STN liquid-crystal display
    2.
    发明授权
    STN liquid-crystal display 失效
    STN液晶显示

    公开(公告)号:US6063456A

    公开(公告)日:2000-05-16

    申请号:US127808

    申请日:1998-08-03

    摘要: Supertwist liquid-crystal displays (SLCDs) with outstanding properties are obtained if the nematic liquid-crystal mixtures used therein comprise at least one compound selected from the formulae 1A and 1B ##STR1## and at least one compound of the formula 1C ##STR2## in which R.sup.a is alkyl, alkoxy, alkenyl or alkenyloxy having 1 to 12 carbon atoms,R.sup.b is alkyl or alkoxy having 1 to 5 carbon atoms,Z is --COO--, --CH.sub.2 CH.sub.2 -- or a single bond, andL.sup.a, L.sup.b, L.sup.c, L.sup.d, L.sup.e, L.sup.f, L.sup.g, and L.sup.h in each case independently of one another are H or F,with the proviso that the 1,4-phenylene rings carry not more than 2 fluorine atoms per ring,R.sup.3 is an alkenyl group having 2 to 7 carbon atoms,R.sup.4 is R.sup.a or R.sup.3 andc is 0 or 1.

    摘要翻译: 如果其中使用的向列液晶混合物包含至少一种选自式1A和1B的化合物和至少一种其中R a是烷基的烷氧基的式1C化合物,则获得具有突出特性的超扭曲液晶显示器(SLCD) ,具有1至12个碳原子的烯基或烯氧基,R b是具有1至5个碳原子的烷基或烷氧基,Z是-COO - , - CH 2 CH 2 - 或单键,并且La,Lb,Lc,Ld,Le,Lf, Lg和Lh各自独立地为H或F,条件是1,4-亚苯基环每个环上携带不多于2个氟原子,R3是具有2至7个碳原子的烯基,R4 是R a或R 3,c是0或1。

    Liquid-crystal alkenyltolan derivative, liquid-crystal composition, and liquid-crystal display element
    6.
    发明授权
    Liquid-crystal alkenyltolan derivative, liquid-crystal composition, and liquid-crystal display element 有权
    液晶链烯基二苯乙炔衍生物,液晶组合物和液晶显示元件

    公开(公告)号:US06333080B1

    公开(公告)日:2001-12-25

    申请号:US09242554

    申请日:1999-05-06

    IPC分类号: C09K1934

    摘要: A liquid crystalline alkenyltolan derivative expressed by the general formula CtH2t−1—G—(CH2)m—A1—B1—(A2—B2)n—(A3—B3)p—A4—X wherein A1, A2, A3, and A4 independently represent a 1,4-cyclohexylene, 1,4-phenylene in which one or two hydrogen atoms may be replaced by a fluorine atom(s), dioxane-2,5-diyl, or pyrimidine-2,5-diyl group; B1, B2, and B3 independently represent a covalent bond, an 1,2-ethylene, 1,2-ethenylene, 1,2-ethynylene, oxymethylene, methylenoxy, carbonyloxy, or 1,4-butylene group provided that at least one of B1, B2, and B3 represents an 1,2-ethynylene group; G represents a covalent bond or an oxygen atom; CtH2t−1 represents an alkenyl group having t carbon atoms; n and p are each 0 or 1; and X represents an alkyl group having 1 to 10 carbon atoms. The derivative provides a liquid-crystal compound and a liquid-crystal composition which have high anisotropy, high elastic constant ratio, excellent comparability with other liquid-crystal compounds, and low viscosity and are chemically and physically stable.

    摘要翻译: 由通式为Al,A2,A3和A4表示的液晶链烯基二苯乙烯衍生物独立地表示其中一个或两个氢原子可被氟原子取代的1,4-亚环己基,1,4-亚苯基, 二恶烷-2,5-二基或嘧啶-2,5-二基; B1,B2和B3独立地表示共价键,1,2-亚乙基,1,2-亚乙烯基,1,2-亚乙炔基,甲醛亚甲基,亚甲氧基,羰氧基或1,4-亚丁基,条件是至少一个 B1,B2和B3表示1,2-亚乙炔基; G表示共价键或氧原子; CtH2t-1表示具有t个碳原子的烯基; n和p各自为0或1; X表示碳原子数1〜10的烷基。 该衍生物提供了具有高各向异性,高弹性常数比,与其它液晶化合物优异可比性和低粘度并且化学和物理稳定的液晶组合物和液晶组合物。

    Naphthyl organic compounds
    7.
    发明授权
    Naphthyl organic compounds 失效
    萘基有机化合物

    公开(公告)号:US5820781A

    公开(公告)日:1998-10-13

    申请号:US470153

    申请日:1995-06-06

    摘要: R.sub.1 --A--(X).sub.m --(B).sub.n --R.sub.2 (I) R.sub.3 --J--(Y).sub.p --(Z).sub.q --R.sub.4 (II) Liquid crystal compounds of formula (I) are described, where formula (I) is given as R.sub.1 --A--(X).sub.m --(B).sub.n --R.sub.2 where A is selected from nathyl, fluorinated naphthyl, brominated naphthyl, B is selected from phenyl, methylated phenyl, brominated phenyl, fluorinated phenyl, thiophene, pyrimidine and pyridine, R.sub.1 and R.sub.2 are independently selected from alkyl, alkoxy, alkynyl, thioalkyl, Br, CN, SCN, NCS, perfluoroalkyl, perfluoroalkoxy and hydrogen, X is selected from C.tbd.C, COO and C.tbd.C, m is 0 or 1, n is 0 or 1 where m is 1 and n is 0 where m is 0; provided that where A is naphthyl, n is 1 and m is 0 then B is selected from methylated phenyl, brominated phenyl, thiophene, pyrimidine and pyridine; and further provided that where A is naphthyl, X is C.tbd.C, m is 1 and n is 1, then B is selected from thiophene, pyrimidine and pyridine. Also described are liquid crystal compounds suitable for inclusion in devices utilizing pretransitional characteristics of liquid crystalline materials in the isotropic phase and described by formula (II): R.sub.3 --J--(Y).sub.p --(Z).sub.q --R.sub.4, where J is selected from nathyl, fluorinated naphthyl, brominated naphthyl, Z is selected from phenyl, methylated phenyl, brominated phenyl, fluorinated phenyl, thiophene, pyrimidine and pyridine, R.sub.1 and R.sub.2 are independently selected from alkyl, alkoxy, alkynyl, thioalkyl, Br, CN, SCN, NCS, perfluoroalkyl, perfluoroalkoxy and hydrogen, Y is selected from C.dbd.C, COO and C.dbd.C, p is 0 or 1, q is 0 or 1 where p is 1 and q is 0 where p is 0.

    摘要翻译: R 1 -A(X)m - (B)n -R 2(I)R 3 -J-(Y)对 - (Z)q -R 4(II)式(I)的液晶化合物,其中式 I)为R1-A-(X)m-(B)n-R2,其中A选自萘基,氟化萘基,溴化萘基,B选自苯基,甲基化苯基,溴代苯基,氟化苯基,噻吩, 嘧啶和吡啶,R1和R2独立地选自烷基,烷氧基,炔基,硫代烷基,Br,CN,SCN,NCS,全氟烷基,全氟烷氧基和氢,X选自C 3BOND C,COO和C 3 C, 或1,n为0或1,其中m为1,n为0,其中m为0; 条件是其中A为萘基,n为1,m为0,则B选自甲基化苯基,溴化苯基,噻吩,嘧啶和吡啶; 并且进一步提供,其中A是萘基,X是C 3 C 6,m是1,n是1,则B选自噻吩,嘧啶和吡啶。 还描述了适于包含在利用各向同性相中并由式(II)表示的液晶材料的预过滤特性的器件中的液晶化合物:R3-J-(Y)对(Z)q-R4,其中J被选择 从萘基,氟化萘基,溴化萘基,Z选自苯基,甲基化苯基,溴化苯基,氟化苯基,噻吩,嘧啶和吡啶,R1和R2独立地选自烷基,烷氧基,炔基,硫代烷基,Br,CN,SCN ,NCS,全氟烷基,全氟烷氧基和氢,Y选自C = C,COO和C = C,p为0或1,q为0或1,其中p为1,q为0,其中p为0。

    Fluoro-substituted phenyl-cyclohexylacetylenes
    9.
    发明授权
    Fluoro-substituted phenyl-cyclohexylacetylenes 失效
    氟取代的苯基 - 环己基乙炔

    公开(公告)号:US5399292A

    公开(公告)日:1995-03-21

    申请号:US236868

    申请日:1994-05-02

    摘要: Fluoro-substituted phenyl-cyclohexylacetylenes have the formula: ##STR1## wherein R signifies alkyl, alkoxy, alkenyl or alkenyloxy with 1 or, respectively, 2 to 12 carbon atoms in which one CH.sub.2 group can be replaced by oxygen and/or one or more hydrogen atoms can be replaced by fluorine atoms, with the proviso that two oxygen atoms are not directly adjacent;A.sup.1 represents 1,4-phenylene, pyridine-2,5-diyl, pyrimidine-2,5-diyl, trans-1,4-cyclohexylene or trans-1,3-dioxane-2,5-diyl;A.sup.2 signifies trans-1,4-cyclohexylene or 1,4-phenylene which is optionally substituted with fluorine;Z.sup.1 signifies a single covalent bond, --CH.sub.2 CH.sub.2 --, --OCH.sub.2 --, --CH.sub.2 O--, --(CH.sub.2).sub.4 --, --O(CH.sub.2).sub.3 --, --(CH.sub.2).sub.3 O-- or, when ring A.sup.1 represents a saturated ring, also the trans form of --CH.dbd.CH(CH.sub.2).sub.2 -- or --CH.dbd.CHCH.sub.2 O--;Z.sup.2 signifies a single covalent bond, --CH.sub.2 --CH.sub.2 --, --OCH.sub.2 --, --CH.sub.2 O--, --(CH.sub.2).sub.4 --, --O(CH.sub.2).sub.3 --, --(CH.sub.2).sub.3 O-- or the trans form of --CH.dbd.CH(CH.sub.2).sub.2 -- or --CH.dbd.CHCH.sub.2 O--;n signifies 0 or 1;m signifies 0 or 1, with the proviso that n+m is

    摘要翻译: 氟取代的苯基 - 环己基乙炔具有下式:其中R表示具有1个或分别具有2至12个碳原子的烷基,烷氧基,烯基或烯氧基,其中一个CH 2基团可被氧和/或一个或多个 更多的氢原子可被氟原子取代,条件是两个氧原子不直接相邻; A1代表1,4-亚苯基,吡啶-2,5-二基,嘧啶-2,5-二基,反-1,4-亚环己基或反式-1,3-二恶烷-2,5-二基; A2表示任选被氟取代的反式-1,4-亚环己基或1,4-亚苯基; Z1表示单个共价键,-CH 2 CH 2 - , - OCH 2 - , - CH 2 O - , - (CH 2)4 - , - O(CH 2)3 - , - (CH 2)3 O- - 或者当环A1表示饱和环时, 也可以是-CH = CH(CH 2)2 - 或-CH = CHCH 2 O-的反式; Z 2表示单个共价键,-CH 2 -CH 2 - , - OCH 2 - , - CH 2 O-, - (CH 2)4 - , - O(CH 2)3 - , - (CH 2) CH(CH 2)2 - 或-CH = CHCH 2 O-; n表示0或1; m表示0或1,条件是n + m <1; 并且X表示氰基,-CF 3,-OCF 3,-OCHF 2,-CH = CF 2,-CH = CHCl,烷基,烯基,烷氧基,烯氧基或具有1或2至6个碳原子的烷氧基烷基或反式-1, 4-亚环己基也是-CH = CHF或-CH = CHCl或1,4-亚苯基也是氟或氯。