发明申请
- 专利标题: Difluorovinyl compound, liquid crystal composition and liquid crystal display
- 专利标题(中): 二氟乙烯基化合物,液晶组合物和液晶显示
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申请号: US09899169申请日: 2001-07-06
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公开(公告)号: US20020033472A1公开(公告)日: 2002-03-21
- 发明人: Takashi Kato , Shuichi Matsui , Hiroyuki Takeuchi , Yasuhiro Kubo , Etsuo Nakagawa
- 申请人: CHISSO CORPORATION
- 申请人地址: null
- 专利权人: CHISSO CORPORATION
- 当前专利权人: CHISSO CORPORATION
- 当前专利权人地址: null
- 优先权: JP2000-207243 20000707
- 主分类号: C09K019/34
- IPC分类号: C09K019/34 ; C09K019/30 ; C07C025/13 ; C09K019/52
摘要:
Provided are a liquid crystalline compound having a wide liquid crystal phase temperature range, low viscosity, a large elastic constant ratio K33/K11 and excellent solubility at low temperature, a liquid crystal composition using the same and a liquid crystal display. Provided is a novel difluorovinyl compound is represented by Formula (1): 1 wherein Y1 represents H or a straight chain or branched alkyl group having 1 to 10 carbon atoms, and optional nullC2null in the above alkyl group may be replaced by nullOnull or nullCnullCHnull, but nullOnull is not adjacent to each other, and at least one H in Y1 may be substituted with halogen or a cyano group; A1, A2, A3 and A4 each independently represent 1,4-cyclohexenylene in which optional nullC2null which is not adjacent to each other may be replaced by nullOnull, 1,4-phenylene in which optional H may be substituted with halogen, and a single bond, in which at least two of A1, A2, A3 and A4 have the ring structure described above, and at least one of them is 1,4-cyclohexenylene in which nullC2null is replaced by nullOnull; Z1, Z2 and Z3 each independently represent a single bond, null(CH2)2null, nullCnullCHnull, null(CH2)4null, nullO(CH2)3null or null(CH2)3Onull; n represents 0 or an integer of 1 to 10, provided that when any of A1, A2, A3 and A4 is 1,4-phenylene, Z1, Z2 and Z3 are single bonds, and among them, when A1 is 1,3-dioxane-2,5-diyl and A2 is 1,4-phenylene and when A3 is 1,4-cyclohexylene and A4 is a single bond, Y1 is H, and n is not 0.