| 摘要 |
PURPOSE:To obtain a liquid crystal light quantity modulating element having a high response speed and a high contrast ratio by subjecting a liquid crystal composition having a high twisting property to twisting orientation between a pair of transparent electrode substrates. CONSTITUTION:A pair of transparent electrode substrates are subjected to the surface treatment where liquid crystal molecules are oriented in a certain direction, and these substrates are arranged to face each other, and the liquid crystal composition which is adjusted to have 90 deg.-180 deg. natural twisting orientation with a thickness set by the gap between transparent electrode substrates is oriented twistingly at 90 deg. between transparent electrode substrates. Rotating materials are added more than adjustment of a normally used twisted nematic liquid crystal to obtain the liquid crystal composition having a high twisting property. The fall response speed of this element is hardly affected by an applied voltage and a frequency, and the element is driven sharply by voltage modulation or frequency modulation.
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