Ferroelectric liquid crystal device with particular layer thickn

Details Ferroelectric liquid crystal device with particular layer thickn Ferroelectric liquid crystal device with particular layer thickn

1993-01-22

1995-11-14

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 82, 359 87, 359100, G02F 11333, G02F 1141

Patent

active

054672090

ABSTRACT:
A ferroelectric liquid crystal device is constituted by a pair of substrates each having thereon a group of display electrodes, and a ferroelectric liquid crystal disposed between the substrates. Liquid crystal movement causing yellowing or local increase in liquid crystal layer thickness is minimized in the device by forming a substantial in liquid crystal layer thickness between a pixel part and a non-pixel part and/or by forming a groove having minute convexities with a maximum diameter of at least 0.1 .mu.m at non-pixel parts on a substrate so that the groove extends in a direction forming an angle of 45-135 degrees with a normal to smectic layers of the liquid crystal.

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