Method of driving optical modulation device

Details Method of driving optical modulation device Method of driving optical modulation device

1995-06-05

1997-12-09

Chow, Dennis-Doon

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 97, G09G 336

Patent

active

056965257

ABSTRACT:
A liquid crystal apparatus comprises a liquid crystal device comprising a group of scanning electrodes and a group of signal electrodes intersecting each other to form an electrode matrix, and a chiral smectic liquid crystal disposed so as to form a picture element at each intersection of the scanning electrodes and the signal electrodes. Drive means is also provided for: (a) applying a scanning selection signal and a scanning non-selection signal to the scanning electrodes, the scanning selection signed comprising a voltage of one polarity and and a voltage of the other polarity, respectively with reference to a voltage level of the scanning non-selection signal, and being sequentially applied to the respective scanning electrodes; (b) in a period of applying the one or the other polarity, applying signals including a first signal and a second signal to the signal electrodes for causing the one or another orientation state of the chiral smectic liquid crystal; (c) applying to picture elements a DC bias voltage equal to a voltage difference between the voltage level of the scanning non-selection signal and a voltage applied to a signal electrode not receiving the data signal; and (d) periodically applying the scanning selection signal to the scanning 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: 4319237 (1982-03-01), Matsuo 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: 4413256 (1983-11-01), Yasuda 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. 839-901, Jun. 1980.
Meyer et al., "Ferroelectric Liquid Crystals", 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.
Chem. Abstracts, vol. 94: 56716w.
Chem. Abstracts, vol. 94: 166242w.
Chem. Abstracts, vol. 95: 89702n.
Chem. Abstracts, vol. 96: 133710k.
Chem. Abstracts, vol. 97: 47754s.
Chem. Abstracts, vol. 97: 171523e.
Chem. Abstracts, vol. 97: 228104a.
Chem. Abstracts, vol. 98: 26192n.
Chem. Abstracts, vol. 99: 14059g.
Chem. Abstracts, vol. 99: 222188a.
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 Crustals, vol. 94, Nos. 1 & 2, at 213-233 (1983).

Affiliated with

Also associated with

Rating

Method of driving optical modulation device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of driving optical modulation device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of driving optical modulation device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1611204