Racemic compound and anti-ferroelectric liquid crystal compositi

Details Racemic compound and anti-ferroelectric liquid crystal compositi Racemic compound and anti-ferroelectric liquid crystal compositi

1998-04-06

1999-11-09

Wu, Shean C.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229965, 25229966, 25229967, C09K 1920, C09K 1921

Patent

active

059807806

ABSTRACT:
A racemic compound of the formula (1) ##STR1## and an anti-ferroelectric liquid crystal composition consisting essentially of said racemic compound and one anti-ferroelectric liquid crystal compound of the formula (2) or a mixture of two or more compounds selected from anti-ferroelectric liquid crystal compounds of the formula (2), ##STR2## said composition of the present invention, exhibiting a small spontaneous polarization and a fast response so that a display device having a high display quality can be achieved.

REFERENCES:
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Murashiro et al., "Dopant effect on threshold electric field of antiferroelectric liquid crystal switching", Liquid Crystal Vo. 14(2), 371-380, 1993.
WPIDS 88-010482, 1988.
WPIDS 89-289849, 1989.
Chandani, et al., "Tristable Switching in Surface Stabilized Ferroelectric Liquid Crystals with a Large Spontaneous Polarization", Jap. Journal of Applied Physics, vol. 27, No. 5, May 1988, pp. L729-L732.
Chandani, et al., "Novel Phases Exhibiting Tristable Switching", Jap. Journal of Applied Physics, vol. 28, No. 7, Jul. 1989, pp. L1261-L1264.
Chandani, et al., "Antiferroelectric Chiral Smectic Phases Responsible for the Tristable Switching in MHPOBC", Jap. Journal of Applied Physics, vol. 28, No. 7, Jul. 1989, pp. L1265-L1268.
Johno, et al., "Smectic Layer Switching by an Electric Field in Ferroelectric Liquid Crystal Cells", Jap. Journal of Applied Physics, vol. 28, No. 1, Jan. 1989, pp. L119-L120.
Johno, et al., "Correspondence between Smectic Layer Switching and DC Hysteresis of Apparent Tilt Angle in an Antiferroelectric Liquid Crystal Mixture", Jap. Journal of Applied Physics, vol. 29, No. 1, Jan. 1990, pp. L111-L114.
Yamamoto, et al., "Full-Color Antiferrelectric Liquid Crystal Display", Preprints--4th International Conference on Ferroelectric Liquid Crystals-1993, pp. 77-78.

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