Liquid crystal device and process for preparing the same

Details Liquid crystal device and process for preparing the same Liquid crystal device and process for preparing the same

1996-12-20

1999-03-30

Wu, Shean C.

Compositions

Liquid crystal compositions

25229962, 349 84, 349 99, 349134, 349171, 349172, 349174, C09K 1952, G02F 1133

Patent

active

058884203

ABSTRACT:
Disclosed is a liquid crystal device comprising a liquid crystal cell filled with a liquid crystal material capable of exhibiting a smectic phase, said cell including upper and lower substrates each having in order an electrode and an orientation film in contact with the liquid crystal material, a cross angle e formed by the orientation treatment directions of the orientation films is 180.degree.-.delta. or 360.degree.-.delta. (0.degree.<.delta..ltoreq.90.degree.). Also disclosed is a process for preparing the above-mentioned liquid crystal device comprising treating the orientation films and preparing the liquid crystal cell so as to have the orientation treatment directions of the orientation films form the cross angle .THETA. within the above range in the cell. According to the present invention, a liquid crystal device having a high electrooptic response speed required in various technical fields such as optical communication, steroscopic image display, image processing and optical operation and also having a high optical contrast can be obtained.

REFERENCES:
patent: 4778259 (1988-10-01), Kitayama et al.
patent: 5093742 (1992-03-01), Okamoto et al.
patent: 5724115 (1998-03-01), Sakai et al.
Patent Abstracts of Japan, vol. 18, No. 194, and JP-A-06-003676, Apr. 5, 1994.
Patent Abstracts of Japan, vol. 12, No. 125 and JP-A-62-250419, Oct. 31, 1987.

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