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    • 9. 发明授权
    • Method of driving a ferroelectric liquid crystal display
    • 驱动铁电液晶显示器的方法
    • US5555110A
    • 1996-09-10
    • US167357
    • 1993-12-15
    • Toshimitsu KonumaTakeshi NishiHarumi Mori
    • Toshimitsu KonumaTakeshi NishiHarumi Mori
    • G09G3/20G09G3/36G02F1/133
    • G09G3/3651G09G3/2011G09G3/207
    • A liquid crystal electro-optical device comprising a ferroelectric liquid crystal material having spontaneous polarization. The liquid crystal material is sandwiched between substrates having TFTs thereon. When the liquid crystal material is driven with the TFTs, the TFTs apply a voltage in different polarities to switch the material between first and second states. This voltage for switching is required to be larger than the voltage that is necessary to maintain the present state of the liquid crystal material. To facilitate switching, the threshold value for inversion of the ferroelectric liquid crystal material preferably has a small value of 0.1 to 4 V. Preferably, the liquid crystal material shows uniform orientation or multi-microdomain orientation. There is also disclosed a liquid crystal electro-optical device comprising a liquid crystal material having spontaneous polarization. The liquid crystal material is sandwiched between transparent substrates having electrodes thereon. An orienting means is provided on one of the substrates surfaces which are in contact with the liquid crystal material to orient the liquid crystal material along one axis. When no voltage is applied from the electrodes to the liquid crystal material, the spontaneous polarization shows splay orientation between the substrates. When a voltage is applied, the spontaneous polarization shows uniform orientation.
    • 一种具有自发极化的铁电液晶材料的液晶电光装置。 液晶材料夹在其上具有TFT的基板之间。 当用TFT驱动液晶材料时,TFT施加不同极性的电压以在第一和第二状态之间切换材料。 该开关用电压要大于维持液晶材料的现状所必需的电压。 为了便于切换,铁电液晶材料的反转阈值优选为0.1〜4V的较小值。优选地,液晶材料显示均匀取向或多微区取向。 还公开了一种包括具有自发极化的液晶材料的液晶电光装置。 液晶材料夹在其上具有电极的透明基板之间。 在与液晶材料接触的一个基板表面上设置定向装置,以使液晶材料沿一个轴线定向。 当没有电压从电极施加到液晶材料时,自发极化显示出基板之间的喷射取向。 当施加电压时,自发极化显示均匀的取向。