发明授权
- 专利标题： Liquid crystal compounds exhibiting negative anisotropy of permittivity, liquid crystal compositions, and liquid crystal displays
- 专利标题（中）： 显示介电常数各向异性的液晶化合物，液晶组合物和液晶显示器
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申请号： US09319008申请日： 1999-05-28
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公开(公告)号： US06210761B1公开(公告)日： 2001-04-03
- 发明人: Tomoyuki Kondo , Shuichi Matsui , Kazutoshi Miyazawa , Hiroyuki Takeuchi , Fusayuki Takeshita , Etsuo Nakagawa
- 申请人： Tomoyuki Kondo , Shuichi Matsui , Kazutoshi Miyazawa , Hiroyuki Takeuchi , Fusayuki Takeshita , Etsuo Nakagawa
- 优先权： JP8-332767 19961128
- 主分类号： C09K1912
- IPC分类号： C09K1912
摘要：
The present invention is to provide liquid crystalline compounds which exhibit a negative dielectric anisotropy value, have an extremely high voltage holding ratio and a low threshold voltage, are remarkably small in their dependency on temperature, hardly exhibit smectic phase, and are excellent in miscibility with other liquid crystal materials; to provide liquid crystal compositions comprising the liquid crystalline compound; and to provide liquid crystal display devices fabricated by using the liquid crystal composition; the liquid crystalline compounds are expressed by the following general formula (1) wherein Ra, Rb, Y1 to Y6, Z1 and Z2 are herein defined.