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Liquid crystal device with composition containing optically active material and material showing smectic, smectic A and chiral smectic C phases upon temperature decrease
Liquid crystal device with composition containing optically active material and material showing smectic, smectic A and chiral smectic C phases upon temperature decrease
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机译:包含光学活性材料和在温度降低时显示近晶,近晶A和手性近晶C相的材料的液晶装置
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摘要
A liquid crystal device is constituted by (a) a pair of base plates each having an orientation control film thereon, and (b) a liquid crystal composition interposed between the base plates. The liquid crystal composition comprises a mixture including at least one liquid crystal compound which has a temperature range in which it shows chiral smectic phase and at least one optically active substance which does not have a temperature range in which it shows chiral smectic phase. The liquid crystal composition has a temperature range in which it shows cholesteric phase and is placed in chiral smectic phase which has been formed through cholesteric phase on temperature decrease. The liquid crystal composition comprises liquid crystal molecules having long axes forming a pre-tilt in the chiral smectic phase.
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