Liquid crystal display device with particular angle between opti

Details Liquid crystal display device with particular angle between opti Liquid crystal display device with particular angle between opti

1991-04-09

1993-05-18

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 73, 359102, G02F 113, G02F 11335

Patent

active

052128199

ABSTRACT:
A super twisted nematic liquid crystal display device includes a liquid crystal cell, upper and lower polarizing plates, and at least one phase difference plate between the polarizing plates. The angle between the direction of the optical axis of the phase difference plate and the observation direction of the device is set between about 0.degree.-30.degree. or 60.degree.-90.degree..

REFERENCES:
patent: 4844569 (1989-07-01), Wada et al.
patent: 4852976 (1989-08-01), Suzuki
patent: 4889412 (1989-12-01), Clerc et al.
patent: 4909606 (1990-03-01), Wada et al.
patent: 4957349 (1990-09-01), Clerc et al.
patent: 5016988 (1991-05-01), Iimura
Ohgawara et al., "A Color STN Display with Two Retardation Compensating Films", 1989 SID International Symposium, Digest of Technical Papers, First Edition, May, 1989, pp. 390-392.

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