Reflective liquid crystal display device with twist angle betwee

Optical: systems and elements – Holographic system or element – Using a hologram as an optical element

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359102, 359 70, G02F 113

Patent

active

054900034

ABSTRACT:
To obtain a monotonic transmission/voltage characteristic curve in a reflective display having a small twist angle, the polarizer in a cell with crossed polarizer and analyzer is arranged parallel to the dividing line of the directions of orientation (23, 24) determining the twist angle .alpha., the cell being optimized for .alpha. and d..DELTA.n.

REFERENCES:
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patent: 4896947 (1990-01-01), Leenhouts
patent: 4999619 (1991-03-01), Te Velde
patent: 5105289 (1992-04-01), Sonehara et al.
patent: 5139340 (1992-08-01), Okumura
patent: 5249071 (1993-09-01), Yoshimizo et al.
Sonehara et al., "A New Twisted Nematic Electrically Controlled Bisefringent (TN-ECB) Made for a Reflective Light Valve", Proceedings of the SID, vol. 31/2, 1990.

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