Polymer dispersed liquid crystal with polymer glass transition a

Details Polymer dispersed liquid crystal with polymer glass transition a Polymer dispersed liquid crystal with polymer glass transition a

1993-09-29

1995-09-12

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 99, 359 52, G02F 113

Patent

active

054502209

ABSTRACT:
A liquid crystal display device according to the present invention includes a pair of electrode substrates and a polymer dispersed liquid crystal complex film interposed between the pair of substrates. The polymer dispersed liquid crystal complex film includes a liquid crystal composition and a polymer resin composition. It is ensured that a value .DELTA.T is 25.degree. C. or less, and a glass transition temperature T.sub.g of the polymer resin composition is 60.degree. C. or more, the value .DELTA.T being defined as a difference between a phase transition temperature T.sub.CI of the liquid crystal composition between a liquid crystal phase and an isotropic liquid phase thereof and a phase transition temperature T.sub.matrix of the polymer dispersed liquid crystal complex film.

REFERENCES:
patent: 4890902 (1990-01-01), Doane et al.
patent: 5327271 (1994-07-01), Terkeuchi et al.

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