Multiplexed driving method for an electrooptical device, and cir

Details Multiplexed driving method for an electrooptical device, and cir Multiplexed driving method for an electrooptical device, and cir

1990-03-13

1993-10-12

Oberley, Alvin E.

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345210, G09G 336

Patent

active

052529541

ABSTRACT:
A driving method is provided for an electrooptical device having scanning and signal electrodes arranged in a matrix with a plurality of picture elements formed in association with intersections of the electrodes. Voltages of high-frequency pulses are applied to both the scanning and signal electrodes, and a DC voltage pulse for setting the optical state of the electrooptical material is applied to the picture elements during a selected period for the scanning electrodes, while a high-frequency AC voltage for holding the previously set optical state of the electrooptical material is applied to the picture elements during a non-selected period for the scanning electrodes. A circuit is also provided for carrying out the method, and an electrooptical apparatus is provided employing the electrooptical device described above.

REFERENCES:
patent: 4746196 (1988-05-01), Umeda et al.
patent: 4769659 (1988-09-01), Umeda et al.
patent: 4834510 (1989-05-01), Fujita
patent: 4907859 (1990-03-01), Takada et al.
patent: 5041821 (1991-08-01), Onitsuka et al.
National Technical Report, vol. 33, No. 1, Feb. 1987, pp. 44-50.

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