Tetrahydrothiophene derivatives, and their use in liquid-crystalline mixtures
    42.
    发明授权
    Tetrahydrothiophene derivatives, and their use in liquid-crystalline mixtures 失效
    四氢噻吩衍生物,以及它们在液晶混合物中的应用

    公开(公告)号:US06465060B1

    公开(公告)日:2002-10-15

    申请号:US09708852

    申请日:2000-11-07

    IPC分类号: C09K1934

    摘要: Tetrahydrothiophene derivatives of the formula (I) R1—X—(A1—M1)a—(A2—M2)b—A3—Y—T—Z—R2  (I) where the symbols and indices have the following meanings, for example: T is undirected and is tetrahydrothiophene-2,5-diyl or tetrahydrothiophene-2,4-diyl R1 is hydrogen or a straight-chain or branched C1-20-alkyl or C2-20-alkenyl radical (with or without asymmetric carbon atoms), R2 is hydrogen or a straight-chain or branched alkyl radical (with or without asymmetric carbon atoms) having 1 to 20 carbon atoms, X is a single bond, —O—, OC(═O)—, —C(═O)O— or —OC(═O)O— Y is —OC(═O)—, —SC(═O)—, —OCH2— or —CH2CH2— Z is a single bond or —O— A1, A2 and A3 are undirected different and are each, independently of one another phenylene-1,4-diyl, M1 and M2 are undirected and are each, independently of one another —OC(═O)—, —OCH2—, —CH2CH2—, —OC(═O)CH2CH2—, —OCH2CH2CH2—, —C≡C—, —CH2CH2CH2CH2— or a single bond; a and b are each, independently of one another, 0 or 1, can be used in liquid-crystal mixtures.

    摘要翻译: 其中符号和指数具有以下含义的式(I)的四氢噻吩衍生物,例如:T是无定向的,并且是四氢噻吩-2,5-二基或四氢噻吩-2,4-二基R 1是氢或直链或支链 C 2-20 - 烷基或C 2-20 - 烯基(具有或不具有不对称碳原子),R 2是氢或具有1至20个碳原子的直链或支链烷基(具有或不具有不对称碳原子),X是 单键,-O-,OC(= O) - , - C(= O)O-或-OC(= O)OY是-OC(= O) - , - SC(= O) - , - OCH 2 - 或-CH 2 CH 2 -Z是单键或-O-A 1,A 2和A 3是不同的且各自独立地彼此是亚苯基-1,4-二基,M 1和M 2是无取代的,并且各自独立地为一个 另一个-OC(= O) - , - OCH 2 - , - CH 2 CH 2 - , - OC(= O)CH 2 CH 2 - , - OCH 2 CH 2 CH 2 - , - C≡C-, - CH 2 CH 2 CH 2 CH 2 - 或单键; 彼此独立地是0或1,可以用于液晶混合物中。

    Monostable ferroelectric active-matrix display
    44.
    发明授权
    Monostable ferroelectric active-matrix display 有权
    单稳态铁电有源矩阵显示器

    公开(公告)号:US06704086B1

    公开(公告)日:2004-03-09

    申请号:US09700517

    申请日:2001-03-06

    IPC分类号: G02F1141

    CPC分类号: G02F1/1416

    摘要: The monostable ferroelectric active matrix display contains a liquid crystal layer in from of a monodomain with an unambiguously defined direction of the normal z to the layer of the smC* phase and is characterized by the fact that the normal z to the layer and the preferential direction n of the nematic or cholesteric phase (N* phase) form an angle of more than 5°.

    摘要翻译: 单稳态铁电有源矩阵显示器包含来自单畴的液晶层,具有明确定义的方向的正常z到smC *相的层,并且其特征在于:层的正常z和优选方向 向列相或胆甾醇相(N *相)的n形成大于5°的角度。

    Active matrix displays having high contrast values
    46.
    发明授权
    Active matrix displays having high contrast values 有权
    主动矩阵显示具有高对比度值

    公开(公告)号:US06482479B1

    公开(公告)日:2002-11-19

    申请号:US09626217

    申请日:2000-07-26

    IPC分类号: C09K1902

    摘要: An active matrix display comprises a chiral smectic liquid crystal mixture which has the phase sequence I—N*—SmC*, a spontaneous polarization in the operating temperature range of 10 &mgr;m at at least one temperature in the nematic or cholesteric phase and comprises at least one compound each from at least two of the substance classes (A), (B) and (C) and one or more compounds from substance class (D): (A): compounds comprising two rings which are directly linked to one another and are selected from phenylene-1,4-diyl, pyrimidine-2,5-diyl, pyridine-2,5-diyl and pyridazine-2,5-diyl with the proviso that at least one of these rings is a nitrogen heterocycle; (B): compounds comprising three rings selected from phenylene-1,4-diyl, two of the rings being directly linked to one another and the third ring being linked to one of the other two rings via an —OC(═O)— or —C(═O)—group, with the proviso that at least one of the three rings is fluorophenylene-1,4-diyl or ortho-difluorophenylene-1,4-diyl; (C): compounds comprising three rings which are directly linked to one another and are selected from phenylene-1,4-diyl, pyrimidine-2,5-diyl, pyridine-2,5-diyl and pyridazine-2,5-diyl with the proviso that at least one of these rings is a nitrogen heterocycle; (D): compounds comprising mesogenic groups suitable as components of liquid crystal mixtures.

    摘要翻译: 有源矩阵显示器包括具有相序IN * -SmC *的手性近晶液晶混合物,在-40℃/ cm 2的操作温度范围内的自发极化,在至少一个温度下的间距>10μm 向列相或胆甾型相,并且包含至少一种化合物,其各自为物质等级(A),(B)和(C)中的至少两种和一种或多种来自物质等级(D)的化合物:( A):包含两个环的化合物 它们彼此直接连接并且选自亚苯基-1,4-二基,嘧啶-2,5-二基,吡啶-2,5-二基和哒嗪-2,5-二基,条件是至少一个 这些环是氮杂环;(B):包含选自亚苯基-1,4-二基的三个环的化合物,其中两个环彼此直接相连,第三个环经由其中一个环经由 -OC(= O) - 或-C(= O) - 基团,条件是三个环中的至少一个为氟亚苯基-1,4-二基或邻 - 二氟亚苯基-1,4-二基;(C):包含三个环的化合物,其彼此直接连接并选自亚苯基-1,4-二基,嘧啶-2,5-二基,吡啶-2,5-二基 和哒嗪-2,5-二基,条件是这些环中的至少一个是氮杂环;(D):包含适合作为液晶混合物的组分的介晶基团的化合物。

    Phenanthridine derivatives, and their use in liquid-crystalline mixtures
    48.
    发明授权
    Phenanthridine derivatives, and their use in liquid-crystalline mixtures 失效
    菲啶衍生物及其在液晶混合物中的应用

    公开(公告)号:US5702638A

    公开(公告)日:1997-12-30

    申请号:US676301

    申请日:1996-07-17

    CPC分类号: C07D221/12 C09K19/3444

    摘要: Phenanthridine derivatives, and their use in liquid-crystalline mixtures A ferroelectric liquid-crystal mixture containing one or more phenanthridine derivatives of the formula (I) ##STR1## E.sup.1 and E.sup.2 are identical or different and are --N--, --CF-- or --CH--; R.sup.1 and R.sup.2 are identical or different and are, for example, a straight-chain or branched alkyl radical having 1 to 20 carbon atoms; Q is --CH.sub.2 --O--, --CO--O-- or a single bond; M.sup.1 and M.sup.2 are identical or different and are --CO--O--, --O--CO--, --CH.sub.2 --O--, --O--CH.sub.2 --, --CH.sub.2 --CH.sub.2 --, --C.tbd.C--, or a single bond; A.sup.1 and A.sup.2 are identical or different and are 1,4-phenylene, in which one or more H atoms may be replaced by F, trans-1,4-cyclohexylene, pyrimidine-2,5-diyl, pyridine-2,5-diyl, where one H atom may be replaced by F, 1,3,4-thiadiazole-2,5-diyl, 1,3-dioxane-2,5-diyl, 1,3-dithiane-2,5-diyl, 1,3-thiazole-2,4-diyl, 1,3-thiazole-2,5-diyl, thiophene-2,4-diyl or thiophene-2,5-diyl; m and n are zero or one, but their sum is at most one. Even addition of only small amounts of phenanthridine derivatives of the formula (I) gives ferroelectric liquid-crystal mixtures having high negative values for the dielectric anisotropy.

    摘要翻译: PCT No.PCT / EP95 / 00312 Sec。 371日期:1996年7月17日 102(e)日期1996年7月17日PCT提交1995年1月30日PCT公布。 WO95 / 21227 PCT出版物 日期:1995年8月10日苯胺衍生物及其在液晶混合物中的应用含有一种或多种式(I)E1和E2的菲啶衍生物的铁电液晶混合物是相同或不同的, N-,-CF-或-CH-; R1和R2相同或不同,为例如具有1至20个碳原子的直链或支链烷基; Q是-CH 2 -O-,-CO-O-或单键; M 1和M 2相同或不同,为-CO-O-,-O-CO-,-CH 2 -O - , - O-CH 2 - , - CH 2 -CH 2 - , - C 3BOND C-或单键; A1和A2相同或不同,为1,4-亚苯基,其中一个或多个H原子可被F,反式-1,4-亚环己基,嘧啶-2,5-二基,吡啶-2,5-二基代替, 二基,其中一个H原子可被F取代,1,3,4-噻二唑-2,5-二基,1,3-二恶烷-2,5-二基,1,3-二噻烷-2,5-二基, 1,3-噻唑-2,4-二基,1,3-噻唑-2,5-二基,噻吩-2,4-二基或噻吩-2,5-二基; m和n是零或一个,但它们的和最多为一个。 甚至只加入少量式(I)的菲啶衍生物,得到介电各向异性具有高负值的铁电液晶混合物。

    Monostable ferroelectric active matrix display
    49.
    发明授权
    Monostable ferroelectric active matrix display 有权
    单稳态铁电有源矩阵显示

    公开(公告)号:US06605323B1

    公开(公告)日:2003-08-12

    申请号:US09719037

    申请日:2001-04-23

    IPC分类号: C09K1934

    摘要: In a monostable ferroelectric active matrix display comprising a liquid-crystal layer in the form of a monodomain having an unambiguously defined direction of the layer normals z of the smC* phase, the layer normals z and the preferential direction n of the nematic or cholesteric phase (N* phase) form an angle of more than 5°.

    摘要翻译: 在单稳态铁电有源矩阵显示器中,包括具有明确定义的smC *相的层法线z的单畴形式的液晶层,层法线z和向列相或胆甾相的优选方向n (N *相)形成大于5°的角度。