Liquid crystal compositions and liquid crystal display devices

Details Liquid crystal compositions and liquid crystal display devices Liquid crystal compositions and liquid crystal display devices

1994-01-07

1998-03-03

Wu, Shean C.

Compositions

Liquid crystal compositions

2522992, 2522993, 2522994, 2522995, 349186, C09K 1952, C09K 1954, G02F 113

Patent

active

057230650

ABSTRACT:
A liquid crystal composition for a liquid crystal display device of supertwisted nematic mode characterized in that it comprises at least one compound selected from the group consisting of condensed heterocyclic compounds, aromatic amine compounds, aliphatic amine compounds and aromatic hydroxy compounds. Liquid crystal display devices having high quality such that no irregular display caused by dust and fusion phenomena are observed can be provided by using the liquid crystal compositions by controlling to scarcely lower the specific resistance value and to lower the voltage-holding ratio.

REFERENCES:
patent: 3951845 (1976-04-01), Cole, Jr.
patent: 3966631 (1976-06-01), Toriyama et al.
patent: 4366080 (1982-12-01), Mizunoya et al.
patent: 4640795 (1987-02-01), Ogawa et al.
patent: 4864008 (1989-09-01), Marata et al.
patent: 5067797 (1991-11-01), Yokokura et al.
patent: 5122296 (1992-06-01), Johten et al.

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