Driving method for optical modulation device

Details Driving method for optical modulation device Driving method for optical modulation device

1986-12-23

1990-06-12

Miller, Stanley D.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

350333, 340784, G02F 113

Patent

active

049327593

ABSTRACT:
An optical modulation device includes scanning electrodes and signal electrodes disposed opposite to and intersecting with the signal electrodes, and an optical modulation material disposed between the electrodes, a pixel being formed at each intersection of the electrodes so as to provide a matrix of pixels as a whole and having a contrast depending on the polarity of a voltage applied thereto. The device is driven by a method including, in a writing period for writing in the respective pixels on a selected scanning electrode: at least two repeating sets of phases, each set of phases comprising a state-determining phase for determining the contrast of a pixel and an auxiliary phase for not determining the contrast of the pixel.

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