公开(公告)号：US5085799A

公开(公告)日：1992-02-04

申请号：US392965

申请日：1989-08-04

申请人： Itsuo Shimizu ,  Kenji Furukawa ,  Masami Tanaka

发明人： Itsuo Shimizu ,  Kenji Furukawa ,  Masami Tanaka

IPC分类号： C09K19/46 ,  C09K19/12 ,  G02F1/13 ,  G02F1/133 ,  G02F1/137

CPC分类号： G02F1/132 ,  C09K19/12

摘要： The present invention relates to a liquid crystal composition for use in thermal writing type liquid crystal displays in which a thermooptical effect is utilized. A technical subject of the present invention is to provide a liquid crystal composition characteristically having an extremely narrow nematic range and a low-melting phase transition point, and another object of the present case is to provide a liquid crystal display element using this composition.The present invention is directed to a liquid crystal composition which comprises a component A comprising at least one of 4-n-alkyl-4'-cyanobiphenyls represented by the formula (1) ##STR1## wherein R.sup.1 is an alkyl group having 8, 9, 10, 11 or 12 carbon atoms, and a component B comprising at least one of 4-n-alkoxycarbonyloxy-4'-cyanobiphenyls represented by the formula (2) ##STR2## wherein R.sup.2 is an alkyl group having 8, 9, 10, 11 or 12 carbon atoms, a ratio of the component A to the component B being from 25:75 to 95:5.Since the liquid crystal composition of the present invention has a nematic range of 2.degree. C. or less, the writing velocity of the display element is accelerated, and the contrast on a projection screen is bettered, whereby display quality is improved remarkably. Additionally, since having a melting point of 0.degree. C. or less, the liquid crystal composition of the present inventin can be used in thermal writing type liquid crystal displays without any problems which can be utilized indoors and at room temperature.

公开(公告)号：US5094776A

公开(公告)日：1992-03-10

申请号：US381411

申请日：1989-07-11

申请人： Itsuo Shimizu ,  Kenji Furukawa ,  Masami Tanaka

发明人： Itsuo Shimizu ,  Kenji Furukawa ,  Masami Tanaka

IPC分类号： C09K19/46 ,  C09K19/12 ,  G02F1/133 ,  G02F1/137

CPC分类号： G02F1/132 ,  C09K19/12

摘要： The present invention relates to a liquid crystal composition used for thermal writing type liquid crystal display devices utilizing a thermooptical effect, and a liquid crystal display element using the composition.The object of the present invention is to provide a liquid crystal composition having an extremely narrow nematic range and a low-melting phase transition point, and also to provide a liquid crystal display element using the composition.The present invention is directed to a liquid crystal composition mainly comprising a component A comprising 4-n-octyl-4'-cyanobiphenyl, 4-n-dodecyl-4'-cyanobiphenyl and at least one member of 4-n-alkyl-4'-cyanobiphenyls represented by the formula (I), ##STR1## wherein R.sup.1 is an alkyl group of 9, 10 or 11 carbon atoms, and a component B comprising at least one member of 4-n-alkanolyloxy-4'-cyanobiphenyls represented by the formula (II) ##STR2## wherein R.sup.2 is an alkyl group of 8 or 9 carbon atoms, and at least one member of 4-n-alkanoyloxy-4'-cyanobiphenyls represented by the formula (III) ##STR3## wherein R.sup.3 is an alkyl group of 10, 11 or 12 carbon atoms, the ratio of the component A to the component B being in the range of 95:5 to 45:55.The liquid crystals composition may further comprise at least one member of 4-n-alkoxy-4'-cyanobiphenyls represented by the formula (IV) ##STR4## wherein R.sup.4 is an alkyl group of 8 to 12 carbon atoms.

公开(公告)号：US06949281B1

公开(公告)日：2005-09-27

申请号：US10018540

申请日：2000-06-26

申请人： Satoshi Tanioka ,  Kumiko Fukui ,  Shizuo Murata ,  Hiroshi Ono ,  Itsuo Shimizu

发明人： Satoshi Tanioka ,  Kumiko Fukui ,  Shizuo Murata ,  Hiroshi Ono ,  Itsuo Shimizu

IPC分类号： C08L79/08 ,  C09K19/30 ,  G02F1/1337 ,  C09K19/00

CPC分类号： C09K19/3001 ,  C08L79/08 ,  G02F1/133723 ,  Y10T428/24223

摘要： An object of the present invention is to provide a varnish composition which can achieve totally and with good balance the improvement in various properties including electrical properties such as residual charge, a voltage holding ratio and image sticking, a pre-tilt angle, coating property, alignment property, and so on, which are desired for a liquid crystal aligning film formed. The varnish composition comprises polymer ingredients containing polyamic acid B represented by formula (1), polyamic acid A represented by formula (2) having a side chain of not less than 3 carbon atoms and N-substituted polyamide represented by formula (3), and a solvent for dissolving the polymer ingredients. The varnish composition contains 0.1 to 40% by weight of the polymer ingredients

摘要翻译： 本发明的目的是提供一种清漆组合物，其可以完全平衡地获得各种性能的改进，包括电性能如残留电荷，电压保持率和图像粘附，预倾角，涂布性能， 取向性等，这对于形成的液晶取向膜是期望的。 清漆组合物包含含有式（1）表示的聚酰胺酸B，侧链不少于3个碳原子的式（2）表示的聚酰胺酸A和由式（3）表示的N-取代聚酰胺的聚合物成分，以及 用于溶解聚合物成分的溶剂。 清漆组合物含有0.1-40重量％的聚合物成分

公开(公告)号：US5907005A

公开(公告)日：1999-05-25

申请号：US841824

申请日：1997-04-28

申请人： Itsuo Shimizu

发明人： Itsuo Shimizu

IPC分类号： C08K5/06 ,  C08K5/34 ,  C08L79/08 ,  C09D179/08 ,  G02F1/1337 ,  C08K5/10 ,  C08K5/20

CPC分类号： C08K5/06 ,  C08K5/34 ,  G02F1/133723

摘要： A varnish composition suitable for producing a liquid crystal aligning film having a thickness of several tens to one hundred nanometers having 1 to 10% by weight of polyamic acid or soluble polyimide, and 90 to 99% by weight of a solvent which comprises 5 to 80% by weight of at least one compound selected from a group of solvent components A and 20 to 95% by weight of at least one compound selected from a group consisting of component B and component C where the group of solvent components A consists of N-methyl-2-pyrrolidone and dimethylimidazolidinone and the component B is alkyl lactate, and the component C isR.sub.1-O(C.sub.3H.sub.6 O).sub.nH (I)where n is 1 or 2, R.sub.1 is an alkyl group having 4 carbon atoms when n is 1, and R.sub.1 is an alkyl group having 1 to 4 carbon atoms when n is 2, is disclosed.

摘要翻译： 一种适用于制造厚度为几十至一百纳米的液晶取向膜的清漆组合物，其具有1-10重量％的聚酰胺酸或可溶性聚酰亚胺，和90-99重量％的包含5-80重量份的溶剂 至少一种选自一组溶剂组分A的化合物和20至95重量％的至少一种选自组分B和组分C的化合物的化合物，其中溶剂组分A由N- 甲基-2-吡咯烷酮和二甲基咪唑啉酮，组分B为乳酸烷基酯，组分C为n为1或2的R1-O（C3H6O）nH（Ⅰ），当n为1时，R1为碳原子数为4的烷基， 当n为2时，R 1为碳原子数1〜4的烷基。

公开(公告)号：US06685997B1

公开(公告)日：2004-02-03

申请号：US09701842

申请日：2000-12-05

申请人： Shizuo Murata ,  Haruo Kato ,  Satoshi Tanioka ,  Kumiko Fukui ,  Hiroshi Ono ,  Itsuo Shimizu

发明人： Shizuo Murata ,  Haruo Kato ,  Satoshi Tanioka ,  Kumiko Fukui ,  Hiroshi Ono ,  Itsuo Shimizu

IPC分类号： C09K1900

CPC分类号： C08L79/08 ,  C08L77/00 ,  C09D177/00 ,  C09D179/08 ,  G02F1/133723 ,  Y10T428/1005 ,  C08L2666/20

摘要： Provided is a varnish composition which can achieve well-balanced electrical characteristics such as a residual charge, a voltage-holding ratio and image sticking and various characteristics such as a pretilt angle, a coating property and an aligning property, which are desired to a liquid crystal alignment film which is prepared therefrom. The above varnish composition comprises a polymer component comprising a polyamide acid represented by Formula (1), a polyamide represented by Formula (2) or the polyamide represented by Formula (2) and a soluble polyimide represented by Formula (3), and a solvent, wherein the above polymer component contains 1 to 60% by weight of the polyamide represented by Formula (2), and the above varnish composition contains 0.1 to 40% by weight of the polymer component:

摘要翻译： 提供一种清漆组合物，其可以实现良好平衡的电特性，例如残留电荷，电压保持率和图像粘附以及液体所需的各种特性如预倾角，涂布性能和取向性质 由其制备的晶体取向膜。 上述清漆组合物包含聚合物组分，其包含由式（1）表示的聚酰胺酸，由式（2）表示的聚酰胺或由式（2）表示的聚酰胺和由式（3）表示的可溶性聚酰胺，以及溶剂 ，其中上述聚合物组分含有1至60重量％的由式（2）表示的聚酰胺，并且上述清漆组合物包含0.1至40重量％的聚合物组分：

公开(公告)号：US06746730B1

公开(公告)日：2004-06-08

申请号：US10019260

申请日：2001-12-28

申请人： Satoshi Tanioka ,  Kumiko Fukui ,  Shizuo Murata ,  Hiroshi Ono ,  Itsuo Shimizu

发明人： Satoshi Tanioka ,  Kumiko Fukui ,  Shizuo Murata ,  Hiroshi Ono ,  Itsuo Shimizu

IPC分类号： C09K1900

CPC分类号： G02F1/133723 ,  C08L79/08 ,  C08L2205/02 ,  C09D179/08 ,  C09K19/3001 ,  C09K19/56 ,  Y10T428/10 ,  Y10T428/31721 ,  C08L2666/20

摘要： A varnish composition which comprises a solvent and a polymer component comprising a polyamic acid (B) (having residues which are derived from tetracarboxylic acids and a diamine respectively and which are residues having no side chains or residues having a pendant C1-2 alkyl group or are residues having a composition comprising a mixture of these), a polyamic acid (A) (having residues which are derived from tetracarboxylic acids and a diamine respectively and at least either of which is a residue having a pendant C3+ alkyl group or is a residue having a composition containing that residue), and a soluble polyimide, and in which the proportion of the polyamic acid (A) to the soluble polyimide is 1/99 to 99/1 by weight, the, sum of the polyamic acid (A) and the soluble polyimide accounts for 1 to 80 wt. % of the polymer component, the polyamic acid (B) accounts for 99 to 20 wt. % of the polymer component, and the proportion of the polymer component in the whole varnish composition is 0.1 to 40 wt. %. Also provided is a liquid-crystal display element having an alignment film formed from this varnish composition.

摘要翻译： 一种清漆组合物，其包含溶剂和聚合物组分，所述聚合物组分包含聚酰胺酸（B）（具有衍生自四羧酸的残基和分别为残基且不具有侧链的残基或具有C1-2烷基侧基的残基或 是具有包含这些的混合物的组合物的残基），聚酰胺酸（A）（具有衍生自四羧酸的残基和分别具有二胺的残基，并且其中至少任一个是具有C3 +烷基侧基的残基或残基 具有含有该残基的组合物）和可溶性聚酰亚胺，其中聚酰胺酸（A）与可溶性聚酰亚胺的比例为1/99〜99/1，聚酰胺酸（A） 可溶性聚酰亚胺占1〜80wt。 ％的聚合物组分，聚酰胺酸（B）占99至20wt。 ％的聚合物组分，并且聚合物组分在整个清漆组合物中的比例为0.1至40重量％。 ％。 还提供了具有由该清漆组合物形成的取向膜的液晶显示元件。

公开(公告)号：US5256944A

公开(公告)日：1993-10-26

申请号：US757049

申请日：1991-09-09

申请人： Masahiro Tobise ,  Itsuo Shimizu ,  Yuji Yamasawa ,  Toshihiko Chino

发明人： Masahiro Tobise ,  Itsuo Shimizu ,  Yuji Yamasawa ,  Toshihiko Chino

IPC分类号： H02P7/06 ,  B21B37/46 ,  H02P7/285 ,  H02P21/00 ,  H02P27/04 ,  H02F7/00

CPC分类号： B21B37/46 ,  H02P7/2855

摘要： A speed control method and apparatus for a motor driven by output of a power conversion unit, wherein a first current command value is inputted to derive a drooping variable, a deviation between a detected speed value of the motor and a speed command value is derived, the first current command value is derived on the basis of a value obtained by compensating the deviation with the drooping variable, the speed command value is inputted to derive an acceleration or deceleration current value for accelerating or decelerating the motor, and the first current command value and the acceleration or deceleration current value are added together to derive a second current command value and control the output current of the power conversion unit on the basis of the second current command value.

摘要翻译： 一种用于通过功率转换单元的输出驱动的电动机的速度控制方法和装置，其中输入第一电流指令值以导出下垂变量，导出电动机的检测速度值与速度指令值之间的偏差， 基于通过用下降变量补偿偏差获得的值导出第一电流指令值，输入速度指令值以导出用于加速或减速电动机的加速或减速电流值，并且第一电流指令值 加速或减速电流值被相加在一起以导出第二电流指令值，并且基于第二电流指令值来控制电力转换单元的输出电流。

公开(公告)号：US06946169B1

公开(公告)日：2005-09-20

申请号：US09581624

申请日：1998-12-08

申请人： Satoshi Tanioka ,  Shizuo Murata ,  Itsuo Shimizu ,  Kazumi Ito

发明人： Satoshi Tanioka ,  Shizuo Murata ,  Itsuo Shimizu ,  Kazumi Ito

IPC分类号： C08G73/10 ,  C08L79/08 ,  G02F1/1337 ,  C09K19/00

CPC分类号： G02F1/133723 ,  C08G73/10 ,  C08L79/08 ,  Y10T428/10 ,  Y10T428/1005 ,  Y10T428/1018

摘要： The present invention provides a liquid crystal display element having an adequate pre-tilt angle for preventing the reverse domain, as well as excellent electrical properties by preparation of the polyamic acid composition for the liquid crystal display element comprises a polyamic acid A that excels in electrical properties and a polyamic acid B that has side chains, mixed in the ratio A/B of 50/50 to 95/5 (by weight).

摘要翻译： 本发明提供了一种液晶显示元件，其具有用于防止反向结构域的足够的预倾角以及通过制备用于液晶显示元件的聚酰胺酸组合物的优异的电学性质，所述聚酰胺酸组合物包括在电气 性质和具有侧链的聚酰胺酸B，其比例A / B为50/50至95/5（重量比）。

公开(公告)号：US06620339B1

公开(公告)日：2003-09-16

申请号：US09581852

申请日：2000-06-19

申请人： Itsuo Shimizu ,  Kumiko Hara ,  Haruo Kato ,  Satoshi Tanioka ,  Shizuo Murata

发明人： Itsuo Shimizu ,  Kumiko Hara ,  Haruo Kato ,  Satoshi Tanioka ,  Shizuo Murata

IPC分类号： C09K1912

CPC分类号： G02F1/133723 ,  C08G73/10 ,  C08G73/1042

摘要： The present invention provides a polyimide alignment film having excellent electrical properties and excellent reliability for use in the field of electronic materials which comprises a polyimide resin produced from a polyamic acid composition comprising a polyamic acid forming a polyimide resin of a low residual voltage and a high voltage holding ratio, and a polyamic acid forming a polyimide resin of a large pre-tilt angle, blended them in the ratio of the former to the latter of 50/50 to 95/5 (weight ratio), a polyamic acid composition for providing such a polyimide aligning film and a liquid crystal display element produced from such an aligning film.

摘要翻译： 本发明提供了一种聚酰亚胺取向膜，其具有优异的电学性能和可靠性，在电子材料领域中使用的聚酰亚胺树脂包括由聚酰胺酸组合物制成的聚酰亚胺树脂，该聚酰亚胺树脂包含形成低残留电压和高的聚酰亚胺树脂的聚酰胺酸 电压保持率和形成大倾斜角度的聚酰亚胺树脂的聚酰胺酸，以前者与后者的比例以50/50至95/5（重量比）混合，提供用于提供 这种聚酰亚胺取向膜和由这种取向膜制成的液晶显示元件。

公开(公告)号：US06316574B1

公开(公告)日：2001-11-13

申请号：US09581838

申请日：2000-06-19

申请人： Satoshi Tanioka ,  Shizuo Murata ,  Itsuo Shimizu ,  Kazumi Ito

发明人： Satoshi Tanioka ,  Shizuo Murata ,  Itsuo Shimizu ,  Kazumi Ito

IPC分类号： C08G7310

CPC分类号： G02F1/133723 ,  C08G73/10 ,  C08G73/1039 ,  C08G73/1064 ,  C08G73/1071 ,  C08L79/08 ,  Y10T428/10 ,  Y10T428/1005 ,  Y10T428/1014 ,  Y10T428/1023 ,  Y10T428/31721

摘要： The present invention provides a liquid crystal display element having an adequate pre-tilt angle for preventing the reverse domain, as well as excellent electrical properties by preparation of the polyamic acid composition for the liquid crystal display element which comprises a polyamic acid A that excels in electrical properties and a polyamic acid B that has side chains, mixed in the ratio A/B of 50/50 to 95/5 (by weight).

摘要翻译： 本发明提供了一种具有足够的预倾角的液晶显示元件，用于防止反向畴，以及通过制备用于液晶显示元件的聚酰胺酸组合物具有优异的电性能，该聚酰胺酸组合物包含优异的聚酰胺酸A 电性能和具有侧链的聚酰胺酸B，其比例A / B为50/50至95/5（重量比）。