Liquid crystal display device having a chiral additive and angul

Details Liquid crystal display device having a chiral additive and angul Liquid crystal display device having a chiral additive and angul

1986-03-12

1987-05-12

Corbin, John K.

350347E, 350337, G02F 113

Patent

active

046644822

ABSTRACT:
A liquid crystal display device wherein a nematic liquid crystal having a positive dielectric anisotropy and added with a chiral material is sealed between a pair of upper and lower substrates so as to constitute a helical structure twisted within a range between 200.degree. and 260.degree. along a direction of thickness thereof, and polarizing axes or absorption axes of a pair of polarizing plates disposed on the upper and lower substrates are angularly displaced by a predetermined angle or predetermined angles from major axes of liquid crystal molecules adjacent to the upper and lower substrates, respectively.

REFERENCES:
patent: 4398805 (1983-08-01), Cole
patent: 4579425 (1986-04-01), Ishii et al.
patent: 4596446 (1986-06-01), Waters et al.
Ishibashi, T. et al., "On the Multiplexing of the Phase Change Type Color LCD," 1980 IEEE Biennial Display Research Conference (Oct. 1980) pp. 186-188.

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