Liquid crystal display device with residual retardation compensa

Details Liquid crystal display device with residual retardation compensa Liquid crystal display device with residual retardation compensa

1992-11-06

1996-05-21

Gross, Anita Pellman

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 93, G02F 11335, G02F 1137

Patent

active

055195237

ABSTRACT:
A liquid crystal display device comprising: (a) a liquid crystal layer arranged between substrates each having an electrode; (b) a pair of polarizers arranged so as to sandwich the liquid crystal layer; (c) a birefringent medium arranged between the liquid crystal layer and at least one of the polarizers, when a voltage is applied so that liquid crystal molecules at boundary regions facing said substrates have different tilt angles from other molecules, retardation in said birefringent medium being equal or close to remaining retardation due to the liquid crystal molecules at boundary regions, and the slow axis of said birefringent medium being set for an angle to compensate for said remaining retardation; and (d) control means for changing transmission of said liquid crystal layer by applying voltages of two or more values between said electrodes.

REFERENCES:
patent: 4387133 (1983-06-01), Ichikawa et al.
patent: 4609255 (1986-09-01), Leenhouts et al.
patent: 4802742 (1989-02-01), Ichikawa et al.
patent: 4844569 (1989-07-01), Wada et al.
patent: 4952030 (1990-08-01), Nakagawa et al.
patent: 4973137 (1990-11-01), Kozaki
patent: 5032008 (1991-07-01), Yamamoto et al.
patent: 5119220 (1992-06-01), Narita et al.
patent: 5126866 (1992-06-01), Yoshimizu et al.
patent: 5157529 (1992-10-01), Koopman et al.
patent: 5187603 (1993-02-01), Bos
patent: 5196953 (1993-03-01), Yeh et al.
Kondo et al., "Application of a stress plate modulator to birefringence measurements in Transparent films", SEN-I Gakkai, vol. 36, No. 11 (1980), pp. 45-51.

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