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1.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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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。 -
3.发明授权Component for liquid crystal composition and liquid crystal composition containing the same 失效用于液晶组合物的组分和含有它的液晶组合物
公开(公告)号：US5110497A
公开(公告)日：1992-05-05
申请号：US646115
申请日：1991-01-28
IPC分类号： C07C69/773 , C09K19/20 , C09K19/30 , C09K19/32 , C09K19/34 , C09K19/46 , C09K19/54 , C09K19/58
CPC分类号： C09K19/3441 , C09K19/2021 , C09K19/3001 , C09K19/586
摘要： An optically active compound represent by formula (I): ##STR1## wherein R.sub.1 represents a fluoroalkyl group having from 1 to 18 carbon atoms; R.sub.2 represents an alkyl group having from 1 to 16 carbon atoms and an aralkyl group having from 6 to 16 carbon atoms; R.sub.3 represents C.sub.2 F.sub.5, CF.sub.3, CHF.sub.2, or CH.sub.2 F; X represents a single bond, --O--, --COO--, or --OCO--; Y represents --COO--, --OCO--, --CH.sub.2 O--, or --OCH.sub.2 --; Z represents --COO-- or --O--; (A) and (B) each represent a cyclic group; and * indicates an optically active center, and a liquid crystal composition containing at least one of said optically active compounds are disclosed. The compound is useful not only as a liquid crystal compound but as a chiral dopant to provide a liquid crystal composition exhibiting a chiral smectic phase.
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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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公开(公告)号：US5433887A
公开(公告)日：1995-07-18
申请号：US889373
申请日：1992-05-28
IPC分类号： C07C69/773 , C07C69/90 , C09K19/02 , C09K19/20 , C07C69/76
CPC分类号： C09K19/0266 , C07C69/90 , C09K19/2021
摘要： The invention discloses optically active liquid crystal compounds represented by the formulas [I], [II] and [III]: ##STR1## wherein R.sub.1 and R.sub.2 each represents an alkyl group of 4-18 carbon atoms, X represents O, COO or a single bond, and (A), (B), (C), (D) and (E) each represents ##STR2## in which l represents a halogen. The invention further discloses optically active liquid crystal compounds which are able to exhibit tristable states, represented by the formulas [IV], [V] and [VI]: ##STR3## wherein R.sub.1 ' and R.sub.2 ' each represents a straight chain alkyl group of 5-16 carbon atoms, X' represents O or COO and (A), (B), (C), (D) and (E), and l each has the same meaning as above.
摘要翻译： 本发明公开了由式[I]，[II]和[III]表示的光学活性液晶化合物：其中R1和R2各自表示4-18个碳原子的烷基 原子，X表示O，COO或单键，（A），（B），（C），（D）和（E）各自表示
其中l表示卤素。 本发明还公开了能够表现出由式[Ⅳ]，[Ⅴ]和[Ⅵ]表示的三态的光学活性液晶化合物：[IMAGE] [IV] 其中R 1'和R 2'各自表示5-16个碳原子的直链烷基，X'代表O或COO，（A），（B），（C），（D）和 （E）和l各自具有与上述相同的含义。
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