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公开(公告)号：US4754051A
公开(公告)日：1988-06-28
申请号：US912474
申请日：1986-09-29
CPC分类号： C09K19/586 , C09K19/58
摘要： A novel optically active compound of the formula ##STR1## is capable of forming a chiral nematic liquid crystal composition having short spiral pitch by adding a small amount of it to a generally nematic liquid crystal composition. The compound of this invention is useful in the manufacture of SBE display device which is excellent especially in high level multiplexing driving system.
摘要翻译： 式（IMAGE）的新颖光学活性化合物能够通过向普通向列型液晶组合物中加入少量螺旋形螺旋形的手性向列型液晶组合物而形成。 本发明的化合物可用于制造SBE显示装置，其特别是在高级多路复用驱动系统中是优异的。
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公开(公告)号：US4961874A
公开(公告)日：1990-10-09
申请号：US269817
申请日：1988-11-10
IPC分类号： C07C43/215 , C09K19/18 , C09K19/30
CPC分类号： C07C43/215 , C09K19/18 , C09K19/3059
摘要： Novel optically active tolan derivative represented by the general formula (I) and process for preparing thereof; ##STR1## (wherein all the symbols are the same as defined in the appended claims) are disclosed. These are effective for use in preparation of liquid crystal material capable of effectively preventing the formation of the cross-talk phenomenon due to changes due to temperature in the high level multiplexing driving system.
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公开(公告)号：US4814516A
公开(公告)日：1989-03-21
申请号：US61242
申请日：1987-06-15
IPC分类号： C07C43/215 , C09K19/18 , C09K19/30 , C09K19/52 , C09K19/06
CPC分类号： C07C43/215 , C09K19/18 , C09K19/3059
摘要： Optically active tolan compounds of the formula ##STR1## wherein R and R' are straight chain alkyl and n is 0 or 1, are useful in the preparation of liquid crystalline materials capable of effectively preventing cross-talk due to temperature changes in high level, multiplexing driving systems.
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4.发明授权
公开(公告)号：US4880936A
公开(公告)日：1989-11-14
申请号：US172923
申请日：1988-03-25
IPC分类号： C07D213/30 , C09K19/34
CPC分类号： C07D213/30 , C09K19/3444
摘要： An optically active compound represented by formula (I): ##STR1## wherein R represents a straight chain alkyl group having from 2 to 12 carbon atoms; R' represents a straight chain alkyl or alkoxy group having from 1 to 20 carbon atoms; C represents an asymmetric carbon atom; A represents ##STR2## and X and Y each represents a hydrogen atom or a fluorine atom, provided that X and Y do not simultaneously represent a fluorine atom. The compound (I) reduces a temperature dependence of the threshold voltage of a nematic liquid crystal composition when added thereto in a small amount.
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公开(公告)号：US4764636A
公开(公告)日：1988-08-16
申请号：US926706
申请日：1986-10-31
IPC分类号： C07C69/76 , C07D239/26 , C09K19/30 , C09K19/34 , G02F1/13
CPC分类号： C07D239/26 , C09K19/3003 , C09K19/3059 , C09K19/3463
摘要： An optically active benzoic ester derivative represented by the general formula: ##STR1## wherein R represents a straight chain alkyl group having from 1 to 20 carbon atoms; R' represents a straight chain alkyl group having from 2 to 8 carbon atoms; rings A and B each represents ##STR2## or a trans-1,4-cyclohexane ring; n represents 0 or 1; and C represents an asymmetric carbon atoms. The compounds of formula (I) are capable of providing a chiral nematic liquid crystal composition having a short spiral pitch when added to a nematic liquid crystal composition in a small amount and are useful in the production of SBE display devices having excellent performances in a high level multiplexing driving system.
摘要翻译： 由以下通式表示的光学活性苯甲酸酯衍生物：其中R表示具有1至20个碳原子的直链烷基; R'表示具有2至8个碳原子的直链烷基; 环A和B各自表示
或反式-1,4-环己烷环; n表示0或1; C表示不对称碳原子。 式（I）的化合物能够提供一种当向向列型液晶组合物中少量添加时具有短的螺旋间距的手性向列型液晶组合物，并且可用于生产具有优异性能的SBE显示装置 级多路复用驱动系统。 -
公开(公告)号：US5304323A
公开(公告)日：1994-04-19
申请号：US984279
申请日：1992-12-01
申请人： Yoshi Arai , Toru Fujisawa , Kiyohumi Takeuchi , Haruyoshi Takatsu , Koichiro Adachi , Hiroshi Ogawa , Kazunori Maruyama
发明人： Yoshi Arai , Toru Fujisawa , Kiyohumi Takeuchi , Haruyoshi Takatsu , Koichiro Adachi , Hiroshi Ogawa , Kazunori Maruyama
IPC分类号： C09K19/54 , G02F1/1334 , C09K19/52 , G02F1/13
CPC分类号： C09K19/542 , G02F1/1334 , G02F2001/13345
摘要： A liquid crystal device comprising a pair of substrate, at least one of them being transparent, and a light-control layer supported therebetween, wherein said light-control layer comprises a liquid crystal material showing positive dielectric anisotropy and a transparent solid substance, said liquid crystal material forming a continuous phase, and said transparent solid substance existing in said continuous phase in the form of dispersed particles or a three-dimensional network. The device exhibits a clear threshold voltage, a high fast response time and a highly contrast display with a low applied voltage.
摘要翻译： 一种液晶装置，包括一对基板，其中至少一个是透明的，并且支撑在其间的光控层，其中所述光控层包括显示正介电各向异性的液晶材料和透明固体物质，所述液体 形成连续相的晶体材料，所述透明固体物质以分散颗粒或三维网络的形式存在于所述连续相中。 该器件具有清晰的阈值电压，高的快速响应时间和低施加电压的高对比度显示。
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公开(公告)号：US5089629A
公开(公告)日：1992-02-18
申请号：US565790
申请日：1990-08-13
IPC分类号： C07C25/18 , C07D317/72 , C09K19/30
CPC分类号： C07D317/72 , C07C25/18 , C09K19/3098
摘要： A compound represented by formula (I): ##STR1## wherein wherein R represents a straight chain alkyl group having from 1 to 9 carbon atoms; ##STR2## represents ##STR3## X represents a hydrogen atom or a fluorine atom; and ##STR4## has a trans (equatorial-equatorial) configuration, is disclosed. The compound of formula (I) exhibits a nematic phase in the vicinity of room temperature or in a temperature range higher than room temperature and has a small optical anisotropy and a positive dielectric anisotropy and is, therefore, useful in preparing a liquid crystal display cell excellent in viewing-angle characteristics.
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公开(公告)号：US4814523A
公开(公告)日：1989-03-21
申请号：US195326
申请日：1988-05-18
CPC分类号： C07C25/18 , C09K19/3003
摘要： A tetracyclic nematic liquid crystal compound of the following formula: ##STR1## wherein R represents a straight-chained alkyl group carrying one to seven carbon atoms; and ##STR2## has a trans (equatorial-equatorial) configuration; is disclosed. This compound has a high N-I transition temperature and a low S-N transition temperature and is highly useful as an electro-optical display material.
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公开(公告)号：US4946986A
公开(公告)日：1990-08-07
申请号：US315874
申请日：1989-02-27
IPC分类号： C07C13/28 , C07C25/18 , C07C255/50 , C09K19/30
CPC分类号： C07C255/50 , C07C13/28 , C07C25/18 , C09K19/3098 , C07C2101/16
摘要： A novel tetracyclic cyclohexylcyclohexene derivatives represented by formula: ##STR1## wherein ##STR2## n, X and Y are as defined in claim 1, are disclosed. The compounds are useful as electroptic display materials.
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公开(公告)号：US4698177A
公开(公告)日：1987-10-06
申请号：US850585
申请日：1986-04-11
CPC分类号： C07C13/28 , C09K19/3098
摘要： A compound represented by the general formula ##STR1## wherein R denotes a linear alkyl group having 1 to 9 carbon atoms, A denotes ##STR2## denotes a linear alkyl group having 1 to 9 carbon atoms, and each cyclohexane ring is arranged in a trans-(equatorial-equatorial) form.
摘要翻译： 由通式
表示的化合物，其中R表示具有1至9个碳原子的直链烷基，A表示 表示具有1至9个碳原子的直链烷基，并且每个环己烷环以反式 - （赤道赤道）形式。
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