Alkenyl compound, liquid crystal composition, and liquid crystal display device
    13.
    发明授权
    Alkenyl compound, liquid crystal composition, and liquid crystal display device 失效
    烯基化合物,液晶组合物和液晶显示装置

    公开(公告)号:US06231934B1

    公开(公告)日:2001-05-15

    申请号:US09155348

    申请日:1998-09-28

    IPC分类号: C09K1934

    摘要: The liquid crystalline compound is expressed by the general formula (1) Ra-A1-Z1-A2-Z2-A3-Z3-A4-Rb   (1) wherein Ra represents an alkenyl group having 2 to 20 carbon atoms or an alkyl group having 1 to 20 carbon atoms any methylene group (—CH2—) in the alkenylene or alkyl group may be replaced by —O—, —S—, —CO—, —CH═CH—, or —C≡C—, but in no case —O— and/or —S— continues, and any hydrogen atom in Ra may be replaced by a halogen atom; Rb represents Ra, a halogen atom, or cyano group provided that at least one of Ra and Rb represents a group having double bond; A1, A2, A3, and A4 independently represent trans-1,4-cyclohexylene group, 1,4-phenylene group any hydrogen atom on the ring may be replaced by fluorine atom or cyano group, cyclohexenediyl group, pyridine-2,5-diyl group, pyrimidine-2,5-diyl group, or 1,3-dioxane-2,5-diyl group; and Z1, Z2, and Z3 independently represent an alkenylene group having 2 to 4 carbon atoms, —(CH2)2—, —COO—, —OCO—, —C≡C—, —CH2O—, —OCH2—, or single bond any hydrogen atom in the groups may be replaced by a halogen atom provided that at least one of Z1, Z2, and Z3 represents an alkenylene group having 2 to 4 carbon atoms.

    摘要翻译: 液晶化合物由通式(1)表示,其中R a表示具有2至20个碳原子的烯基或具有1至20个碳原子的烷基,亚烯基或烷基中的任何亚甲基(-CH 2 - )可以 被-O - , - S - , - CO - , - CH = CH-或-C = C-取代,但不限于-O-和/或-S-,Ra中的任何氢原子 被卤素原子取代; Rb表示Ra,卤素原子或氰基,Ra和Rb中的至少一个表示具有双键的基团; A1,A2,A3和A4独立地表示反式-1,4-亚环己基,1,4-亚苯基,环上的任何氢原子可以被氟原子或氰基取代,环己烯二基,吡啶-2,5- 二基,嘧啶-2,5-二基或1,3-二恶烷-2,5-二基; 且Z 1,Z 2和Z 3独立地表示具有2至4个碳原子的亚烯基, - (CH 2)2 - , - COO - , - OCO - , - C = C - , - CH 2 O - , - OCH 2 - 键中的任何氢原子可以被卤素原子代替,条件是Z 1,Z 2和Z 3中的至少一个表示具有2至4个碳原子的亚烯基。

    Alkenylcyclohexane derivatives, liquid crystal composition and liquid
crystal display element
    17.
    发明授权
    Alkenylcyclohexane derivatives, liquid crystal composition and liquid crystal display element 失效
    烯基环己烷衍生物,液晶组合物和液晶显示元件

    公开(公告)号:US5776367A

    公开(公告)日:1998-07-07

    申请号:US666832

    申请日:1996-06-19

    摘要: A novel liquid crystalline compound having a low viscosity and a high elastic constant ratio and at the same time, a superior compatibility with other known liquid crystalline compounds, and a liquid crystal composition and a liquid crystal display element containing the novel compound, are provided. The compound is an alkenylcyclohexane derivative expressed by the formula (1): ##STR1## wherein R.sup.1 and R.sup.2 represent a linear or branched alkyl group of 1 to 15 carbon atoms or alkenyl group of 2 to 15 carbon atoms; at least one of R.sup.1 and R.sup.2 represents an alkenyl group; in these groups, one or more non-adjacent CH.sub.2 groups may be replaced by oxygen atom, sulfur atom or --C.tbd.C-- group; ring A.sup.1, ring A.sup.2 and ring A.sup.3 each independently represent 1,4-cyclohexylene group wherein one or more CH.sub.2 groups on the ring may be replaced by oxygen atom or sulfur atom, or 1,4-phenylene group wherein one or more CH groups on the ring may be replaced by nitrogen atom; Z.sup.1 and Z.sup.2 each independently represent --CH.sub.2 CH.sub.2 --, --CH.sub.2 O--, --OCH.sub.2 --, --CH.dbd.CH--, --C.tbd.C-- or single bond; Z.sup.3 represents --(CH.sub.2).sub.4 --, --CH.dbd.CH--(CH.sub.2).sub.2 --, --CH.sub.2 --CH.dbd.CH--CH.sub.2 -- or --(CH.sub.2).sub.2 --CH.dbd.CH--; and m, n and i each independently represent 0 or 1.

    摘要翻译: 提供了具有低粘度和高弹性常数比的新型液晶化合物,同时与其它已知的液晶化合物具有优异的相容性,以及液晶组合物和含有该新化合物的液晶显示元件。 化合物是由式(1)表示的烯基环己烷衍生物:其中R1和R2表示碳原子数为1〜15的直链或支链烷基或碳原子数2〜15的烯基; R 1和R 2中的至少一个表示烯基; 在这些基团中,一个或多个不相邻的CH 2基团可以被氧原子,硫原子或-C 3 D C基团取代; 环A1,环A2和环A3各自独立地表示1,4-亚环己基,其中环上的一个或多个CH 2基团可以被氧原子或硫原子替代,或1,4-亚苯基,其中一个或多个CH基团在 该环可以被氮原子取代; Z 1和Z 2各自独立地表示-CH 2 CH 2 - , - CH 2 O - , - OCH 2 - , - CH = CH - , - C 3BOND C-或单键; Z 3表示 - (CH 2)4 - , - CH = CH-(CH 2)2 - , - CH 2 -CH = CH-CH 2 - 或 - (CH 2)2 -CH = CH-; m,n和i各自独立地表示0或1。

    Difluorophenyl derivatives, liquid-crystal compounds, and liquid-crystal composition
    19.
    发明授权
    Difluorophenyl derivatives, liquid-crystal compounds, and liquid-crystal composition 有权
    二氟苯基衍生物,液晶化合物和液晶组合物

    公开(公告)号:US06458433B1

    公开(公告)日:2002-10-01

    申请号:US09331058

    申请日:1999-06-16

    IPC分类号: C09K1934

    摘要: Disclosed are liquid crystalline compounds which (i) are characterized in that the compounds have a wide temperature range in which the compounds exhibit a liquid crystal phase, are low in viscosity, and have a negative and large &Dgr;&egr;, (ii) are readily mixed with other various liquid crystal materials even at low temperatures, and (iii) are useful as component of liquid crystal compositions suitable both for TFT type display mode and IPS mode; and liquid crystal composition comprising the liquid crystalline compound; the compounds are expressed by the general formula (1) wherein R1 represents an alkyl group having 1 to 15 carbon atoms; ring A1, ring A2, and ring A3 independently represent trans-1,4-cyclohexylene group, trans-1,4-silacyclohexylene group, pyrimidine-2,5-diyl group, pyridine-2,5-diyl group, 1,3-dioxane-2,5-diyl group, tetrahydropyran-2,5-diyl group, 1,3-dithian-2,5-diyl group, or tetrahydrothiopyran-2,5-diyl group, or 1,4-phenylene group in which one or more hydrogen atoms on the six-membered ring may be replaced by a halogen atom; X1, X2, and X3 independently represent —(CH2)4—, —(CH2)3O—, —O(CH2)3—, or single bond; Y1 represents hydrogen atom or an alkyl group having 1 to 15 carbon atoms; m and n are independently 0 or 1; and any atom which constitutes this compound may be replaced by its isotope.

    摘要翻译: 本发明提供的液晶化合物,其特征在于化合物具有宽的温度范围,其中化合物表现出液晶相,粘度低,并且具有负的和大的DELTAepsi,(ii)容易与 其它各种液晶材料即使在低温下,也可用作液晶组合物,适用于TFT型显示模式和IPS模式; 以及包含所述液晶化合物的液晶组合物; 化合物由通式(1)表示,其中R 1表示具有1至15个碳原子的烷基; 环A1,环A2和环A3独立地表示反式-1,4-亚环己基,反-1,4-亚环己基,嘧啶-2,5-二基,吡啶-2,5-二基,1,3 四烷基-2,5-二基,四氢吡喃-2,5-二基,1,3-二噻烷-2,5-二基或四氢噻喃-2,5-二基,或1,4-亚苯基 六元环上的一个或多个氢原子可以被卤素原子取代; X1,X2和X3独立地表示 - (CH2)4-, - (CH2)3O-,-O(CH2)3-或单键; Y1表示氢原子或碳原子数1〜15的烷基。 m和n独立地为0或1; 并且构成该化合物的任何原子可以被其同位素代替。

    Fluoroalkenyl derivative and liquid crystal composition
    20.
    发明授权
    Fluoroalkenyl derivative and liquid crystal composition 失效
    氟烯基衍生物和液晶组合物

    公开(公告)号:US5989452A

    公开(公告)日:1999-11-23

    申请号:US51353

    申请日:1998-04-08

    CPC分类号: C09K19/04 C07C22/00 C07C22/08

    摘要: The present invention is to provide liquid crystalline compounds having a wide temperature range of a liquid crystal phase, low viscosity, and large ratio of elastic constants; liquid crystal compositions comprising the compound; and liquid crystal display devices comprising the composition; the liquid crystalline compounds being fluoroalkenyl derivatives expressed by the general formula (1) ##STR1## wherein A.sub.1, A.sub.2, A.sub.3, and A.sub.4 independently represent trans-1,4-cyclohexylene group or 1,4-phenylene group; Z.sub.1, Z.sub.2, and Z.sub.3 independently represent --(CH.sub.2).sub.2 --, --CH.dbd.CH--, --C.ident.C--, or a single bond; Q represents H or F; l is an integer of 1 to 5; m, n, and o are independently an integer of 0 to 5; p and q are independently an integer of 0 or 1; and each element which constitutes the derivatives may be an isotope of the element.

    摘要翻译: PCT No.PCT / JP96 / 02950 Sec。 371日期:1998年4月8日 102(e)1998年4月8日PCT PCT 1996年10月11日PCT公布。 出版物WO97 / 13738 日期1997年04月17日本发明提供具有液晶相的宽温度范围的液晶化合物,粘度低,弹性常数比大; 包含该化合物的液晶组合物; 和包含该组合物的液晶显示装置; 由通式(1)表示的氟烯基衍生物的液晶化合物,其中A1,A2,A3和A4独立地表示反式-1,4-亚环己基或1,4-亚苯基; Z 1,Z 2和Z 3独立地表示 - (CH 2)2 - , - CH = CH - , - C = C-或单键; Q表示H或F; l为1〜5的整数, m,n和o分别为0〜5的整数。 p和q独立地为0或1的整数; 并且构成衍生物的每个元素可以是元素的同位素。