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公开(公告)号：US5891359A
公开(公告)日：1999-04-06
申请号：US899361
申请日：1992-06-16
CPC分类号： C09K19/0266 , C07C69/76 , C09K19/322
摘要： The novel liquid crystal compounds of the present invention are represented by the following formulas �I!-�II! and have tristable molecular orientation states and can be used for display devices and electrooptical devices. ##STR1## wherein R.sub.1 represents an alkyl group of 5-18 carbon atoms; R.sub.2 represents an alkyl group of 6-16 carbon atoms; R.sub.3 represents an alkyl group of 8-18 carbon atoms; R.sub.4 represents an alkyl group of 6-14 carbon atoms; Y represents ##STR2## and * indicates an optically active center.
摘要翻译： 本发明的新型液晶化合物由下式[I] - [II]表示，具有三重分子取向状态，可用于显示装置和电光装置。 其中R 1表示5-18个碳原子的烷基; R 2表示6-16个碳原子的烷基; R3代表8-18个碳原子的烷基; R4代表6-14个碳原子的烷基; Y表示
，*表示光学活动中心。 -
2.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：US5116531A
公开(公告)日：1992-05-26
申请号：US573751
申请日：1990-08-28
IPC分类号： C07C69/773 , C07C69/90 , C07C69/94 , C09K19/02 , C09K19/20
CPC分类号： C09K19/0266 , C07C69/90 , C07C69/94 , C09K19/2021
摘要： A liquid crystal compound represented by formula (I): ##STR1## wherein R.sub.1 represents an alkyl group having from 5 to 18 carbon atoms; R.sub.2 represents an alkyl group having from 4 to 15 carbon atoms; X represents a single bond, --O--, ##STR2## and * indicates an optically active center. The compound exhibits three stable states of molecular orientation.
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公开(公告)号：US5207946A
公开(公告)日：1993-05-04
申请号：US557845
申请日：1990-07-25
IPC分类号： C07C69/017 , C07C69/773 , C07C69/90 , C09K19/02 , C09K19/20
CPC分类号： C09K19/0266 , C07C69/017 , C07C69/90 , 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; R.sub.2 represents an alkyl group having from 3 to 18 carbon atoms; X represents ##STR2## (A) and (B) each represents a group selected from the group consisting of ##STR3## and * indicates an optically active center.
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公开(公告)号：US5837163A
公开(公告)日：1998-11-17
申请号：US953783
申请日：1992-09-30
IPC分类号： C07C69/017 , C07C69/773 , C07C69/90 , C09K19/02 , C09K19/20 , C09K19/12 , C07C69/76
CPC分类号： C09K19/0266 , C07C69/017 , C07C69/90 , 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; R.sub.2 represents an alkyl group having from 3 to 18 carbon atoms; X represents ##STR2## Y represents ##STR3## (A) and (B) each represents a group selected from the group consisting of ##STR4## and ##STR5## and * indicates an optically active center.
摘要翻译： 由式（I）表示的液晶化合物：其中R 1表示具有3至18个碳原子的烷基; R2表示具有3至18个碳原子的烷基; X表示
Y表示（IMA）（A），（B）表示选自由 和 组成的组，*表示光学活动中心。 -
公开(公告)号：US5130050A
公开(公告)日：1992-07-14
申请号：US599849
申请日：1990-10-19
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.
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公开(公告)号：US5923509A
公开(公告)日：1999-07-13
申请号：US530430
申请日：1995-09-19
IPC分类号： G11B17/04 , G11B17/047 , G11B23/03
CPC分类号： G11B17/047 , G11B17/056 , G11B17/057 , G11B23/0307 , G11B23/0308 , G11B23/0311 , G11B23/0316
摘要： A disk cartridge (21) for loading on a flat tray (1) included in a disk loading apparatus. Recesses (29) are provided on the back side of the disk cartridge near the rear end (27a) thereof, and projections (16) are provided on the tray for judging whether the disk cartridge is loaded properly on the tray. In addition, notches (30) are formed on the right (27d) and left (27c) sides of the disk cartridge between the recesses and the rear end thereof for engagement with an automatic cartridge-changer.
摘要翻译： 一种用于装载在包括在盘装载装置中的平板托盘（1）上的盘盒（21）。 在盘盒的后端（27a）的后侧设置有凹部（29），并且在托盘上设置突起（16），以判断盘盒是否正确地装载在托盘上。 此外，凹槽（30）形成在盘盒的右（27d）和左（27c）侧之间的凹部和其后端之间，以与自动墨盒更换器接合。
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公开(公告)号：US5854777A
公开(公告)日：1998-12-29
申请号：US20415
申请日：1998-02-09
申请人： Ichiro Kawamura , Ryoichi Imanaka , Yoshikazu Goto
发明人： Ichiro Kawamura , Ryoichi Imanaka , Yoshikazu Goto
CPC分类号： G11B23/0302 , G11B23/0317
摘要： A cartridge for housing a recording medium therein. The cartridge includes a cartridge body configured such that a signal recording apparatus can record a signal onto the recording medium when the cartridge is loaded in the signal recording apparatus. The cartridge also includes an opening in the cartridge body for removing the recording medium from the cartridge body, and a cover covering the opening. An indicator on the cartridge body indicates whether the cover has ever been opened or removed from the cartridge body.
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公开(公告)号：US5825151A
公开(公告)日：1998-10-20
申请号：US529513
申请日：1995-09-18
CPC分类号： H02P8/14
摘要： According to the present invention, a stepping motor driving apparatus having a rotor and a stator in n (an integer equal to or larger than 2) phases for moving a moving body is provided. The stepping motor driving apparatus includes a driver for selectively supplying to the stator a first current pattern for rotating the rotor at a first pitch and a second current pattern for rotating the rotor at a second pitch different from the first pitch based on a drive switching signal. The driver switches the first current pattern and the second current pattern at a point where a torque generated by the first current pattern is equal to a torque generated by the second current pattern and supplies the first current pattern or the second current pattern to the stator.
摘要翻译： 根据本发明，提供一种具有用于移动移动体的n（整数等于或大于2）的转子和定子的步进电动机驱动装置。 步进电动机驱动装置包括：驱动器，用于选择性地向定子供给用于以第一节距旋转转子的第一电流模式和用于基于驱动切换信号以不同于第一音调的第二音调旋转转子的第二电流模式 。 驱动器在由第一电流模式产生的转矩等于由第二电流模式产生的转矩的点处切换第一电流模式和第二电流模式，并将第一电流模式或第二电流模式提供给定子。
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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。
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