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    LIQUID CRYSTALLINE MEDIUM
    1.
    发明申请
    LIQUID CRYSTALLINE MEDIUM 审中-公开
    液晶介质

    公开(公告)号：WO1991002779A1

    公开(公告)日：1991-03-07

    申请号：PCT/EP1990001359

    申请日：1990-08-18

    申请人： MERCK PATENT GESELLSCHAFT MIT BESCHRÄNKTER ... ,  COATES, David ,  GREENFIELD, Simon ,  SCHEUBLE, Bernhard ,  WÄCHTLER, Andreas ,  HITTICH, Reinhard ,  RIEGER, Bernhard ,  PLACH, Herbert ,  BARTMANN, Ekkehard

    发明人： MERCK PATENT GESELLSCHAFT MIT BESCHRÄNKTER ...

    IPC分类号： C09K19/30

    CPC分类号： C09K19/3001 ,  C09K19/3003 ,  C09K19/3028

    摘要： Liquid crystalline medium having a high specific resistance and based on a mixture of polar compounds having a dielectric anisotropy greater than +1.5, characterized in that it contains one or more compounds chosen from the group of compounds of formula (Ia), (Ib) and (Ic), where each residue E is a single bond or one of the residues E can also denote -CH2CH2-, and L?1 and L2¿ can denote H or one of the residues L?1 and L2¿ can also denote fluorine, ring B denotes α or β, R?1 and R2¿ independently denote n-alkyl, in which a CH¿2? group can also be replaced by -0-, -CHHal-, CHal2- or -CH=CH-, and X and Y independently denote H or F, provided that at least one of the residues X and Y in the molecule of formula (Ib) or (Ic) denotes F.

    摘要翻译： 基于具有大于+1.5的介电各向异性的极性化合物的混合物的具有高电阻率的液晶介质，其特征在于其包含一种或多种选自式（Ia ，（Ib）和（Ic），其中每个残基E是单键或残基E中的一个还可以代表-CH 2 CH 2 - ，并且L 1和L 2可以代表H，或残基L 1和L 2中的一个 也可以代表氟，环状化合物B代表α或β，R1和R2独立地代表正烷基，其中CH2基团也可以被-O-，CHHal-，-CHal2-或-CH = CH-代替， 并且X和Y独立地表示H或F，条件是式（Ib）或（Ic）分子中的X和Y残基中的至少一个表示F.

    LIQUID CRYSTALLINE PHASE
    5.
    发明申请
    LIQUID CRYSTALLINE PHASE 审中-公开
    液晶相

    公开(公告)号：WO1986003769A1

    公开(公告)日：1986-07-03

    申请号：PCT/DE1985000550

    申请日：1985-12-20

    申请人： MERCK PATENT GESELLSCHAFT MIT BESCHRÄNKTER ... ,  SCHEUBLE, Bernhard ,  WEBER, Georg ,  HITTICH, Reinhard ,  WÄCHTLER, Andreas

    发明人： MERCK PATENT GESELLSCHAFT MIT BESCHRÄNKTER ...

    IPC分类号： C09K19/42

    CPC分类号： C09K19/3441 ,  C09K19/20 ,  C09K19/2007 ,  C09K19/3001 ,  C09K19/3402 ,  C09K19/42 ,  C09K2019/3422

    摘要： Liquid crystalline phases characterized in that they have at least one compound of formula (I), wherein R1 is an alkyl having between 1 and 12 atoms of carbon, one or two non adjacent CH2 groups which may be replaced by O atoms or -CO-, -O-CO-, -CO-O- and/or -CH=CH- groups, Ao and A1 represent independently from each other, Cy, Dio, Pyr or Phe, Z is -CO-O-, -O-CO-, -CH2-O-, -O-CH2- or a single bond, X1 is F, Cl, -CN or -NCS, X2 is F, Cl and in the case where X1 = NCS, H2 is also H, m is equal to 0 or 1, Cy is trans-1,4-cyclohexylene, Pyr is pyrimidine-2,5-diyle ou pyridine-2,5-diyl, Dio is trans-1,3-dioxane-2,5-diyl and Phe is 1,4-phenylen, and at least one compound having the formula (II), wherein R2 is alkyl having between 1 and 12 atoms of carbon, one or two non adjacent CH2 groups which may be substituted by O atoms, -CO-, -O-CO-, -CO-O- and/or -CH=CH-; R3 is alkyl having between 1 and 12 atoms of carbon, one or two non adjacent C2 groups which may be substituted by O atoms, -CO-, -O-CO-, -CO-O- and/or -CH=CH- groups, F, Cl or CN; A2 and A3 are Phe or Cy, n is equal to 0, 1 or 2 and Z, Dio, Phe and Cy have the meanings given hereabove. Said phases have particularly low threshold tensions.