A liquid crystal composition and a liquid crystal display element
    2.
    发明公开
    A liquid crystal composition and a liquid crystal display element 失效
    FlüssigkristallzusammensetzungundFlüssigkristallanzeigeelement

    公开(公告)号:EP0731155A1

    公开(公告)日:1996-09-11

    申请号:EP96103566.4

    申请日:1996-03-07

    IPC分类号: C09K19/46 C09K19/42 C09K19/44

    CPC分类号: C09K19/42 C09K19/44 C09K19/46

    摘要: The present invention is directed to a low viscosity liquid crystal material having a low threshold voltage, a high clearing point and a small temperature-dependency of the threshold voltage.
    The liquid crystal composition which may be used for a liquid crystal display element, contains e.g. a first component (I-1), a second component (II-a), (II-b) and a third component (III), respectively in amounts of 3 to 40%, 10 to 70% and 10 to 70% based upon the weight of the composition.
    In the following formulas, R, R 2 , R 3 , R 6 and R 7 each independently represent an alkyl group of 1-10C or an alkenyl group of 2-8C; A 1 is trans-1,4-cyclohexylene, 1,4-phenylene or 1,3-dioxane-2,5-diyl; A 2 is trans-1,4-cyclohexylene or 1,4-phenylene; B is trans-1,4-cyclohexylene, pyrimidine-2,5-diyl or 1,4-phenylene; C is trans-1,4-cyclohexylene or 1,4-phenylene; and Z 2 is -C≡C-, -COO-, -CH 2 CH 2 -, -CH=CH-, -CF=CF- or single bond:


            R 6 (̵B)̵Z 2 (̵C)̵R 7      (III)

    摘要翻译: 本发明涉及一种具有低阈值电压,高清亮点和阈值电压的较小温度依赖性的低粘度液晶材料。 可用于液晶显示元件的液晶组合物含有例如 分别为3〜40%,10〜70%,10〜70%的第1成分(I-1),第2成分(II-a),(II-b),第3成分 根据组合物的重量。 在下式中,R 1,R 2,R 3,R 6和R 7各自独立地表示1-10C的烷基或2-8C的链烯基; A 1是反式-1,4-亚环己基,1,4-亚苯基或1,3-二恶烷-2,5-二基; A 2是反式-1,4-亚环己基或1,4-亚苯基; B是反式-1,4-亚环己基,嘧啶-2,5-二基或1,4-亚苯基; C是反式-1,4-亚环己基或1,4-亚苯基; 且Z 2是-C≡C-,-COO - , - CH 2 CH 2 - , - CH = CH-,-CF = CF-或单键: R 6和R 2和R 2和R 2' C&rparstr&R <7> n

    A liquid crystal composition and display device
    8.
    发明公开
    A liquid crystal composition and display device 失效
    Flüssigkristallzusammensetzungund Anzeigevorrichtung

    公开(公告)号:EP0719849A1

    公开(公告)日:1996-07-03

    申请号:EP95120063.3

    申请日:1995-12-19

    IPC分类号: C09K19/30 C09K19/46 C09K19/42

    摘要: A LC material for TN and STN modes having a comparatively high Δn and a low viscosity is provided by a LC composition comprising a first component (formula I-c), a second component (formula II-c) and a third component (formula III or IV):



            R 3 -(B)-Z 2 -(C)-R 4      (III)



    wherein R 1 is C 1-10 alkyl; R 2 , R 3 , R 4 and R 5 are C 1-10 alkyl or C 2-10 alkenyl in which alkyl and alkenyl groups one or two non-adjacent methylenes may be replaced by -O-; R 6 is C 1-10 alkyl, alkoxy or alkoxymethyl; Z 1 and Z 3 are -CH 2 CH 2 -, -COO- or a single bond; Z 2 is -C≡C-, -COO-, -CH 2 CH 2 - or a single bond; Z 4 is -C≡C-, -COO- or a single bond; Q 1 is H or F; A 2 , B, C and E are trans-1,4-cyclohexylene or 1,4-phenylene; D is trans-1,4-cyclohexylene or 1,4-phenylene in which H(s) at 2- or 3-position may be replaced by F(s); and l is 0 or 1.

    摘要翻译: 通过包含第一组分(式Ic),第二组分(式II-c)和第三组分(式III或其组合)的LC组合物提供具有较高DELTA n和低粘度的TN和STN模式的LC材料 IV): R 3 - (B)-Z 2 - (C)-R 4 其中R 1是C 1-10烷基; R 2,R 3,R 4和R 5是C 1-10烷基或C 2-10烯基,其中一个或两个不相邻亚甲基的烷基和链烯基可被-O-取代; R 6是C 1-10烷基,烷氧基或烷氧基甲基; Z 1和Z 3是-CH 2 CH 2 - , - COO-或单键; Z 2是-C≡C-,-COO - , - CH 2 CH 2 - 或单键; Z 4是-C≡C-,-COO-或单键; Q 1是H或F; A 2,B,C和E是反式-1,4-亚环己基或1,4-亚苯基; D是其中2-或3-位上的H(s)可以被F(s)取代的反式-1,4-亚环己基或1,4-亚苯基; 且l为0或1。