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    • 3. 发明授权
    • Liquid crystal device providing tilt angle inclination angle and ps
satisfying relationships at 55 degrees
    • 提供倾斜角度倾斜角度的液晶装置和满足55度关系的ps
    • US5629788A
    • 1997-05-13
    • US174440
    • 1993-12-28
    • Shosei MoriMasataka YamashitaKazuharu KatagiriMasahiro TeradaSyuji YamadaHiroshi Mizuno
    • Shosei MoriMasataka YamashitaKazuharu KatagiriMasahiro TeradaSyuji YamadaHiroshi Mizuno
    • G02F1/141G02F1/13
    • G02F1/141
    • A liquid crystal device including: a pair of substrates and a chiral smectic liquid crystal disposed between the pair of substrates. Each of the pair of substrates has an electrode for applying a voltage to the liquid crystal. The pair of substrates is provided with respective uniaxial alignment axes extending in directions which are parallel to each other or intersect each other at a prescribed angle. The chiral smectic liquid crystal is placed in such an alignment state that the liquid crystal assumes at least two stable states and provides a pretilt angle .alpha. (degrees), a tilt angle H (degrees), an inclination angle .delta. (degrees) of the liquid crystal layer, and an apparent tilt angle .theta.a satisfying the following relationships (I) and (II) in a temperature range of 10.degree.-55.degree. C.:H .theta.a>H/2 (II).The liquid crystal provides a tilt angle H (degrees), an inclination angle .delta. (degrees) of the liquid crystal layer, and a spontaneous polarization Ps (nC/cm.sup.2) satisfying the following relationships (III) and (IV) at 55.degree. C.:H.times..delta.>70 (III), andH.times..delta./Ps>20 (IV).
    • 一种液晶装置,包括:一对基板和设置在所述一对基板之间的手性近晶液晶。 一对基板中的每一个具有用于向液晶施加电压的电极。 一对基板设置有相互平行的方向上延伸的相应的单轴对准轴线或以规定的角度彼此相交。 手性近晶液晶被置于液晶呈现至少两个稳定状态的对准状态,并提供预倾角α(度),倾角+ E,crc H + EE(度),倾斜角度 (度)和在10 -5℃的温度范围内满足以下关系式(I)和(II)的表观倾斜角θa:+ E,crc H +EEα+ δ和δ<α(I),+ E,crc H + EE> theta> + E,crc H + EE / 2(II)。 液晶提供倾斜角+ E,crc H + EE(度),液晶层的倾斜角度(度)和满足以下关系式(III)和(III)的自发极化Ps(nC / cm 2) IV)在55℃:+ E,crc H + EE×δ> 70(III)和+ E,crc H + EE×δ/ Ps> 20(IV)。