Polymer dispersed liquid crystal display device, and a method fo

Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only

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428 1, 349 86, G02F 113

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055836739

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 a .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: 4435047 (1984-03-01), Fergason
patent: 4688900 (1987-08-01), Doane et al.
patent: 4890902 (1990-01-01), Doane et al.
patent: 4994204 (1991-02-01), Doane et al.
patent: 5113270 (1992-05-01), Fergason
patent: 5327271 (1994-07-01), Takeuchi et al.
J. L. West et al, Appl. Phys. Lett., (26), Jun. 29, 1992, "Effect of Polymer Matrix Glass Transition Temperature on Polymer Dispersed Liquid Crystal Electro-optics".
P. Jiang et al, The 17th Liquid Crystal Forum, "Studies on Electro-Optics of Multi-Twisting-Power Cholesteric Focal Conid Texture With Polymer Matrix".
S. Niiyama et al, Polymer Preprints, Japan, vol. 38, No. 7, 1989, "A Polymer Liquid Crystal Composite (II)".
JI et al, "A Study of the Surface Anchoring at a Polymer/Liquid Crystal Interface in the Neighbourhood of the Glass Transition", Proceedings Of The 14th International Liquid Crystal Conference, Jun. 21, 1992, Pisa, Italy, vol. 14, No. 6, 1993, London GB, pp. 1885-1893.
Vaz et al, Molecular Crystals And Liquid Crystals (Inc. Nonlinear Optics), vol. 197, Mar. 1991 "Polymer-Dispersed Liquid Crystal Films Formed by Electron-Beam Cure", pp. 83-101.
Montgomery, Jr., Proceedings Of Spie, Liquid Crystal Chemistry Physics And Applications, vol. 1080, 1989, pp. 242-249, "Polymer-Dispersed Liquid Crystal Films for Light Control Applications".

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