Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1992-08-31
1993-12-14
Sikes, William L.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 51, 359106, G02F 1133
Patent
active
052708438
ABSTRACT:
A polymer dispersed liquid crystal display device is provided comprising a copolymer formed from monomers having significantly different reactivities. A reverse mode device is provided consisting of negative liquid crystal microdroplets dispersed in a non-homogeneous polymer matrix consisting of a monomer having a high reactivity and a high surface free energy and another monomer having a low reactivity and has a low surface free energy. The surface active monomer is preferentially distributed at the surface of microdroplets formed by phase separation, causing homeotropic alignment of the liquid crystals.
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Mai Huy
Sikes William L.
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