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    • 26. 发明授权
    • Liquid crystal device having two bistable orientation states in the
chiral smectic temperature range
    • 液晶装置在手性近晶温度范围内具有两个双稳态取向状态
    • US5076671A
    • 1991-12-31
    • US451364
    • 1989-12-15
    • Toshiharu UchimiAkio YoshidaKazuya IshiwataTakashi Enomoto
    • Toshiharu UchimiAkio YoshidaKazuya IshiwataTakashi Enomoto
    • G02F1/1337G02F1/141
    • G02F1/141G02F1/1337
    • A liquid crystal device includes a pair of substrates with a orientation controlling film being provided on at least one of the substrates through a base layer, and a ferroelectric smectic liquid crystal which is disposed between the substrates. The orientation controlling film has a uniaxial orientation processing axis. The ferroelectric smectic liquid crystal generates two different stable orientation states at high and low temperatures regions within the temperature range achieving the ferroelectric smectic phase. The ferroelectric smectic liquid crystal is in one of the two stable orientation states which is generated at the low temperature region when the liquid crystal in the other stable orientation state generated at the high temperature region cools. Where d is the thickness of the orientation controlling film and S is the average surface roughness of the base layer, d and S have the relation expressed by0.ltoreq.S/d
    • 液晶装置包括:一对基板,其具有通过基底层在至少一个基板上设置的取向控制膜,以及设置在基板之间的铁电体相液晶。 取向控制膜具有单轴取向处理轴。 铁电层状液晶在实现铁电近晶相的温度范围内的高温和低温区产生两种不同的稳定取向状态。 当在高温区域产生的另一个稳定取向状态的液晶冷却时,铁电体系液晶处于在低温区域产生的两种稳定取向状态之一。 其中d是取向控制膜的厚度,S是基层的平均表面粗糙度,d和S具有由0