Ferroelectric liquid crystal apparatus having a threshold voltag

Details Ferroelectric liquid crystal apparatus having a threshold voltag Ferroelectric liquid crystal apparatus having a threshold voltag

1994-10-11

1995-12-26

Gross, Anita Pellman

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359100, G02F 1141

Patent

active

054792835

ABSTRACT:
A liquid crystal element includes a liquid crystal exhibiting spontaneous polarization, a pair of electrode substrates for sandwiching the liquid crystal therebetween, and insulating layers formed between the electrode substrates and the liquid crystal. A spontaneous polarization P.sub.s value, in nC/cm.sup.2, of the liquid crystal, an interelectrode composite capacitance Ci, in nF/cm.sup.2, of the insulating layers, and a voltage threshold value Vth, in volts, of optical response of the liquid crystal in the liquid crystal element satisfy the following condition: ##EQU1##

REFERENCES:
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patent: 4840462 (1989-06-01), Hartmann
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patent: 5136408 (1992-08-01), Okada et al.
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W. Hartmann, Ferroelectric Liquid-Crystal Video Display, Proceedings of the Society for Information Display, vol. 30, No. 2 (1989).

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