Liquid crystal device with grey scale

Details Liquid crystal device with grey scale Liquid crystal device with grey scale

1990-08-03

1991-11-05

James, Andrew J.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 96, 359 99, G02F 113

Patent

active

050626914

ABSTRACT:
A ferroelectric liquid crystal device comprising a transparent substrate, an opposed substrate, the substrates disposed to provide a non-helicoidal alignment of the ferroelectric liquid crystal material, a ferroelectric liquid crystal material disposed between the substrates and electrodes on the substrates to define one or a plurality of pixels, each pixel exhibiting controlled continuously variable light transmission as a function of applied field and wherein the molecular orientation of the liquid crystal material is continuously variable and controllable.

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Lagerwall, S. T., Wahl, J. & Clark, N. A. "Ferroelectric Liquid Crystals for Displays", 1985, Int'l Display Research Conf., pp. 213-221.
Ross, P. W., "720.times.400 Matrix Ferroelectric Display Operating at Video Frame Rate", 1988 Int'l Display Research Fonf., pp. 185-190.
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Clark, N. A., et al., "Modulators, Linear Arrays, and Matrix Arrays Using Ferroelectric Liquid Crystals", Proceedings of Soc. for Information Display vol. 26, 1985, pp. 133-139.
Tomikawa, T., "An identification of Pseudo Continuous Tone by Labeling", Conference Record of the 1988 International Display Research Conf., pp. 146-159.
Leroux, T., et al., "Black and White FLC TV Panel with Grey Lelels", 1988 Int'l Display Research Conf., pp. 111-113.
Ferroelectrics, vol. 76, 1987, pp 221-232 (J. Pavel, M. Glogarova & S. S. Bawa).
Physical Review A, vol. 35, No. 10, May 15, 1987, pp. 4378-4388 (R. J. Cava. J. S. Patel, K. R. Collen, J. W. Goodby, & E. A. Rietman).
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