发明授权
- 专利标题: Substituted benzene derivative, liquid crystal composition, and liquid crystal display element
- 专利标题(中): 取代苯衍生物,液晶组合物和液晶显示元件
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申请号: US09917271申请日: 2001-07-30
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公开(公告)号: US06579577B2公开(公告)日: 2003-06-17
- 发明人: Tomoyuki Kondo , Shuichi Matsui , Kazutoshi Miyazawa , Hiroyuki Takeuchi , Yasuhiro Kubo , Fusayuki Takeshita , Etsuo Nakagawa
- 申请人: Tomoyuki Kondo , Shuichi Matsui , Kazutoshi Miyazawa , Hiroyuki Takeuchi , Yasuhiro Kubo , Fusayuki Takeshita , Etsuo Nakagawa
- 优先权: JP8-272857 19960925
- 主分类号: C09K1912
- IPC分类号: C09K1912
摘要:
There is provided a liquid crystalline compound having a high voltage holding ratio which has a very small degree of temperature dependence, a low threshold voltage which has a very small degree of temperature dependence, a high &Dgr;n, and excellent miscibility with other liquid crystal materials at low temperature; a liquid crystal composition; and a liquid crystal display element, and the liquid crystalline compound is a substituted benzene derivative represented by general formula (1), where, R represents a straight chain or branched alkyl group having 1 to 20 carbon atoms in which each of optional and nonadjacent methylene groups (—CH2—) may be substituted by an oxygen atom; X represents a halogen atom, —CF3, —CF2H, —CFH2, —OCF3 or —OCF2H; each of Z1 and Z2 independently represents —(CH2)2—, —(CH2)4—, —CH2O—, —OCH2— or a covalent bond, but Z1 and Z2 are not covalent bonds simultaneously; each of Y1, Y2, Y3, Y4, Y5, and Y6 independently represents H or F, but at least one of Y1, Y2, Y3, and Y4 represents F.