Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1992-11-09
1998-10-20
Lao, Lun-Yi
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 94, 345 97, 345208, G09G 318
Patent
active
058253467
ABSTRACT:
A matrix of display elements are driven on a time sharing basis to switch between two optically distinct states in response to a pulse train applied to the selected display elements. The pulse train includes display control pulses having a duration and electric field effective to set the display elements to the desired optically distinct state, does not allow, after the application of the display control pulse, existence of a pulse which would change the optical state, and also includes a plurality of pulses having the same pulse shapes in different polarities. AC pulses which hold the optical state are applied to the display elements after the application of the display control pulse. The AC pulses are obtained by superposing high frequency AC pulses to the AC pulses having an amplitude lower than the display control pulse.
REFERENCES:
patent: 3835463 (1974-09-01), Tsukamoto et al.
patent: 3976362 (1976-08-01), Kawakami
patent: 3995942 (1976-12-01), Kawakami et al.
patent: 4317115 (1982-02-01), Kawakami et al.
patent: 4367924 (1983-01-01), Clark et al.
patent: 4380008 (1983-04-01), Kawakami et al.
patent: 4427978 (1984-01-01), Williams
patent: 4508429 (1985-04-01), Nagae et al.
patent: 4548476 (1985-10-01), Koneko
patent: 4563059 (1986-01-01), Clark et al.
patent: 4638310 (1987-01-01), Ayliffe
patent: 4655550 (1987-04-01), Crossland et al.
patent: 4655561 (1987-04-01), Kanbe et al.
patent: 4668051 (1987-05-01), Mourey et al.
patent: 4701026 (1987-10-01), Yazaki et al.
patent: 4715688 (1987-12-01), Harada et al.
patent: 4725129 (1988-02-01), Kondo et al.
patent: 4728947 (1988-03-01), Ayliffe et al.
patent: 4729642 (1988-03-01), Kaneko
patent: 4746196 (1988-05-01), Umeda et al.
Fousek et al., "Ferroelectric Liquid Crystals: Structure and Field Induced Processes", Ferroelectrics, vol. 53, Nos. 1/2/3/4 (1984), pp. 71-80.
Harada et al., "An Application of Chiral Smectic-C Liquid Crystal to a Multiplexed Large-Area Display", Society of Information Display (SID) 85 Digest, vol. XVI, Apr. 1985, pp. 131-134.
Mol. Cryst. Liq. Cryst., vol. 75, pp. 249-286, 1981, PH. Martinot-Lagarde et al., "Temperature Dependence of Tilt, Pitch and Polarization in Ferroelectric Liquid Crystals".
Lao Lun-Yi
Seiko Precision Inc.
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