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公开(公告)号：US5110496A
公开(公告)日：1992-05-05
申请号：US663313
申请日：1991-03-01
IPC分类号： C09K19/34
CPC分类号： C09K19/3463
摘要： An optically active liquid crystal compound which is represented by the formula: ##STR1## wherein R.sub.1 and R.sub.2 each represents an alkyl or aralkyl group of 4-18 carbon atoms, R.sub.3 represents a haloalkyl group, X represents O, COO, OCO, CO or a single bond, Y represents COO, OCO, CH.sub.2 O or OCH.sub.2, Z represents COO or O, (A) represents a cyclic group shown by ##STR2## (B) represents a cyclic group shown by ##STR3## and l shows that the cyclic groups are substituted by at least one halogen atom.
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公开(公告)号：US5202054A
公开(公告)日：1993-04-13
申请号：US646898
申请日：1991-01-28
IPC分类号： G02F1/13 , C07D239/26 , C09K19/34
CPC分类号： C07D239/26 , C09K19/3463
摘要： A liquid crystal compound represented by formula (I): ##STR1## wherein R.sub.1 represents an alkyl group having from 1 to 18 carbon atoms; R.sub.2 represents an optically active group represented by formula (II), (III) or (IV): ##STR2## wherein R.sub.3 represents a lower halo-alkyl group having from 1 to 2 carbon atoms; X represents --O--, --COO--, --OCO-- or a single bond; Y represents --CH.sub.2 O-- or --COO--; and Z represents --COO-- or --O--, l represents 0 or 1, provided that when l is 0, Y is a single bond; n represents an integer of from 1 to 18; and * indicates an optically active center. The compound exhibits three stable states of molecular orientation.
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公开(公告)号：US5207947A
公开(公告)日：1993-05-04
申请号：US713143
申请日：1991-06-11
申请人： Yoshiichi Suzuki , Noriko Yamakawa , Yoshihiko Aihara , Hiroyuki Mogamiya , Toru Ooide , Tadaaki Isozaki , Yuvra Negi , Shigenori Sakuma
发明人： Yoshiichi Suzuki , Noriko Yamakawa , Yoshihiko Aihara , Hiroyuki Mogamiya , Toru Ooide , Tadaaki Isozaki , Yuvra Negi , Shigenori Sakuma
CPC分类号： C09K19/0266 , C07C69/88 , C07C69/92 , C07C69/94 , C09K19/2021 , C09K19/322
摘要： Liquid crystal compound of the formula ##STR1## wherein R.sub.1 and R.sub.2 each is a C.sub.1-18 alkyl group or an aralkyl group, R' is a haloalkyl group, X is --0--, --CO--, --COO-- or direct bond, Y is --COO--, --OCO-- or --CH.sub.2 O--, (A) and (B) each is ##STR2## and p and l each is zero or one.
摘要翻译： 其中R1和R2各自为C1-18烷基或芳烷基，R'为卤代烷基，X为-O-，-CO-，-COO-或直接键的式 Y是-COO-，-OCO-或-CH2O-，（A）和（B）各自为
，p和l分别为零或一。 -
4.发明授权
公开(公告)号：US5344586A
公开(公告)日：1994-09-06
申请号：US63687
申请日：1993-05-20
IPC分类号： C07C327/32 , C09K19/02 , C09K19/28 , C09K19/32 , C09K19/20 , C07C323/62 , C09K19/12
CPC分类号： C09K19/0266 , C07C327/32 , C09K19/28 , C09K19/322
摘要： A novel antiferroelectric liquid crystal compound is disclosed which is represented by the following formula: ##STR1## wherein R.sup.1 and R.sup.2 are independently selected from C.sub.3 -C.sub.18 alkyl groups, respectively, Rf is a lower fluoroalkyl group, X is a group selected from the group consisting of --O--, --COO--, --OCO--, and --CO--, or a single bond, (A) and (B) each is a group independently selected from the group consisting of phenyl, biphenyl, and naphthalene group which may be substituted with a halogen atom, and C having an asterisk indicates an asynunetric carbon atom. A process for producing the antiferroelectric liquid crystal compound is also disclosed.
摘要翻译： 公开了一种新的反铁电液晶化合物，其由下式表示：其中R 1和R 2分别独立地选自C 3 -C 18烷基，R f为低级氟代烷基，X为选自 由-O-，-COO-，-OCO-和-CO-或单键组成，（A）和（B）各自是独立地选自苯基，联苯基和萘基的基团，其中 可以被卤原子取代，具有星号的C表示异氰酸酯原子。 还公开了一种制造反铁电液晶化合物的方法。
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公开(公告)号：US5424005A
公开(公告)日：1995-06-13
申请号：US906470
申请日：1992-06-30
IPC分类号： C07C69/773 , C09K19/02 , C09K19/20 , C09K19/12 , C07C69/76
CPC分类号： C09K19/2021 , C09K19/0266
摘要： A composition of (R)-isomer and (S)-isomer of a liquid crystal compound represented by the formula; ##STR1## wherein X represents --O-- or a direct bond, Z represents a halogen-substituted alkyl group selected from a group consisting of --CF.sub.3, --CHF.sub.2, --CH.sub.2 F, --C.sub.2 F.sub.5, --CClF.sub.2, -CCl.sub.2 F, --CCl.sub.2 CF.sub.3, and --C.sub.3 F.sub.7, m represents an integer of from 1 to 20, n represents an integer of from 1 to 20, and * represents an asymmetric carbon, and the optical purity of said composition is high enough to exhibit optically tristable states in S*(3) phase when electric voltage is applied.
摘要翻译： 由式表示的液晶化合物的（R） - 异构体和（S） - 异构体的组合物; 烷基，Z表示选自-CF 3，-CHF 2，-CH 2 F，-C 2 F 5，-CClF 2，-CCl 2 F，-CCl 2 CF 3和-C 3 F 7的卤素取代的烷基，m表示1〜20的整数 ，n表示1〜20的整数，*表示不对称碳，并且当施加电压时，所述组合物的光学纯度足够高以在S *（3）相中呈现光学三态。
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6.发明授权
公开(公告)号：US5346648A
公开(公告)日：1994-09-13
申请号：US128106
申请日：1993-09-29
CPC分类号： C09K19/0266 , C09K19/2007 , C09K19/2021 , C09K19/32 , C09K19/322
摘要： An antiferroelectric liquid crystal compound represented by the following general formula (I): ##STR1## wherein R.sup.1 and R.sup.2 are each independently selected from the group consisting of alkyl groups having from 3 to 18 carbon atoms, Rf is a lower alkyl group or a fluorinated lower alkyl group, (A) and (B) are each independently selected from the group consisting of 1,4-phenylene, 4,4'-biphenylene, and 2,6-naphthalene which may be substituted at least with a halogen atom, and * shows an asymmetric carbon atom.
摘要翻译： 由以下通式（I）表示的反铁电液晶化合物：其中R 1和R 2各自独立地选自具有3至18个碳原子的烷基，R f是低级烷基或氟化 低级烷基，（A）和（B）各自独立地选自可以至少被卤素原子取代的1,4-亚苯基，4,4'-亚联苯基和2,6-萘， 和*表示不对称碳原子。
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公开(公告)号：US5184847A
公开(公告)日：1993-02-09
申请号：US785877
申请日：1991-11-04
CPC分类号： C09K19/0266 , C09K19/2021
摘要： Ferrelectric chiral smetic liquid crystal compound are provided which have the formula, for example ##STR1## wherein R is a C.sub.1-20 alkyl group.
摘要翻译： 提供了具有下式的电介质手性硅溶液化合物，例如
或 其中R是C 1-20烷基。 -
公开(公告)号：US5051527A
公开(公告)日：1991-09-24
申请号：US316831
申请日：1989-02-28
CPC分类号： C09K19/2021 , C09K19/0403 , C09K2019/0407 , C09K2019/0444
摘要： The invention lies in novel ferroelectric liquid crystal compounds particularly represented by the general formulae, having a good responsibility in relation to the applied electric field and a wide range of phase transition points inclusive of the room temperature so as to be useful alone as the liquid crystal material but also to be mixed with other liquid crystal compounds for expanding the phase transition points to a desired range and making the response speed of the liquid crystal composition faster. ##STR1## In the formulae, m and n are same or different with each other and represent an integral of 1-20.
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公开(公告)号：US5110498A
公开(公告)日：1992-05-05
申请号：US634631
申请日：1990-12-27
CPC分类号： C09K19/0266 , C07C69/90 , C07C69/92 , C09K19/2021
摘要： A liquid crystal compound represented by formula (I): ##STR1## wherein R.sub.1 represents an alkyl group having from 3 to 18 carbon atoms or an aralkyl group having from 7 to 18 carbon atoms; R.sub.2 represents an alkenyl group having from 1 to 18 (preferably from 3 to 14) carbon atoms; R.sub.3 represents CF.sub.3 or C.sub.2 F.sub.5 ; X represents a single bond, --O--, --COO--, or --OCO--; Y represents --COO--, --OCO--, --CH.sub.2 O--, or --OCH.sub.2 --; A and B each represents a cyclic group; and * indicates an optically active center.The compound of formula (I) exhibits three stable states of molecular orientation.
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10.发明授权
公开(公告)号：US5046823A
公开(公告)日：1991-09-10
申请号：US328363
申请日：1989-03-24
申请人： Kahoru Mori , Yuichiro Yamada , Norio Yamamoto , Masao Tokunaga , Ichiro Kawamura , Yoshiichi Suzuki , Takashi Hagiwara , Yoshihiko Aihara , Noriko Yamakawa , Shigenori Sakuma
发明人： Kahoru Mori , Yuichiro Yamada , Norio Yamamoto , Masao Tokunaga , Ichiro Kawamura , Yoshiichi Suzuki , Takashi Hagiwara , Yoshihiko Aihara , Noriko Yamakawa , Shigenori Sakuma
CPC分类号： C09K19/2028 , C09K19/2021 , G02F1/141 , G09G3/3633 , G09G3/3681 , G09G3/3692 , G09G2310/06 , G09G2310/061
摘要： There is disclosed herein a ferroelectric liquid crystal electro-optical apparatus of the maxtrix type comprising a liquid crystal cell having first and second electrode substrates which include n striped line electrodes and m striped column electrodes, respectively, facing at right angles each other. A ferroelectric liquid crystal is put in therebetween so as to form n by m indication picture elements. Also included in the apparatus a scanning drive device adapted to supply a scanning signal and a data signal to the n striped line electrodes and the m striped column electrodes, respectively. The ferroelectric liquid crystal shows three stable states in accordance with an application voltage and has a light transmittance with a hysteresis sufficient to a dynamic drive in accordance with increase or decrease in the application voltage in a predetermined voltage range. The scanning drive device produces a first combination signal as a signal running to variation from a voltage below a refernece voltage in a predetermined one polarity voltage range to a voltage above the reference voltage and produces a second combination signal as a signal which does not exceed the reference voltage in the range, and supplies a direct-current combination signal between the electrodes after the supply of the first and second combination signal thereto.
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