Liquid crystal compound

Details Liquid crystal compound Liquid crystal compound

1990-10-19

1992-07-14

Stoll, Robert L.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229901, 560 59, 560 73, 560 76, 560 86, 560102, 560108, C09K 1912, C07C 6976

Patent

active

051300508

ABSTRACT:
A new tetrastable liquid crystal is provided which is useful for display and switching devices. The liquid crystal has the formula ##STR1## where R.sub.1 is a C.sub.5-18 alkyl group and R.sub.2 is a C.sub.4-15 alkyl group and * is an optically active center.

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Suzuki et al., Fluorine-Containing Ferroelectric Liquid Crystal Compound Showing Tristable Switching, Second Int'l Conf. on Ferroelectric Liquid Crystals Abstract PI06 (Jun. 27-30, 1989).
Yamawaki et al., 3.3 Electro-Optical Properties of Fluorine-Containing Ferroelectric Liquid Crystal Cells, Proceedings of the Ninth Int'l Display Research Conf. 26 (Oct. 16-18, 1989).
Suzuki et al., New Fluorine-Containing Ferroelectric Liquid Crystal Compounds With Large Spontaneous Polarization And Fast Switching Time, Twelfth Int'l Liquid Crystal Conf. Abstract No. SY02 (Aug. 15, 1988).
Helical Twist And Spontaneous Polarization Direction In Ferroelectric Smectic Liquid Crystals, 2-J. Am. Chem. Soc. 1986, 108, 4736-4742 (J. W. Goodby et al.).
A Chiral Induced Ferroelectric Liquid Crystal Phase Transition With A Vanishingly Small Enthalpy-Liquid Crystals, 1988, vol. 3, No. 9, 1245-1254 (J. W. Goodby et al.).
Tristable Switching In Surface Stabilized Ferroelectric Liquid Crystals With A Large Spontaneous Polarization-Japanese Journal of Applied Physics, vol. 27, No. 5, May, 1988, pp. L729-L732 (A. D. L. Chandani et al.).

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