C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
31/105, 345/59
C09K 19/10 (2006.01) G02F 1/1333 (2006.01)
Patent
CA 2031464
ABSTRACT OF THE INVENTION 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°C to about 100°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 electroop- tic displays, wherever it is desirable to be able to adjust visible or transparency and regardless of temperature extremes.
Kent State University
Ridout & Maybee Llp
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