发明申请
- 专利标题： Method of increasing helical twisting power, optically active compound, liquid crystal composition containing the same, and liquid crystal display device
- 专利标题（中）： 增加螺旋扭转力的方法，光学活性化合物，含有其的液晶组合物和液晶显示装置
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申请号： US10601803申请日： 2003-06-24
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公开(公告)号： US20040021128A1公开(公告)日： 2004-02-05
- 发明人: Hidetoshi Nakata , Makoto Sasaki , Kiyofumi Takeuchi , Haruyoshi Takatsu
- 申请人： Dainippon Ink and Chemicals, Inc.
- 申请人地址： JP Tokyo
- 专利权人： Dainippon Ink and Chemicals, Inc.
- 当前专利权人： Dainippon Ink and Chemicals, Inc.
- 当前专利权人地址： JP Tokyo
- 优先权： JPP2002-189821 20020628; JPP2002-285617 20020930
- 主分类号： C09K019/52
- IPC分类号： C09K019/52 ; C09K019/34 ; C09K019/30 ; C09K019/20 ; C09K019/12 ; C09K019/36
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
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