公开(公告)号：US5130050A

公开(公告)日：1992-07-14

申请号：US599849

申请日：1990-10-19

申请人： Takashi Hagiwara ,  Noriko Yamakawa ,  Ichiro Kawamura

发明人： Takashi Hagiwara ,  Noriko Yamakawa ,  Ichiro Kawamura

IPC分类号： G02F1/1337 ,  C07C69/773 ,  C07C69/94 ,  C09K19/20 ,  G02F1/137 ,  G02F1/141

CPC分类号： C09K19/2021 ,  C07C69/94

摘要： A new tetrastable liquid crystal is provided which is useful for display and switching devices. The liquid crystal has the formula ##STR1## where R.sub.1 is a C.sub.5-18 alkyl group and R.sub.2 is a C.sub.4-15 alkyl group and * is an optically active center.

公开(公告)号：US5091557A

公开(公告)日：1992-02-25

申请号：US701906

申请日：1991-05-17

申请人： Kimie Nagai ,  Schuichi Naijoh ,  Ayako Kurotaki ,  Koro Shirane ,  Chozo Inoue

发明人： Kimie Nagai ,  Schuichi Naijoh ,  Ayako Kurotaki ,  Koro Shirane ,  Chozo Inoue

IPC分类号： C07C235/34 ,  C07C255/41 ,  C09K19/20 ,  C09K19/22

CPC分类号： C07C235/34 ,  C07C255/41 ,  C09K19/2021 ,  C09K19/2028 ,  C09K19/22

摘要： A novel amino acid derivative is disclosed, which is produced using a relatively inexpensive amino acid as a starting material for an optically active moiety and shows a chiral nematic phase or a chiral smectic phase over a wide temperature range around room temperature. A process for producing the amino acid derivative is also disclosed.

摘要翻译： 公开了一种新的氨基酸衍生物，其使用相对便宜的氨基酸作为光学活性部分的起始材料制备，并且在室温附近的宽温度范围内显示手性向列相或手性近晶相。 还公开了生产氨基酸衍生物的方法。

公开(公告)号：US5073306A

公开(公告)日：1991-12-17

申请号：US385700

申请日：1989-07-25

申请人： Hiroyuki Nohira ,  Masanao Kamei ,  Hideki Kanazawa ,  Yoko Yamada ,  Yuko Etoh

发明人： Hiroyuki Nohira ,  Masanao Kamei ,  Hideki Kanazawa ,  Yoko Yamada ,  Yuko Etoh

IPC分类号： C07C69/773 ,  C07D239/26 ,  C09K19/12 ,  C09K19/20 ,  C09K19/30 ,  C09K19/34 ,  C09K19/46

CPC分类号： C07D239/26 ,  C09K19/126 ,  C09K19/2021 ,  C09K19/3001 ,  C09K19/3463 ,  C09K19/46

摘要： An optically active, generally mesomorphic compound represented by the following formula (I): ##STR1## wherein R.sub.1 denotes an alkyl group having 1-18 carbon atoms, R.sub.2 denotes an alkyl group having 1-12 carbon atoms; X denotes a single bond, --O--, ##STR2## Y denotes a single bond, ##STR3## --CH.sub.2 O-- or --OCH.sub.2 --; Z denotes --OCH.sub.2 --, ##STR4## C* denotes an asymmetric carbon atom; k, m and n are respectively 0, 1 or 2 with proviso that k+m+n amounts to 2 or 3; and p is 1 or 2.

公开(公告)号：US5051527A

公开(公告)日：1991-09-24

申请号：US316831

申请日：1989-02-28

申请人： Yoshiichi Suzuki ,  Takashi Hagiwara ,  Hiroyuki Mogamiya

发明人： Yoshiichi Suzuki ,  Takashi Hagiwara ,  Hiroyuki Mogamiya

IPC分类号： C09K19/04 ,  C09K19/20

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.

公开(公告)号：US5020883A

公开(公告)日：1991-06-04

申请号：US263982

申请日：1988-10-27

申请人： Susumu Era ,  Kishiro Iwasaki ,  Hisao Yokokura ,  Yasuo Hanawa ,  Katsumi Kondo ,  Tadao Nakada ,  Teruo Kitamura ,  Akio Mukoh

发明人： Susumu Era ,  Kishiro Iwasaki ,  Hisao Yokokura ,  Yasuo Hanawa ,  Katsumi Kondo ,  Tadao Nakada ,  Teruo Kitamura ,  Akio Mukoh

IPC分类号： C08G73/00 ,  C08G73/10 ,  G02F1/133 ,  G02F1/1337

CPC分类号： G02F1/133711 ,  C09K19/0225 ,  C09K19/2021

摘要： A ferroelectric liquid crystal device which comprises at least one pair of counterposed substrates, a ferroelectric liquid crystal material provided between the substrates, means for applying an electric field to the liquid crystal material and provided at the substrates, an alignment-controlling layer provided on the surface on the liquid crystal material side of each of the substrates, and a sealing member at the peripheral edges of the substrates, the alignment-controlling layer being a film of an organic polymer whose .beta. dispersion temperature is higher than the curing temperature of a sealant for the sealing member, preferably at least 200.degree. C., has a good alignment state of ferroelectric liquid crystal molecules achieved by cooling alone without any application of an electric field and has good display qualities such as a high contrast.

摘要翻译： 一种强电介质液晶装置，包括至少一对相对的基板，设置在基板之间的铁电液晶材料，用于向液晶材料施加电场并设置在基板上的装置，设置在基板上的对准控制层 每个基板的液晶材料侧的表面以及基板的周缘处的密封构件，该取向控制层是其分散温度高于密封剂的固化温度的有机聚合物的膜 对于密封构件，优选至少200℃，具有通过单独冷却实现的铁电液晶分子的良好取向状态，而不施加电场，并且具有良好的显示质量，例如高对比度。

公开(公告)号：US4973738A

公开(公告)日：1990-11-27

申请号：US344646

申请日：1989-04-28

申请人： Yoshiichi Suzuki ,  Ichiro Kuwamura ,  Takashi Hagiwara

发明人： Yoshiichi Suzuki ,  Ichiro Kuwamura ,  Takashi Hagiwara

IPC分类号： C07C43/225 ,  C07C41/00 ,  C07C67/00 ,  C07C69/76 ,  C07C69/773 ,  C07C69/82 ,  C07C69/92 ,  C07C69/94 ,  C09K19/02 ,  C09K19/20 ,  C09K19/32

CPC分类号： C09K19/0266 ,  C09K19/2021 ,  C09K19/322

摘要： Novel ferroelectric liquid crystal compounds which may realize a stable molecular orientation which makes it possible to give a definite light-dark contrast in the no electric field state and attain a definite threshold property as well as hysteresis, and for making it possible to attain the dynamic driving as well as the high speed of response, owing to tri-stable phase thereof, of the general formulae (I) and (II) ##STR1## in which R.sub.1 means an alkyl, alkoxy or alkyloxycarbonyl each of 1-20 carbon atoms, R.sub.2 means optically active ##STR2## wherein n is an integer of 4-10, X means ##STR3## Y means ##STR4##

公开(公告)号：US4925591A

公开(公告)日：1990-05-15

申请号：US288379

申请日：1988-12-22

申请人： Jun Nakauchi ,  Mioko Uematsu ,  Keiichi Sakashita ,  Yoshitaka Kageyama ,  Seiji Hayashi ,  Kenji Mori

发明人： Jun Nakauchi ,  Mioko Uematsu ,  Keiichi Sakashita ,  Yoshitaka Kageyama ,  Seiji Hayashi ,  Kenji Mori

IPC分类号： C07C69/773 ,  C09K19/12 ,  C09K19/20

CPC分类号： C09K19/126 ,  C09K19/20 ,  C09K19/2021

摘要： Disclosed is a mesomorphic compound having a .beta.-hydroxycarboxyl group as the chiral source, which is represented by the formula: ##STR1## wherein m and n are integers of from 1 to 18, X.sub.1 and X.sub.2 independently represent fluorine, chlorine or hydrogen, Y represents ##STR2## or --O--, Z represents a direct bond, ##STR3## --CH hd 2O-- or --OCH.sub.2 --, and * indicates the asymmetric carbon. The mesomorphic compound is valuable as a ferroelectric liquid crystal or an additive to a ferroelectric liquid crystal or to a compound showing the SmC phase and having no chiral group.

公开(公告)号：US4923633A

公开(公告)日：1990-05-08

申请号：US116282

申请日：1987-11-30

申请人： George W. Gray ,  David Lacey ,  Kenneth J. Toyne ,  David Coates ,  Adam Jackson ,  Richard M. Scrowston

发明人： George W. Gray ,  David Lacey ,  Kenneth J. Toyne ,  David Coates ,  Adam Jackson ,  Richard M. Scrowston

IPC分类号： C09K19/12 ,  C09K19/20 ,  C09K19/32

CPC分类号： C09K19/2028 ,  C09K19/126 ,  C09K19/2021 ,  C09K19/32

摘要： A compound suitable for use in a ferroelectric smectic liquid crystal composition having a structure which contains two chiral centers derived from alpha hydroxy carboxylic acid groups and having the formula: ##STR1## wherein R.sub.1 is n-alkoxy containing 1-12 carbo atoms and R.sub.2 is n-alkyl containing 1-12 carbon atoms. Methods of preparation and details of liquid crystal mixtures containing these compounds are described.

摘要翻译： 一种适用于铁电体系液晶组合物的化合物，其结构含有由α羟基羧酸基团衍生的具有下式的两个手性中心：其中R1为含有1-12个碳原子的正烷氧基，R2为 含有1-12个碳原子的正烷基。 描述了制备方法和含有这些化合物的液晶混合物的细节。

公开(公告)号：US4917473A

公开(公告)日：1990-04-17

申请号：US254096

申请日：1988-10-06

申请人： Toshio Watanabe

发明人： Toshio Watanabe

IPC分类号： C09K19/20 ,  G02F1/1341 ,  G02F1/141

CPC分类号： C09K19/2021 ,  G02F1/1341 ,  G02F1/141 ,  Y10S359/90

摘要： An improved method for manufacturing liquid crystal devices is described. The method comprises mating a pair of substrates with an inner space therebetween, sealing the periphery of the mated substrates save for inlet ports, placing the mated substrates in a vacuum chamber, evacuating air from the inner space between the substrates by virtue of the differential pressure between the inner space and the vacuum chamber, pouring a liquid crystal material into the inlet ports, introducing the liquid crystal material into the inner space by elevating the pressure of the vacuum chamber at an elevated temperature, cooling the liquid crystal material, and closing the inlet ports by means of a sealing member. The removal of the superfluous portion of the liquid crystal material is done only after closing of the inlet ports.

公开(公告)号：US4911862A

公开(公告)日：1990-03-27

申请号：US210375

申请日：1988-06-23

申请人： Tadao Shoji ,  Sadao Takehara ,  Toru Fujisawa ,  Masashi Osawa ,  Hiroshi Ogawa ,  Yoshi Arai ,  Jitsuo Kurokawa

发明人： Tadao Shoji ,  Sadao Takehara ,  Toru Fujisawa ,  Masashi Osawa ,  Hiroshi Ogawa ,  Yoshi Arai ,  Jitsuo Kurokawa

IPC分类号： C07C69/773 ,  C09K19/12 ,  C09K19/20

CPC分类号： C09K19/12 ,  C09K19/2021

摘要： An optically active carboxylic acid derivative represented by the general formula ##STR1## wherein R represents a normal alkyl group having 1 to 20 carbon atoms, m and n represent 0 or 1 but are not 1 at the same time, X represents a hydrogen or halogen atom, Y represents a hydrogen or fluorine atom, provided that when Y is a hydrogen atom, X is a halogen atom, and that when n is 0, Y is a hydrogen atom, and Q* represents an optically active alkyl or 1-alkoxyethyl group having an asymmetric carbon atom.

摘要翻译： 由通式（I）表示的光学活性羧酸衍生物，其中R表示具有1至20个碳原子的正烷基，m和n表示0或1，但不同时为1，X表示 氢或卤素原子，Y表示氢或氟原子，条件是当Y为氢原子时，X为卤素原子，当n为0时，Y为氢原子，Q *为光学活性烷基或 具有不对称碳原子的1-烷氧基乙基。