A new electric field controlled reflective optical storage effect in mixed liquid crystal systems
- 1 January 1969
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Proceedings of the IEEE
- Vol. 57 (1) , 34-38
- https://doi.org/10.1109/PROC.1969.6866
Abstract
A new electric field controlled reflective optical storage effect has been discovered in mixed nematic-cholesteric liquid crystal systems. Ion motion produced by a dc electric field is used to emulsify the initially transparent mixture and give it a milky white appearance. This state remains after the dc signal is removed. The material can be returned to its initial state by applying an audio-frequency signal. The reflective contrast ratio of 7 to 1, flat construction, low voltage and power writing capability, and storage with continuous readout requiring no maintaining power make the new effect seem attractive for indicator-type applications using solid state addressing circuitry.Keywords
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