Compositions – Liquid crystal compositions
Patent
1995-09-20
1997-12-30
Nagumo, Mark
Compositions
Liquid crystal compositions
428 1, 349 91, C09K 1952
Patent
active
057026360
ABSTRACT:
The present invention provides a gel-glass dispersed liquid crystal. The raw material composition of the gel-glass dispersed liquid crystal includes a three functionally substituted silane, two functionally substituted silane, a metal alkoxide and a liquid crystal. At least one of the non-hydrolyzable moieties of the three functionally substituted silane, two functionally substituted silane and metal alkoxide has at least one amino group or a reactive functional group. The refractive index of the oxide of the metal is not less than 1.52. The obtained gel-glass dispersed liquid crystal has good film integrity and flexibility and a low operation voltage.
REFERENCES:
patent: 5449733 (1995-09-01), Zyss et al.
Chang et al., "Electrooptic Characteristics of Amino-Gel-Glass-Dispersed Liquid Crystal and Its Matrix Formation," Jpn. J. Appl. Phys., vol. 34, Part 1, No. 4A, pp. 1888-1894 (1995).
Levy et al., "Preparation of Electro-Optical Active Liquid Crystal Microdomains by the Sol-Gel Process," Materials Letters, vol. 10, No. 9,10, pp. 470-475 (1991).
Haruvy et al., "Supported Sol-Gel Thin-Film Glasses Embodying Laser Dyes. 1. A New Fast Method for the Preparation of Optically Clear Polysiloxane Thin-Film Glasses," Chem. Mater., vol. 3, No. 3, pp. 501-507 (1991).
Oton et al., "Glass Dispersed Liquid Crystals," Liquid Crystals, vol. 10, No. 5, pp. 733-739 (1991).
Nagumo Mark
National Science Council
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