Liquid crystal display device

Details Liquid crystal display device Liquid crystal display device

1985-12-06

1987-09-15

Corbin, John K.

Compositions

Radioactive compositions

Nuclear reactor fuel

25229901, 350341, 350346, G02F 1137

Patent

active

046935622

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 96.degree. and 108.degree. along a direction of thickness thereof, absorption axes of a pair of polarizing plates disposed on the upper and lower substrates constitute an angle between 63.degree. and 73.degree., and a product .DELTA.n.multidot.d of a thickness d (.mu.m) and an optical anisotropy .DELTA.n of a liquid crystal layer falls within a range from 0.69 .mu.m to 0.79 .mu.m.

REFERENCES:
patent: 4418987 (1983-12-01), Takanashi et al.
patent: 4522436 (1985-11-01), Kozaki et al.
patent: 4522468 (1985-06-01), Goscianski
patent: 4609255 (1986-09-01), Leenhouts et al.

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