Temperature compensated liquid crystal devices

Compositions – Radioactive compositions – Nuclear reactor fuel

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Details

252299, 252408, 350330, G02F 113, C09K 334

Patent

active

042192552

ABSTRACT:
A phase change liquid crystal device comprising a layer of liquid crystal material contained between two transparent slides which carry electrode structures for applying a voltage across the layer. The liquid crystal material is a mixture of nematic and cholesteric material having a smectic to cholesteric transition just below the operating temperature range of the device. This provides a cholesteric pitch change to compensate for changes with temperature in the elastic twist and dielectric constants.

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