Color variance polymer matrix display having two scattering stat

Details Color variance polymer matrix display having two scattering stat Color variance polymer matrix display having two scattering stat

1993-03-18

1996-03-12

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 52, 359 98, G02F 113

Patent

active

054991218

ABSTRACT:
Liquid crystal polymer matrix displays are disclosed, one of which is capable of changing from a first color to a second color and shades of color therebetween, and the other of which is capable of changing from a first color to a true colorless state and to lower intensities of said first color. Droplets of liquid crystal material containing a dye mixture comprising a positive order parameter dye and a negative order parameter dye, or a positive order parameter dye and a zero order parameter dye, or a negative order parameter dye and a zero order parameter dye, are dispersed in the polymer matrix. The color changes are attained by varying the magnitude of an electric field across the polymer matrix. The optic axes of the liquid crystal material can be partially of fully aligned in one direction during the curing of the polymer matrix thereby enhancing possible color changes.

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