in a specified ratio.
CONSTITUTION: This composition is prepared by mixing 0.1-30wt.% each of liquid crystal compounds of formulas I and II (wherein R1 and R2 are each a 1-18C linear or branched alkyl; X1, X2 and X3 are each a single bond, O, a group of formula III or the like; X4 is a single bond, OCH2, a group of formula III or the like; A1 and A2 are each a group of formula IV, a group of formula V, a group of formula VI or the like; (n) is 1-10; and (m) is 3-16). It is desirable that this composition has chiral smectic C phase and that the tilt angle δ of the layer of the chiral smectic C phase has an adjusted value of 3-15° in the temperature range of 0-60°C. This composition can be desirably used in the production of a ferroelectric liquid crystal element, a ferroelectric liquid crystal device, a liquid crystal optical shutter, etc.
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Inventors:
Masataka Yamashita
Masahiro Terada
Makoto Mori
Shuji Yamada
Katagiri Kazuharu
Ikuo Nakazawa
Masahiro Terada
Makoto Mori
Shuji Yamada
Katagiri Kazuharu
Ikuo Nakazawa
Application Number:
JP3295295A
Publication Date:
November 04, 2004
Filing Date:
January 31, 1995
Export Citation:
Assignee:
Canon Inc
International Classes:
G02F1/13; C09K19/02; C09K19/34; C09K19/42; C09K19/44; C09K19/46; (IPC1-7): C09K19/42; C09K19/02; C09K19/34; C09K19/44; C09K19/46; G02F1/13
Domestic Patent References:
JP8209134A | ||||
JP7179371A | ||||
JP6256231A | ||||
JP5345891A | ||||
JP4272989A | ||||
JP4211674A |
Attorney, Agent or Firm:
Tokuhiro Watanabe
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