公开(公告)号：US20040076769A1

公开(公告)日：2004-04-22

申请号：US10678256

申请日：2003-10-06

申请人： DAINIPPON INK AND CHEMICALS, INC.

发明人： Hidetoshi Nakata ,  Kiyofumi Takeuchi

IPC分类号： C09K019/54 ,  C09K019/20

CPC分类号： C09K19/586 ,  C09K19/2028 ,  Y10T428/10

摘要： A chiral nematic liquid crystal composition has minimal temperature dependency of the natural pitch and temperature dependency of the wavelength selective reflection and low temperature storage stability thereof is excellent. A chiral nematic liquid crystal composition with a broad liquid crystal temperature range is used in a bistable liquid crystal display element, and a bistable liquid crystal display element comprising the liquid crystal composition. The chiral nematic liquid crystal composition comprises optically active compounds represented by general formula (I-a) and general formula (II-a): 1 R2nullP1-L1nullSP2-L2-P3nullR3nullnull(II-a) wherein the general formula (II-a) has the same helical twisting direction as the general formula (I-a), and shows a positive temperature dependency for the natural pitch, and a HTP value of at least 3. A bistable liquid crystal display element comprises the liquid crystal composition.

摘要翻译： 手性向列液晶组合物的自然间距的温度依赖性最小，波长选择反射的温度依赖性和低温保存稳定性优异。 具有宽液晶温度范围的手性向列液晶组合物用于双稳态液晶显示元件和包含液晶组合物的双稳态液晶显示元件。 手性向列液晶组合物包含由通式（Ia）和通式（II-a）表示的光学活性化合物：R 2和Parenclosest; P 1 -L 1和Parenclosest; SP 2 -L- （II-a）其中通式（II-a）具有与通式（Ia）相同的螺旋扭转方向，并示出了对于天然沥青的正温度依赖性 ，HTP值至少为3.双稳态液晶显示元件包括液晶组合物。

公开(公告)号：US20040021128A1

公开(公告)日：2004-02-05

申请号：US10601803

申请日：2003-06-24

申请人： Dainippon Ink and Chemicals, Inc.

发明人： Hidetoshi Nakata ,  Makoto Sasaki ,  Kiyofumi Takeuchi ,  Haruyoshi Takatsu

IPC分类号： C09K019/52 ,  C09K019/34 ,  C09K019/30 ,  C09K019/20 ,  C09K019/12 ,  C09K019/36

CPC分类号： C09K19/586 ,  Y10T428/10

摘要： A method of increasing helical twisting power (HTP) in an optically active compound used in a liquid crystal material is provided. An optically active compound which exhibits a large HTP value is also provided. Furthermore, a liquid crystal composition which exhibits a high upper temperature limit of the liquid crystal after the addition of the optically active compound, and a liquid crystal display device using the same are provided. In a method, an HTP of a compound having a partial structure represented by formula (A), which has an asymmetric carbon atom, is increased by replacing the partial structure represented by formula (A) by a partial structure represented by formula (B). 1 (wherein * represents the position of an asymmetric carbon atom, Y1 represents a substituent such as an alkyl group and a halogen). A compound is represented by formula (I): 2

摘要翻译： 提供了一种在液晶材料中使用的光学活性化合物中提高螺旋扭转力（HTP）的方法。 还提供了表现出大HTP值的光学活性化合物。 此外，提供了在添加光学活性化合物之后显示出液晶的上限温度的液晶组合物和使用其的液晶显示装置。 在一种方法中，通过用式（B）表示的部分结构代替由式（A）表示的部分结构，具有不对称碳原子的由式（A）表示的部分结构的化合物的HTP增加， 。 （其中*表示不对称碳原子的位置，Y 1表示取代基，例如烷基和卤素）。 化合物由式（I）表示：

公开(公告)号：US20020060310A1

公开(公告)日：2002-05-23

申请号：US09986316

申请日：2001-11-08

申请人： Dainippon Ink and Chemicals, Inc.

发明人： Hiroshi Hasebe ,  Sadao Takehara ,  Kiyofumi Takeuchi

IPC分类号： C09K019/12 ,  C09K019/20 ,  C09K019/38

CPC分类号： C09K19/38 ,  C09K19/2014 ,  C09K2019/0448

摘要： A polymerizable compound represented by formula (I): 1 wherein Q1 and Q2 each independently represent a hydrogen atom or a methyl group; p and q each independently represent an integer of 2 to 18; X1 and X2 each independently represent a single bond, nullOnull, nullCOOnull or nullOCOnull; L1 represents nullCOOnull or nullOCOnull; L2 represents nullCH2CH2COOnull or nullCH2CH2OCOnull; and Y1, Y2 and Y3 each independently represent a hydrogen atom, an alkyl group having 1 to 7 carbon atoms, an alkoxy group having 1 to 7 carbon atoms, an alkanoyl group having 2 to 7 carbon atoms, a cyano group or a halogen atom. Also disclosed are a polymerizable liquid crystal composition containing the compound, and an optically anisotropic medium produced from the composition.

摘要翻译： 由式（I）表示的可聚合化合物：其中Q1和Q2各自独立地表示氢原子或甲基; p和q各自独立地表示2〜18的整数， X 1和X 2各自独立地表示单键，-O - ， - COO-或-OCO-; L 1表示-COO-或-OCO-; L2表示-CH2CH2COO-或-CH2CH2OCO-; Y 1，Y 2和Y 3各自独立地表示氢原子，碳原子数1〜7的烷基，碳原子数1〜7的烷氧基，碳原子数2〜7的烷酰基，氰基或卤素原子 。 还公开了含有该化合物的聚合性液晶组合物和由该组合物制备的光学各向异性介质。

公开(公告)号：US20020053659A1

公开(公告)日：2002-05-09

申请号：US09826903

申请日：2001-04-06

申请人： DAINIPPON INK AND CHEMICALS, INC.

发明人： Kiyofumi Takeuchi ,  Haruyoshi Takatsu ,  Sadao Takehara ,  Masashi Osawa

IPC分类号： C09K019/52 ,  C09K019/12

CPC分类号： C09K19/2007 ,  C07C63/04 ,  C09K19/46 ,  Y10T428/10

摘要： A novel liquid crystal compound, a nematic liquid crystal composition, and a liquid crystal display system using the composition are disclosed herein. The liquid crystal compound is represented by the general formula (I): 1 wherein R represents a hydrogen atom or a straight chain alkyl group having 1 to 7 carbon atoms and each of X, Y and Z independently represents hydrogen atom or fluorine atom. The nematic liquid crystal composition of the present invention can provide liquid crystal materials in response to desired purposes even by its addition in a small amount without spoiling other characteristics.

摘要翻译： 本文公开了一种新型液晶化合物，向列型液晶组合物和使用该组合物的液晶显示系统。 液晶化合物由通式（I）表示：其中R表示氢原子或具有1至7个碳原子的直链烷基，X，Y和Z各自独立地表示氢原子或氟原子。 本发明的向列型液晶组合物可以通过少量添加而不损害其他特性而提供响应于期望目的的液晶材料。