Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1994-12-27
1997-09-23
Powell, Mark R.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 95, 345 97, 359 56, 359 63, 359103, 359104, G06F 300
Patent
active
056709781
ABSTRACT:
In a liquid crystal thick cell light modulator using ferroelectric liquid crystal, a series of voltage pulses with an asymmetrical duty ratio (that is, duty ratio of 55-85%) is applied between a pair of electrode plates containing the ferroelectric liquid crystal. In another liquid crystal thick cell light modulator using ferroelectric liquid crystal, a DC bias voltage is added to the voltage pulses, where the magnitude of the DC bias voltage is 20-50% of the half amplitude of the voltage pulses. In still another liquid crystal thick cell light modulator, the gap length between the electrode plates is larger than 50 .mu.m, and the helical pitch in smectic C phase of the ferroelectric liquid crystal is 0.7 to 0.95 times the gap length.
REFERENCES:
patent: 4508429 (1985-04-01), Nagae et al.
patent: 4773738 (1988-09-01), Hayakawa et al.
patent: 4943387 (1990-07-01), Furukawa et al.
patent: 4952335 (1990-08-01), Furukawa et al.
patent: 5013137 (1991-05-01), Tsuboyama et al.
patent: 5046830 (1991-09-01), Nakanowatari
patent: 5061047 (1991-10-01), Bradshaw et al.
patent: 5204660 (1993-04-01), Kamagami et al.
patent: 5327273 (1994-07-01), Beresnev et al.
Ferroelectrics. Aug. 1984, UK. vol. 58/59, No. 1-4/1-2, ISSN 0015-0193. pp.
Yoshino K et al. "Transient light scattering by domain switching in ferroelectric liquid crystal and its application as fast opto-electronics device".
Molecular Crystals and Liquid Crystals. May 1987, UK. vol. 146, ISSN 0026-8941, pp. 251-264.
Ozaki M et al. "Characteristics of transient light scattering in ferroelectric liquid crystals".
Patent Abstracts of Japan, vol. 011 No. 112 (P-565). 9 Apr. 1987 & JP-A-61 260227 (Katsumi Yoshino) 18 Nov.1966.
Patent Abstracts of Japan, vol. 010 No. 132 (P-456).16 May 1986 & JP-A-60 254120 (Katsumi Yoshino: Others:01) 14 Dec. 1985.
Patent Abstracts of Japan. vol. 010 No. 052 (P-432), 28 Feb. 1986 & JP-A-60 195521 Katsumi Yoshino) 4 Oct. 1985.
Ferroelectrics. Aug. 1984, UK, vol. 58/59. No. 1-4/1-2, ISSN 0015-0193. pp.
Yoshino K et al "Transient light scattering by domain switching in ferroeletric liquid crystal and its application as fast opto-electronics device".
Molecular Crystals and Liquid Crystals, May 1987, UK, vol. 146, ISSN 0026-8941, pp. 251-254 Ozaki M et al. "Characteristics of transient light scattering in ferroelectric liquid crystrals".
Proceedings of the Sixth International Meeting on Ferroelectricity, Kobe, Japan. 12-16 Aug. 1985. Japanese Journal of Applied Physics, Supplement 24-2, 1985, Japan. pp. 130-133 Yoshino K et al. "Characteristics of transient light scattering in ferroelectric liquid crystals as functions of molecular structure. cell thickness and temperature and their applications".
Patent Abstracts of Japan, vol. 011 No. 112 (P-565), 9 Apr. 1987 & JP-A-61 260227 (Katsumi Yoshino) 18 Nov. 1986.
Patent Abstracts of Japan, vol. 010 No. 132 (P-456). 16 May 1986 & JP-A-60 254120 (Katsumi Yoshino: Others:01) 14 Dec. 1985.
Patent Abstracts of Japan, vol. 010, No. 052 (P-432). 28 Feb. 1985 & JP-A-60 195521 Katsumi Yoshino) 4 Oct. 1985.
Kita Jun-ichi
Kobayashi Junya
Powell Mark R.
Shimadzu Corporation
Vail Seth D.
LandOfFree
Light modulator using an asymetrically-driven ferroelectric liqu does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Light modulator using an asymetrically-driven ferroelectric liqu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light modulator using an asymetrically-driven ferroelectric liqu will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1940061