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公开(公告)号：US5102576A
公开(公告)日：1992-04-07
申请号：US608739
申请日：1990-11-05
CPC分类号： C09K19/46 , C09K19/3441 , C09K19/42 , C09K19/44
摘要： A ferroelectric liquid crystal composition comprising achiral smectic liquid crystal compounds(s) and optically active compounds and, which composition comprises the following components A, B and C in 50-91%, 4-30% and 5-20%, each by weight, respectively:Component A: at least one of compounds of the formula (A) having smectic C phase ##STR1## R.sup.1 and R.sup.2 each are same or different, linear or branched alkyl, alkoxy or alkanoyloxy each of 1-18 C, X is H, halogen or CN, l, m and n each one 1 or 2 and the sum of l, m and n is 1 or 2,component B: at least one of optically active compounds of the formula (B): ##STR2## and component C: at least one of optically active compounds of the formula ##STR3## wherein each R.sup.3 and R.sup.5 is a linear or branched alkyl or alkoxy of 1-18C, each R.sup.4 and R.sup.6 is a linear or branched alkyl of 2-18C or a linear or branched alkoxy of 1-18C, each Y and Z is H, halogen or CN k is 0 or 1 and * is asymmetric C, the compounds having the same sense of Ps in chiral smectic C phase, induced when dissolved in smectic C liquid crystal.
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公开(公告)号：US5106531A
公开(公告)日：1992-04-21
申请号：US476878
申请日：1990-02-07
申请人： Katsuyuki Murashiro , Makoto Kikuchi , Mitsuyoshi Ichihashi , Kanetsugu Terashima , Masaharu Seki
发明人： Katsuyuki Murashiro , Makoto Kikuchi , Mitsuyoshi Ichihashi , Kanetsugu Terashima , Masaharu Seki
CPC分类号： C09K19/3458
摘要： The present invention provides a ferroelectric liquid crystal composition which can exhibit an S.sub.C * phase in an extensive temperature range inclusive of room temperature and which has quick response properties and a large tilt angle, and it also provides a switching element containing the above-mentioned ferroelectric liquid crystal composition and having excellent response properties.The present invention is connected with a ferroelectric liquid crystal composition comprising at least one component A and at least one component B described hereinafter, the content of said component A being from 30 to 95% by weight, the content of said component B being from 5 to 50% by weight,said component A being a compound represented by the formula (I) ##STR1## wherein R.sup.1 is an alkoxy group having 3 to 14 carbon atoms, k is an integer of 1 and R.sup.2 is an optically active group,said component B being a ferroelectric liquid crystal compound having a spontaneous polarization of 10 nCcm.sup.-2 or more.
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公开(公告)号：US5427714A
公开(公告)日：1995-06-27
申请号：US096848
申请日：1993-07-26
CPC分类号： C07D239/26 , C09K19/3463
摘要： A ferroelectric liquid crystal composition having a SC* phase and a light-switching element using the composition are provided, which composition comprises the following components, A, B and C, each in a specified proportion: Component A has the formula ##STR1## wherein ##STR2## R.sup.1 and R.sup.2 are same or different linear or branched alkyl, alkoxy or alkanoyloxy of 1-18C, X is H, halogen or CN, l, m and n are 0 or 1 and (l+m+n) is 1 or 2, and has smectic C phase;Component B has the formula ##STR3## wherein ##STR4## Y is H, halogen or CN, k is 0 or 1, R.sup.3 is linear or branched alkyl or alkoxy of 1-18C, and * is asymmetric C, and consists of optically active compounds having the same senses of Ps in SC* phase induced when dissolved in smectic C liquid crystal, to one another; andComponent C has the formula ##STR5## wherein ##STR6## Z is H, halogen or CN, R.sup.5 and R.sup.6 are same or different linear or branched alkyl or alkoxy of 1-18C R.sup.4 is 12-18C alkyl or 1-18C linear or branched alkoxy, and * is asymmetric C, and is an optically active compound having the same sense of Ps in SC* phase induced when dissolved in smectic C liquid crystal as that of the compound of component B.
摘要翻译： 提供具有SC *相的铁电液晶组合物和使用该组合物的光开关元件，该组成包含以下组分，A，B和C各自为特定比例：组分A具有式“IMAGE”（ A）其中R1和R2是1-18C的相同或不同的直链或支链烷基，烷氧基或烷酰氧基，X是H，卤素或CN，l，m和n是0或1，并且（1+ m + n）为1或2，具有近晶C相; 组分B具有式（B）其中
或CN，k为0或1，R3为1-18C的直链或支链烷基或烷氧基，*为不对称C，并由具有 在溶解在近晶C液晶中时，在SC *相中诱导的Ps的相同感觉; 并且组分C具有其中 的公式 （C） -
公开(公告)号：US5240638A
公开(公告)日：1993-08-31
申请号：US908854
申请日：1992-07-01
CPC分类号： C09K19/46 , C09K19/0225 , C09K19/3441
摘要： A ferroelectric liquid crystal composition comprising smectic liquid crystal composition(s) and optically active compounds and having a spontaneous polarization value of 20 nC cm.sup.-2 or less and nevertheless having high rate response properties, and a light-switching element are provided, which composition comprises the following components (A), (B), (C) and (D), in 76-95, 2-10, 1-6 and 2-8 wt.%, respectively, based on the total quantity of the 4 components:(A): at least one compound of the formula ##STR1## wherein R.sup.1 and R.sup.2 are the same or different, being 1-18C alkyl, or the formula ##STR2## wherein R.sup.3 and R.sup.4 are the same or different, being 1-18C alkyl or alkoxy and having smectic C phase:(B): an optically active compound of the formula ##STR3## wherein R.sup.5 is 1-18C alkyl or alkoxy, X is ##STR4## Y is halogen or H and * is asymmetric C atom; (C): at least one optically active compound of the formulas ##STR5## wherein R.sup.6 and R.sup.8 are 1-18C alkyl or alkoxy, R.sup.7 and R.sup.9 are 2-18C alkyl or alkoxy and * is an asymmetric C atom; and(D): at least on optically active compound formula ##STR6## wherein R.sup.10 is 1-18 C alkyl or alkoxy, Z is H or halogen and * is an asymmetric C atom.
摘要翻译： 提供了包含近晶型液晶组合物和光学活性化合物并且具有20nC cm -2以下的自发极化值并且具有高速率响应特性的铁电液晶组合物和光开关元件，该组成 包括以下组分（A），（B），（C）和（D），分别为76-95，2-10,1-6和2-8重量％，基于4 组分：（A）：至少一种式（I）的化合物，其中R 1和R 2相同或不同，为1-18C烷基或式（II），其中R 3和R 4为 相同或不同的是1-18C烷基或烷氧基并具有近晶C相：（B）：下式的光学活性化合物其中R5是1-18C烷基或烷氧基，X是Y 是卤素或H，*是不对称C原子; （IV）2a或图像（IV）中的至少一种光学活性化合物（IV-1a）图像（IV-1b） （IV-2b）其中R6和R8为1-18C烷基或烷氧基，R7和R9为2-18C烷基或烷氧基，*为不对称C原子; 和（D）：至少在光学活性化合物式“IMAGE”，1CHC2H5 + RE（V）其中R10为1-18C烷基或烷氧基，Z为H或卤素，*为不对称C原子。
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5.发明授权
公开(公告)号：US5294367A
公开(公告)日：1994-03-15
申请号：US881719
申请日：1992-05-12
摘要： A ferroelectric liquid crystal composition is provided exhibiting an Sc* phase over a wide temperature range including room temperature and having a spontaneous polarization value of 30 nC/cm.sup.2 or less and a quick response, time. An optical switching element comprising the ferroelectric liquid crystal composition is also provided. The ferroelectric liquid crystal composition comprises components A, B, C and D in respective amounts by weight of 75 to 95%, 3 to 9%, and 3 to 12% and 2 to 5% based on the total amount of these components and having a phase sequence series of an isotropic liquid, a cholesteric phase, a smectic A phase and a chiral smectic C phase in that order from the high temperature side and a spontaneous polarization value of 30 nC/cm.sup.2 or less.The component A is at least one compound selected from the group consisting of compounds represented by the general formulae: ##STR1## The component B is at least one compound selected from the group consisting of compounds represented by the general formulae: ##STR2## The component C is at least one compound selected from the group consisting of compounds represented by the general formula: ##STR3## In the above formulae, R.sup.1 to R.sup.10, X, m, n and * are as defined in the claims.
摘要翻译： 提供一种铁电液晶组合物，其在包括室温的宽温度范围内具有30nC / cm 2以下的自发极化值和快速响应时间的Sc *相。 还提供了包括铁电液晶组合物的光学开关元件。 所述强电介质液晶组合物包含组分A，B，C和D各自的量为75至95％，3至9％，3至12％和2至5％，基于这些组分的总量，并具有 各向同性液体，胆甾醇相，近晶A相和手性近晶C相的相序列，从高温侧开始，自发极化值为30nC / cm 2以下。 组分A是选自由以下通式表示的化合物中的至少一种化合物：（*化学结构*）和（*化学结构*）组分B是至少一种选自化合物 通式：（*化学结构*）（*化学结构*）和（*化学结构*）（*化学结构*）组分C是选自由通式 （*化学结构*）在上式中，R 1至R 10，X，m，n和*如权利要求中所定义。
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6.发明授权
公开(公告)号：US5188761A
公开(公告)日：1993-02-23
申请号：US505154
申请日：1990-04-05
摘要： A ferroelectric liquid crystal composition, exhibiting an Sc* phase over a wide temperature range including room temperature and having a spontaneous polarization value of 30 nc/cm.sup.2 or less and a quick response time, is provided. An optical switching element, comprising the ferroelectric liquid crystal composition, is also provided. The ferroelectric liquid crystal composition comprises three components A, B and C in respective amount by weight of 75 to 95%, 3 to 9% and 3 to 12% based on the total amount of these components and having a phase sequence series of Iso-N*-Sa-Sc*. Component A is at least one compound selected from the group consisting of the compounds represented by the general formulae: ##STR1## The component B is at least one compound selected from the group consisting of compounds represented by the general formulae: ##STR2## The component C is at least one compound selected from the group consisting of compounds represented by the general formulae: ##STR3## In the above formulae, R.sup.1 to R.sup.10, X, m, n and * are as defined in the claims.
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公开(公告)号：US5108651A
公开(公告)日：1992-04-28
申请号：US285521
申请日：1988-12-16
申请人： Kanetsugu Terashima , Mitsuyoshi Ichihashi , Makoto Kikuchi , Fusayuki Takeshita , Kenji Furukawa
发明人： Kanetsugu Terashima , Mitsuyoshi Ichihashi , Makoto Kikuchi , Fusayuki Takeshita , Kenji Furukawa
CPC分类号： C09K19/46 , C09K19/3068 , C09K19/44
摘要： A ferroelectric liquid crystal composition having a negative large dielectric anisotropy value, AC stabilizing effect at low voltages and yet high-speed response properties, and a light switching element using the composition are provided, which composition comprises at least two components at least one of which is a compound expressed by the formula ##STR1## wherein R.sup.3 and R.sup.4 each represent the same or different linear or branched alkyl group of 1-18C and l is 1 or 2, and having a negative dielectric anisotropy value.A preferred embodiment of the above composition contains at least three components A, B and C, one of which is the above compound of the formula (A) and components B and C of which are each selected from a group of specified compounds, and the respective proportions of components A, B and C being 5-50 weight %, 20-70 weight % and 5-40 weight % based on the total weight of the three, respectively.
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公开(公告)号：US5053163A
公开(公告)日：1991-10-01
申请号：US359719
申请日：1989-05-31
申请人： Fusayuki Takeshita , Makoto Kikuchi , Mitsuyoshi Ichihashi , Kanetsugu Terashima , Kenji Furukawa
发明人： Fusayuki Takeshita , Makoto Kikuchi , Mitsuyoshi Ichihashi , Kanetsugu Terashima , Kenji Furukawa
IPC分类号： C07D237/08 , C07D237/14 , C09K19/34 , C09K19/42 , C09K19/46 , G02F1/137 , G02F1/141
CPC分类号： C09K19/46 , C09K19/3455 , C09K19/42
摘要： A ferroelectric liquid crystal composition having a negative dielectric anisotropy, a good AC-stabilizing effect and still high-speed response properties, and a light switching element, are provided, which composition comprises a compound expressed by the formula ##STR1## wherein R.sup.1 and R.sup.2 each represent a linear or branched alkyl group, alkoxy group, alkanoyloxy group, alkoxycarbonyl group, alkoxycarbonyloxy group or alkanoyl group each of 1 to 18 carbon atoms; ##STR2## X.sub.1, X.sub.2 and X.sub.3 each represent hydrogen atom or halogen atom; P and Q each represent 0 or 1; and P+Q is 0 or 1.
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公开(公告)号：US5919397A
公开(公告)日：1999-07-06
申请号：US850866
申请日：1997-05-02
申请人： Mitsuyoshi Ichihashi , Kanetsugu Terashima , Makoto Kikuchi , Fusayuki Takeshita , Kenji Furakawa
发明人： Mitsuyoshi Ichihashi , Kanetsugu Terashima , Makoto Kikuchi , Fusayuki Takeshita , Kenji Furakawa
IPC分类号： G02F1/137 , C09K19/20 , C09K19/42 , C09K19/44 , C09K19/46 , G02F1/13 , G02F1/141 , C09K19/12 , C09K19/52
CPC分类号： C09K19/2021
摘要： A ferroelectric liquid crystal composition exhibiting a novel chiral smectic phase is disclosed. In this novel phase, a director of liquid crystal molecules may settle in a third stable state which is distinguished from known bistable states of liquid crystal molecules in a ferroelectric chiral smectic C phase. By using this composition in a display element, a dichromatic display having a quick response can be provided on a third-colored display ground by applying a controlled electric field across the composition.
摘要翻译： 公开了具有新型手性近晶相的铁电液晶组合物。 在这个新颖的阶段，液晶分子的导向器可以沉淀在与铁电手性近晶C相中液晶分子的已知双稳态不同的第三稳定状态。 通过在显示元件中使用该组合物，通过在组合物上施加受控电场，可以在第三色显示器地面上提供具有快速响应的二色显示器。
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公开(公告)号：US5149461A
公开(公告)日：1992-09-22
申请号：US733183
申请日：1991-07-19
申请人： Kanetsugu Terashima , Mitsuyoshi Ichihashi , Makoto Kikuchi , Fusayuki Takeshita , Kenji Furukawa
发明人： Kanetsugu Terashima , Mitsuyoshi Ichihashi , Makoto Kikuchi , Fusayuki Takeshita , Kenji Furukawa
CPC分类号： C09K19/46 , C09K19/04 , C09K19/3441
摘要： A ferroelectric liquid crystal composition is here provided which contains at least one chiral compound having an optical activity site group represented by the general formula (I) ##STR1## wherein R.sup.1 is a straight-chain or branched alkyl group or alkoxy group having 1 to 18 carbon atoms, and * indicates an asymmetric carbon atom, and at least one non-chiral compound having a smectic C phase, a smectic I phase, a smectic F phase, a smectic G phase, a smectic H phase, a smectic J phase or a smectic K phase. This composition has quick response properties and assumes an SC* phase in an extensive temperature range inclusive of room temperature. Furthermore, by using this composition, an optical switching element having quick responsiveness can be obtained.
摘要翻译： 这里提供一种铁电液晶组合物，其含有至少一种具有由通式（I）表示的光学活性位点基团的手性化合物，其中R1是直链或支链烷基或具有 1〜18个碳原子，*表示不对称碳原子，以及至少一种具有近晶C相，近晶I相，近晶F相，近晶G相，近晶H相，近晶相的非手性化合物 J相或近晶相。 该组合物具有快速的响应特性并且在包括室温的广泛温度范围内呈现SC *相。 此外，通过使用该组合物，可以获得具有快速响应性的光学开关元件。
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