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    • 5. 发明授权
    • Phenyl triester compound and anti-ferroelectric liquid crystal composition containing the same
    • 苯基三酯化合物和含有它的反铁电液晶组合物
    • US06217954B1
    • 2001-04-17
    • US09413482
    • 1999-10-06
    • Yuki MotoyamaTakahiro MatsumotoMasahiro JohnoTomoyuki Yui
    • Yuki MotoyamaTakahiro MatsumotoMasahiro JohnoTomoyuki Yui
    • C09K1912
    • C09K19/0266C07C69/90C09K19/2021Y10T428/10
    • An anti-ferroelectric liquid crystal composition containing a phenyl triester compound of the formula (1), wherein R1 is a linear alkyl group having 6 to 12 carbon atoms, m is an integer of 0 to 3, n is an integer of 1 to 3, and X1 is a hydrogen atom or a fluorine atom, and an anti-ferroelectric liquid crystal compound of the formula (2),  wherein R2 is a linear alkyl group having 6 to 12 carbon atoms, X2 is a hydrogen atom or a fluorine atom, A is —CH3 or —CF3, r is 0 or 1 and C* is an asymmetric carbon, provided that when A is —CH3, r is 0 and p is an integer of 4 to 10, that when A is —CF3 and when r is 0, p is an integer of 6 to 8, and further than when A is —CF3 and when r is 1, q is an integer of 5 to 8 and p is 2 or 4. The phenyl triester compound and anti-ferroelectric liquid crystal compound composition is not only improved in response speed but also shows remarkably controlled layer rotation, and it can achieve a simple matrix liquid crystal display device which is free of a change in contrast and is highly reliable in use for a long period of time.
    • 一种含有式(1)的苯基三酯化合物的反铁电液晶组合物,其中,R 1为碳原子数6〜12的直链烷基,m为0〜3的整数,n为1〜3的整数。 ,X 1为氢原子或氟原子,式(2)的反铁电液晶化合物,其中,R2为碳原子数6〜12的直链烷基,X2为氢原子或氟原子 A为-CH 3或-CF 3,r为0或1,C *为不对称碳,条件是当A为-CH 3时,r为0,p为4至10的整数,当A为-CF 3和 当r为0时,p为6至8的整数,并且当A为-CF 3时,当r为1时,q为5至8的整数,p为2或4.苯基三酯化合物和抗 - 铁电液晶化合物组合物不仅提高了响应速度,而且显示出显着控制的层旋转,并且可以实现简单的矩阵液晶显示装置,其不含ch 相比之下,在长时间使用中是高度可靠的。
    • 8. 发明授权
    • Liquid crystal composition
    • 液晶组成
    • US06372308B1
    • 2002-04-16
    • US09521956
    • 2000-03-09
    • Yasue YoshiokaMasahiro JohnoTomoyuki YuiTakahiro Matsumoto
    • Yasue YoshiokaMasahiro JohnoTomoyuki YuiTakahiro Matsumoto
    • C09K1912
    • C09K19/0266C09K19/2021Y10T428/10
    • A liquid crystal composition includes (1) an anti-ferroelectric liquid crystal compound of formula (1) and (2) a ferrielectric liquid crystal compound or racemic compound thereof. The composition ratio of (1) to (2) is in the range extending from a value which extends from within 5 mol % of the boundary compositional ratio on the anti-ferroelectric phase side and to within 25 mol % of the boundary compositional ratio on the ferrielectric phase side. The boundary compositional ratio is obtained on the basis of a liquid crystal phase diagram prepared on the basis of conoscopic image observations obtained by changing the mixing ratio of (1) and (2). The liquid crystal composition has the following properties: (b) an optical response in a positive voltage region and a negative voltage region and free or substantially free of hysteresis; and (c) excellent alignment stability. The liquid crystal composition is substantially free from sticking, is excellent in alignment and alignment stability and exhibits a V-letter-shaped optical response so that it can be used in a highly reliable active matrix liquid crystal display device.
    • 液晶组合物包括(1)式(1)的反铁电液晶化合物和(2)电介质液晶化合物或其外消旋化合物。 (1)〜(2)的组成比在从反铁电相侧的边界成分比例的5摩尔%以内的值延伸到边界成分比的25摩尔%以下的范围内 电介质相侧。 基于通过改变(1)和(2)的混合比获得的虹膜图像观察准备的液晶相图获得边界组成比。 液晶组合物具有以下性质:(b)在正电压区域和负电压区域中的光学响应,并且具有自由或基本上没有迟滞; 和(c)极好的取向稳定性。 液晶组合物基本上没有粘附,对准和取向稳定性优异,呈V字形的光学响应,因此可用于高可靠性的有源矩阵液晶显示装置。
    • 10. 发明授权
    • Anti-ferroelectric liquid crystal cell
    • 反铁电液晶电池
    • US6151095A
    • 2000-11-21
    • US194203
    • 1998-11-20
    • Yasushi SuzukiAkira SuguroTomoyuki YuiMasahiro JohnoTakahiro Matsumoto
    • Yasushi SuzukiAkira SuguroTomoyuki YuiMasahiro JohnoTakahiro Matsumoto
    • C09K19/02C09K19/20G02F1/133G02F1/141C09K19/12
    • C09K19/0266C09K19/2021G02F1/141G02F1/13306G02F2001/1412
    • An antiferroelectric liquid crystal cell having a high-speed response and wide viewing angle characteristic free of an image sticking phenomenon is provided. This antiferroelectric liquid crystal cell is composed of an antiferroelectric liquid crystal material held between a pair of parallel substrates. The antiferroelectric liquid crystal material filled between the parallel substrates has such a characteristic that when a sinusoidal voltage value with a changing reference frequency is applied to the antiferroelectric liquid crystal cell, the imaginary part of the complex dielectric constant obtained by Fourier transform of the output voltage value output from the antiferroelectric liquid crystal cell has no local maximum value within the reference frequency range of 100 Hz to 5 kHz. In other words, this characteristic is similar to a characteristic such that when the real part and the imaginary part of the complex dielectric constant are plotted by using a Cole--Cole plot for each frequency, a characteristic curve having no local maximum value within the reference frequency range of 100 Hz to 5 kHz is obtained.
    • PCT No.PCT / JP98 / 01195 Sec。 371日期:1998年11月20日 102(e)1998年11月20日日期PCT 1998年3月19日PCT PCT。 WO98 / 42801 PCT出版物 日期1998年10月1日提供了具有无图像残留现象的高速响应和宽视角特征的反铁电液晶单元。 该反铁电液晶单元由保持在一对平行基板之间的反铁电液晶材料构成。 填充在平行基板之间的反铁电液晶材料具有以下特征:当将具有变化的基准频率的正弦电压值施加到反铁电液晶单元时,通过傅里叶变换输出电压获得的复介电常数的虚部 来自反铁电液晶单元的输出值在100Hz至5kHz的参考频率范围内没有局部最大值。 换句话说,该特性类似于这样的特性,即当通过使用每个频率的Cole-Cole绘图绘制复介电常数的实部和虚部时,在参考中没有局部最大值的特性曲线 获得100Hz至5kHz的频率范围。