Ferroelectric liquid crystal device

Details Ferroelectric liquid crystal device Ferroelectric liquid crystal device

1991-05-16

1992-03-24

Miller, Stanley D.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 75, 359100, G02F 1133

Patent

active

050993445

ABSTRACT:
A ferroelectric liquid crystal device comprises a pair of opposite electrodes and a ferroelectric liquid crystal disposed between the electrodes. At least one of the opposite electrodes is coated with an insulating film having a thickness of 200 .ANG. or larger. The ferroelectric liquid crystal has a capacitance C.sub.LC measured in (nF/cm.sup.2) and a spontaneous polarization PS measured in (nC/cm.sup.2) and the insulating film has a capacitance Ci measured in (nF/cm.sup.2) wherein the magnitudes of C.sub.LC, Ps, and Ci satisfy the relationship of

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