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    • 25. 发明授权
    • Ferroelectric liquid crystal device with specific pitch in each of a
cholesteric and a smectic phase
    • 在每个胆甾型和近晶相中具有特定间距的铁电液晶器件
    • US5046830A
    • 1991-09-10
    • US649117
    • 1991-01-28
    • Jun Nakanowatari
    • Jun Nakanowatari
    • G02F1/1337C09K19/02G02F1/133
    • C09K19/0225
    • A ferroelectric liquid crystal device, in which orientation is applied for either one of both or two substrates having transparent electrodes formed thereon for arranging the liquid crystal molecules in parallel with the substrate and a ferroelectric crystal is filled into the gap between two sheets of the substrates, wherein the ferroelectric liquid crystal has a helical texture pitch in the smectic phase not less than 1 um and not greater than 3.5 micrometers, while having a pitch in the cholesteric phase of not less than 25 micrometers. Also, the length of the gap between the substrates ranges from 6 to 13 micrometers. The light scattering type liquid crystal device capable of storing the state of display and displaying a large picture area at high contrast can be obtained.
    • 对于在其上形成有透明电极的两个或两个基板中的任一个的基板和与铁基电极平行的方向施加取向的铁电液晶装置被填充到两片基板之间的间隙中 其中所述铁电液晶在近晶相中具有不小于1μm且不大于3.5微米的螺旋结构间距,而在胆甾醇相中的间距不小于25微米。 此外,基板之间的间隙的长度为6至13微米。 可以获得能够存储显示状态并且显示高对比度的大图像区域的光散射型液晶装置。