Ester derivate, liquid crystal composition and liquid crystal display element
    2.
    发明公开
    Ester derivate, liquid crystal composition and liquid crystal display element 失效
    Esterderivat,flüssigkristallineZusammensetzung undflüssigkristallineAnzeigevorrichtung

    公开(公告)号:EP0738709A3

    公开(公告)日:1997-07-16

    申请号:EP96102672.1

    申请日:1996-02-22

    摘要: A novel liquid crystalline compound having a large dielectric anisotropy value, a small change in the threshold voltage depending upon temperatures, and an improved solubility in other liquid crystal materials at low temperatures, and a liquid crystal composition containing the compound are provided,
       which liquid crystalline compound is expressed by the formula (1)
    wherein R is H or an alkyl group of 1 to 10C; ℓ is an integer of 1 to 9; m, n and o are each independently 0 or 1; A 1 , A 2 and A 3 are each independently trans-1,4-cyclohexylene group, 1,4-pheylene group, one or more H atoms on the ring of which group may be replaced by F, or the like group; Z 1 , Z 2 and Z 3 are each independently -COO-, etc., but at least one member of them is -COO-; X is CF 3 ,etc.; and Y 1 and Y 2 are each independently H or F.

    摘要翻译: 提供了具有大介电各向异性值的新型液晶化合物,阈值电压取决于温度的小变化,以及在低温下其它液晶材料的溶解度提高,以及含有该化合物的液晶组合物, 化合物由式(1)表示其中R表示1〜10个碳原子的烷基; l表示1〜9的整数, m和n各自独立地表示0或1; A1,A2和A3各自独立地表示反式-1,4-亚环己基,1,4-亚苯基或1,3-二恶烷-2,5-二基; Z 1,Z 2和Z 3各自独立地表示-COO - , - (CH 2)2 - 或其中至少一个表示-COO-的共价键; X表示CF 3,CF 2 H,CFH 2,OCF 3或OCF 2 H; Y1和Y2各自独立地表示H或F,条件是Y1和Y2中的至少一个为F; 条件是当m + n = 1时,Z 3表示-COO-。

    Liquid crystal composition and liquid crystal display device
    4.
    发明公开
    Liquid crystal composition and liquid crystal display device 失效
    液晶组合物和液晶显示装置

    公开(公告)号:EP0728830A3

    公开(公告)日:1996-09-04

    申请号:EP96102671.3

    申请日:1996-02-22

    IPC分类号: C09K19/46 C09K19/30

    摘要: A liquid crystal composition is disclosed which contains, as the first component, at least one compound expressed by any one of the formulas (1-1) to (1-3) and contains, as the second component, at least one compound expressed by any one of the formulas (2-1) to (2-7) each of the formulas is recited in the specification. According to the present invention, a liquid crystal composition which particularly has a small V th, is excellent in compatibility at low temperatures, and has a large nematic phase range can be provided while satisfying several characteristics required for liquid crystal compositions for AM-LCD.

    摘要翻译: 公开了一种液晶组合物,其含有至少一种由式(1-1)至(1-3)中任一个表示的化合物作为第一组分,并含有至少一种由以下式表示的化合物作为第二组分: 在说明书中记载了式(2-1)〜(2-7)中的任一式。 根据本发明,可以提供特别具有小Vth的低温相容性优异且具有大的向列相范围的液晶组合物,同时满足AM-LCD用液晶组合物所需的若干特性。

    Process for producing biaryl compound
    7.
    发明公开
    Process for producing biaryl compound 失效
    Verfahren zur Herstellung von Biarylverbindungen

    公开(公告)号:EP0743293A1

    公开(公告)日:1996-11-20

    申请号:EP96107781.5

    申请日:1996-05-15

    IPC分类号: C07B37/04

    摘要: A novel process for producing a biaryl compound represented by formula (III), which is useful as a medicine, an agricultural chemical and an electrooptical liquid-crystal display material:

            Ar-Ar'     (III)

    (wherein Ar and Ar' each independently represents a substituted or unsubstituted aromatic group) which comprises the steps of (i) reacting a trialkoxysilyl-substituted aromatic compound represented by formula (I):

            Ar-Si(OR) 3      (I)

    (wherein Ar has the same meaning as defined above and R represents an alkyl group having from 1 to 5 carbon atoms) with a fluoride ion source in the presence of a solvent, and then (ii) adding thereto an aromatic compound represented by formula (II):

            X-Ar'     (II)

    (wherein X represents an eliminating group and Ar' has the same meaning as defined above) and a catalyst comprising a transition metal of tenth group to conduct a further reaction.

    摘要翻译: 用于生产由式(III)表示的联芳基化合物的新方法,其可用作药物,农药和电光液晶显示材料:Ar-Ar'(其中Ar和Ar'各自独立地表示取代或 未取代的芳族基团),其包括以下步骤:(i)使由式(I)表示的三烷氧基甲硅烷基取代的芳族化合物:Ar-Si(OR)3(其中Ar具有与上述相同的含义,R表示具有 1至5个碳原子)与氟离子源在溶剂存在下,然后(ii)向其中加入由式(II)表示的芳族化合物:X-Ar'(其中X表示除去基团和Ar' 具有与上述相同的含义)和包含第十族过渡金属进行进一步反应的催化剂。

    Liquid crystal composition and liquid crystal display device
    8.
    发明公开
    Liquid crystal composition and liquid crystal display device 失效
    FlüssigkristallzusammensetzungundFlüssigkristallanzeigevorrichtung

    公开(公告)号:EP0728830A2

    公开(公告)日:1996-08-28

    申请号:EP96102671.3

    申请日:1996-02-22

    IPC分类号: C09K19/46 C09K19/30

    摘要: A liquid crystal composition is disclosed which contains, as the first component, at least one compound expressed by any one of the formulas (1-1) to (1-3) and contains, as the second component, at least one compound expressed by any one of the formulas (2-1) to (2-7) each of the formulas is recited in the specification.
    According to the present invention, a liquid crystal composition which particularly has a small V th, is excellent in compatibility at low temperatures, and has a large nematic phase range can be provided while satisfying several characteristics required for liquid crystal compositions for AM-LCD.

    摘要翻译: 公开了含有作为第一成分的至少一种由式(1-1)至(1-3)中任一项表示的化合物并含有作为第二成分的至少一种化合物的液晶组合物,所述化合物由 在说明书中列举了各式中的任何一个式(2-1)至(2-7)。 根据本发明,特别是具有小Vth的液晶组合物在低温下的相容性优异,并且可以提供具有大的向列相范围,同时满足AM-LCD液晶组合物所需的若干特性。