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    • 5. 发明公开
    • Liquid crystal device and display apparatus
    • 液晶装置和显示装置
    • EP0556603A1
    • 1993-08-25
    • EP93101166.2
    • 1993-01-27
    • CANON KABUSHIKI KAISHA
    • Hanyu, YukioMihara, TadashiKodera, YasutoNakamura, Katsutoshi
    • G02F1/137G02F1/1337
    • G02F1/1416G02F2001/133746
    • A chiral smectic liquid crystal device is constituted by a chiral smectic liquid crystal, and a pair of substrates sandwiching the liquid crystal with their opposite surfaces that are provided with electrodes for applying a voltage to the liquid crystal and uniaxial alignment axes which are parallel or substantially parallel to each other and identical in direction. The liquid crystal device is provided with excellent bistability and freeness from "burning" if the liquid crystal is placed in the alignment state characterized in that (A) a relationship of α > Ⓗ is satisfied, wherein α denotes a pretilt angle and Ⓗ denotes a tilt angle, respectively, of the liquid crystal and (B) the liquid crystal provides at least two stable states of optical axes which form an angle 2ϑa therebetween satisfying Ⓗ > ϑa > Ⓗ /2.
    • 一种手性近晶型液晶装置由手性近晶型液晶和一对夹持液晶的基板构成,所述液晶的相对表面设置有用于向液晶施加电压的电极以及平行或基本平行的单轴取向轴 相互平行且方向相同。 如果液晶处于取向状态,其特征在于(A)满足α> relationship的关系,其中α表示预倾角,并且◎表示一个预倾斜角度,所述液晶装置具有优良的双稳定性和“燃烧” (B)液晶提供至少两个稳定状态的光轴,它们之间形成角度2θa,满足Ⓗ>θa>Ⓗ/ 2。