Patent
1986-07-10
1988-07-26
Miller, Stanley D.
350341, G02F 113
Patent
active
047596147
ABSTRACT:
The element comprises a pair of transparent substrates, a pair of light-transmitting electrodes each provided on the respective substrates, a ferroelectric liquid crystal layer disposed between the pair of substrates and orientation control films for the molecules of the ferroelectric liquid crystal provided between the electrodes and the ferroelectric liquid crystal layer. The orientation control film controls a tile angle of a biphenyle series nematic liquid crystal having biphenyl ring system below 1.5.degree. and causes a uniform molecule orientation characteristic and a memory property for the ferroelectric liquid crystal element of smectic C* liquid crystal and having a liquid crystal layer thickness of even more than 4 .mu.m.
REFERENCES:
patent: 4367924 (1983-01-01), Clark et al.
patent: 4381886 (1983-05-01), Yokokura et al.
patent: 4508429 (1985-04-01), Nagae et al.
Clark et al., "Submicrosecond Bistable Electro-Optic Switching in Liquid Crystals", Applied Phys. Lett., vol. 36, No. 11 (Jun. 1980), pp. 899-901.
Meyer et al., "Ferroelectric Liquid Crystals", Le Journal De Physique, Tome 36, Mar. 1975, pp. L-69-L-71.
Flatischler et al., "Thin Ferroelectric Liquid Crystal Cells with Surface-Induced Alignment . . . ", Molecular Crystals & Liquid Crystals, vol. 131, pp. 21-46.
Era Susumu
Hanawa Yasuo
Isogai Masato
Iwasaki Kishiro
Kando Yasuhiko
Gallivan Richard F.
Hitachi , Ltd.
Miller Stanley D.
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