Method of driving ferroelectric liquid crystal optical modulatio

Details Method of driving ferroelectric liquid crystal optical modulatio Method of driving ferroelectric liquid crystal optical modulatio

1987-12-21

1995-09-05

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359100, 345 89, 345 97, G02F 11343, G02F 113, G09G 336

Patent

active

054483832

ABSTRACT:
A driving method for an optical modulation device is applicable to driving of an optical modulation device, e.g. a liquid crystal device having a matrix electrode arrangement comprising a group of scanning electrodes, a group of signal electrodes oppositely spaced from the group of scanning electrodes, and an optical modulation material (e.g. a liquid crystal) showing bistability with respect to an electric filed applied thereto disposed between the groups of scanning electrodes and signal electrodes. The driving method is featured by applying a voltage allowing the liquid crystal having bistability to be oriented to a first stable state (one optically stable state) between a selected scanning electrode of the group of scanning electrodes and a selected signal electrode of the group of signal electrodes, and by applying a voltage allowing the liquid crystal having bistability to be oriented to a second stable state (the other optically stable state) between the selected scanning electrodes and non-selected signal electrodes; or by applying a voltage allowing the optical modulation material having bistabity to be oriented to a first stable state between a selected scanning electrode and the group of signal electrodes, applying a voltage allowing the liquid crystal oriented to the first stable state to be oriented to a second stable state between the selected scanning electrode and a selected signal electrode, and applying a voltage set to a value between a threshold voltage -V.sub.th2 (for the second stable state) and a threshold voltage V.sub.th1 (for the first stable state) between non-selected scanning electrodes and the group of signal electrodes.

REFERENCES:
patent: 3776615 (1973-12-01), Tsukamoto et al.
patent: 3835463 (1974-09-01), Tsukamoto et al.
patent: 3909804 (1975-09-01), Kaji et al.
patent: 3911421 (1975-10-01), Alt et al.
patent: 3936815 (1976-02-01), Kogure et al.
patent: 3973252 (1976-08-01), Mitomo et al.
patent: 3995942 (1976-12-01), Kawakami et al.
patent: 4040720 (1977-08-01), York
patent: 4040721 (1977-08-01), Kurita
patent: 4060801 (1977-11-01), Stein et al.
patent: 4062626 (1977-12-01), Kawakami et al.
patent: 4082430 (1978-04-01), Schulthess et al.
patent: 4117472 (1978-09-01), Freer et al.
patent: 4180813 (1979-12-01), Yoneda
patent: 4187505 (1980-02-01), Morley et al.
patent: 4206459 (1980-06-01), Houryu et al.
patent: 4290686 (1981-09-01), Suzuki et al.
patent: 4342994 (1982-08-01), Lorteije
patent: 4367924 (1983-01-01), Clark et al.
patent: 4372871 (1983-02-01), Toriyama et al.
patent: 4404555 (1983-09-01), Long et al.
patent: 4419664 (1983-12-01), Crossland et al.
patent: 4427978 (1984-01-01), Williams
patent: 4443062 (1984-04-01), Togashi et al.
patent: 4508429 (1985-04-01), Nagae et al.
patent: 4511926 (1985-04-01), Crossland et al.
patent: 4529271 (1985-07-01), Berreman et al.
patent: 4548476 (1985-10-01), Kaneko
patent: 4563059 (1986-01-01), Clark et al.
patent: 4571585 (1986-02-01), Stein et al.
patent: 4638310 (1987-01-01), Ayliffe
patent: 4655561 (1987-04-01), Kanbe et al.
patent: 4693563 (1987-09-01), Harada et al.
patent: 4701026 (1987-10-01), Yazaki et al.
patent: 4711531 (1987-12-01), Masubuchi
patent: 4715688 (1987-12-01), Harada et al.
patent: 4725129 (1988-02-01), Kondo et al.
Clark et al., "Submicrosecond bistable electro-optic switching in liquid crystals", Appl. Phys. Lett., vol. 36, No. 11, pp. 899-901, Jun. 1980.
"Ferroelectric Liquid Crystals", Meyer et al., J. de Physique, vol. 36, pp. L-69-71 (Mar. 1975).
Robert et al., "Multiplexing Techniques for Liquid Crystal Displays", IEEE Transactions on Electron Devices, vol. ED-24, No. 6, pp. 694-697 (Jun. 1977).
Chem. Abstracts, vol. 93: 58615r, 1980.
Chem. Abstracts, vol. 94: 56716w, 1981.
Chem. Abstracts, vol. 94: 166242w, 1981.
Chem. Abstracts, vol. 95: 89702n, 1981.
Chem. Abstracts., vol. 96: 133710k, 1982.
Chem. Abstracts, vol. 97: 47754s, 1982.
Chem. Abstracts, vol. 97: 171523e, 1982.
Chem. Abstracts, vol. 97: 228104a, 1982.
Chem. Abstracts, vol. 98: 26192n, 1983.
Chem. Abstracts, vol. 99: 14059g, 1983.
Chem. Abstracts, vol. 99: 222188a, 1983.
Uemoto et al., "Ferroelectric Properties of Chiral Smectic Liquid Crystal", Japanese J. of Applied Physics, vol. 18, No. 7, Jul. 1979, at 1261-1265.
Handschy et al., "Stroboscopic Microscopy of Fast Electro-Optic Switching in Ferroelectric Smectic C Liquid Crystals", Appl. Phys. Lett. 41(1), 1 Jul. 1982, at 39-41.
Clark et al., "Ferroelectric Liquid Crystal Electro-Optics Using the Surface Stabilized Structure", Molecular Crystals and Liquid Crystals, vol. 94, Nos. 1 & 2, at 213-233 (1983).

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