Extended temperature range polymer dispersed liquid crystal ligh

Details Extended temperature range polymer dispersed liquid crystal ligh Extended temperature range polymer dispersed liquid crystal ligh

1988-08-30

1991-04-02

Miller, Stanley D.

350334, 350350R, G02F 113

Patent

active

050043234

ABSTRACT:
An extended temperature range polymer dispersed liquid crystal light shutter electrically switchable between a transmissive and an opaque state over a working temperature range of about -40.degree. C. to about 100.degree. C. The shutter includes a polymer-dispersed liquid crystalline (PDLC) material comprising a fairly highly cross-linked transparent matrix having phase-separated microdroplets of liquid crystal dispersed therein, the liquid crystal existing in a supercooled liquid crystalline state at low temperatures. Such light shutters are employed in various windows and electrooptic displays, wherever it is desirable to be able to adjust visible or transparency and regardless of temperature extremes.

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