Ferroelectric liquid crystal optical modulation device having no

Details Ferroelectric liquid crystal optical modulation device having no Ferroelectric liquid crystal optical modulation device having no

1989-01-23

1992-04-28

Miller, Stanley D.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 63, 359 87, 359 76, G02F 113

Patent

active

051092913

ABSTRACT:
An optical modulation device, comprising a) a cell structure including: oppositely spaced electrodes forming a pixel portion where the opposite electrodes face each other and a non-pixel portion where the opposite electrodes do not face each other, and a ferroelectric liquid crystal showing optically bistable states and disposed between the opposite electrodes over the pixel portion and the non-pixel portion; and b) at least one polarizer. The ferroelectric liquid crystal at the non-pixel portion is placed in an orientation state providing one optically stable state, and the angle between an average molecular axis of the ferroelectric liquid crystal in the orientation state and the polarization axis of one of the above mentioned at least one polarizer is smaller than the angle between the average molecular axis and a central axis of orientation of the ferroelectric liquid crystal.

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N. A. Clark--"Fast and Bistable Electro-Optics Displays Using FLC", Eurodisplay--1984--pp. 73-76.

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