Method of driving optical modulation device

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

1995-05-19

1997-01-07

Hjerpe, Richard

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345208, G09G 318

Patent

active

055921922

ABSTRACT:
A liquid crystal apparatus comprises a liquid crystal device having scanning electrodes arranged in a matrix with and spaced apart from signal electrodes with a liquid crystal showing different stable states in accordance with different applied voltages and having a memory function disposed therebetween. First drive circuitry selects and sequentially drives the scanning electrodes by application of a scanning selection signal, and second drive circuitry drives the signal electrodes by application of a writing voltage and a first non-writing voltage corresponding to display contents in synchronism with the application of the scanning selection signal. The first drive circuitry applies reset voltages to the pixels of the liquid crystal to make orientation of the liquid crystal's molecules uniform before the selection of the scanning electrode. The amplitude of a writing voltage applied to an intersection of the selected scanning electrode and a selected signal electrode is two or more times that of a first non-writing voltage applied to an intersection of a nonselected scanning electrode and the selected signal electrode.

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: 4021798 (1977-03-01), Kojima 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: 4608558 (1986-08-01), Amstutz et al.
patent: 4638310 (1987-01-01), Ayliffe
patent: 4639722 (1987-01-01), Urabe et al.
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).
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).
Chem. Abstracts, vol. 93: 58615r.
Chem. Abstracts, vol. 94: 56716w.
Chem. Abstracts, vol. 94: 166242w.
Chem. Abstracts, vol. 95: 89702n.
Chem. Abstracts, vol. 98: 26192n.
Chem. Abstracts, vol. 99: 14059g.
Chem. Abstracts, vol. 99: 222188a.
Chem. Abstracts, vol. 96: 133710k.
Chem. Abstracts, vol. 97: 47754s.
Chem. Abstracts, vol. 97: 171523e.
Chem. Abstracts, vol. 97: 228104e.

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-1768200