Light modulating materials comprising a liquid crystal microdrop

Details Light modulating materials comprising a liquid crystal microdrop Light modulating materials comprising a liquid crystal microdrop

1992-03-30

1993-08-31

Stoll, Robert L.

Compositions

Liquid crystal compositions

428 1, 359 93, 359 94, 359246, 359251, 359256, 359283, C09K 1900, G02F 113

Patent

active

052406369

ABSTRACT:
A haze-free light modulating polymer dispersed liquid crystal (PDLC) material is disclosed which comprises a polymer which is birefringent and possesses anisotropic optical properties similar to those of the dispersed liquid crystal such that the PDLC material in its transparent state exhibits a refractive index that is matched for all directions of incident light providing for an optically clear, scatter-free film for all angles of view. Electrooptic light shutters are possible from this material which are transparent in the field OFF-state and opaque in the field ON-state or vice versa, depending upon the liquid crystal phase structure and configuration of the light shutter device.

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