Cycloolefin copolymers (COCS) as substrate material for liquid-crystal
displays
    3.
    发明授权
    Cycloolefin copolymers (COCS) as substrate material for liquid-crystal displays 失效
    环烯烃共聚物(COCS)作为液晶显示器的基材

    公开(公告)号:US5744664A

    公开(公告)日:1998-04-28

    申请号:US341306

    申请日:1994-11-16

    CPC分类号: C08F32/00

    摘要: A substrate for liquid-crystal displays is formed from polymers of polycyclic olefins by polymerization, without ring opening, of at least one monomer of the formula (I), (II), (III), (IV), (V) or (VI). The novel use of cycloolefin copolymers as substrate material facilitates process temperatures of above 180.degree. C. in the production of displays. Cycloolefin copolymers are lighter and less brittle than glass. Compared with other plastics, they have advantages in photoelastic constants, thermal expansion, hardness, density, transparency, water absorption and with respect to birefringence. Furthermore, they have high resistance to polar solvents.

    摘要翻译: 用于液晶显示器的基材由多环烯烃的聚合物通过聚合而不具有开环的至少一种式(I),(II),(III),(IV),(V)或( VI)。 环烯烃共聚物作为基材的新用途有利于在显示器生产中高于180℃的工艺温度。 环烯烃共聚物比玻璃更轻,不易脆。 与其他塑料相比,它们具有光弹性常数,热膨胀,硬度,密度,透明度,吸水性和双折射优点。 此外,它们对极性溶剂具有高抗性。

    3-Chloropyridines, and their use in liquid-crystal mixtures
    4.
    发明授权
    3-Chloropyridines, and their use in liquid-crystal mixtures 失效
    3-氯吡啶,以及它们在液晶混合物中的应用

    公开(公告)号:US5629428A

    公开(公告)日:1997-05-13

    申请号:US240240

    申请日:1994-05-10

    摘要: 3-Chloropyridines, process for their preparation, and their use in liquid-crystal mixturesA 3-chloropyridine of the formula (I) ##STR1## in which the symbols have the following meaning: R.sup.1 and R.sup.2, independently of one another, are, for example, H or straight-chain or branched alkyl, A.sup.1, A.sup.2, A.sup.3 and A.sup.4 are identical or different and are, for example, 1,4-phenylene, pyrazine-2,5-diyl or trans-1,4-cyclohexylene, M.sup.1, M.sup.2, M.sup.3 and M.sup.4 are identical or different and are, for example, --O-- or --CO--O--, R.sup.3, R.sup.4, R.sup.6 and R.sup.7, independently of one another are, for example, H or straight-chain or branched alkyl, M.sup.5 is, for example, --O--CO-- or a single bond, k, l, m, n, o, p, q and r are zero or one, with the proviso that the sum k+m+p+r is less than 4 and greater than zero, can advantageously be employed as a component in ferroelectric liquid-crystal mixtures.

    摘要翻译: 3-氯吡啶,其制备方法及其在液晶混合物中的应用将式(I)的3-氯吡啶(I)(M3)o(A3)p(M4)q(A4)rR2在 这些符号具有以下含义:R 1和R 2彼此独立地为例如H或直链或支链烷基,A 1,A 2,A 3和A 4相同或不同,为例如1, 4-亚苯基,吡嗪-2,5-二基或反-1,4-亚环己基,M1,M2,M3和M4相同或不同,为例如-O-或-CO-O-,R3,R4 R 6和R 7彼此独立地是例如H或直链或支链烷基,M 5是例如-O-CO-或单键,k,l,m,n,o,p ,q和r为零或一个,条件是和k + m + p + r小于4且大于零,可有利地用作铁电液晶混合物中的组分。

    Smectic liquid-crystal mixture
    5.
    发明授权
    Smectic liquid-crystal mixture 失效
    近晶液晶混合物

    公开(公告)号:US5443752A

    公开(公告)日:1995-08-22

    申请号:US224325

    申请日:1994-04-07

    摘要: A smectic liquid-crystal mixture comprisingA. at least one compound of the formula (I) ##STR1## B. at least one compound of the formula (III) ##STR2## C. compounds of the formula (IV)R.sup.1 --O--CO--O--(--A.sup.1).sub.a (--M.sup.1).sub.b (--A.sup.2).sub.c (--M.sup.2).sub.d (--A.sup.3).sub.e (--O).sub.f --R.sup.2 (IV)in which:R.sup.1 and R.sup.2 are identical or different and are a straight-chain or branched alkyl group having 1 to 22 or 3 to 22 carbon atoms respectively,A.sup.1, A.sup.2 and A.sup.3 are identical or different and are 1,4-phenylene, where one or two H atoms may also be replaced by F, 2,5-pyrimidinediyl,and further smectogenic compounds and, if desired, dopants. The mixture exhibits a low melting point and a broad S.sub.c phase.

    摘要翻译: (I)的至少一种化合物(I)B。至少一种式(III)的化合物。(III)C.式 IV)R1-O-CO-O - ( - A1)a(-M1)b(-A2)c(-M2)d(-A3)e(-O)f-R2(IV)其中:R1和 R2相同或不同,分别为具有1至22或3至22个碳原子的直链或支链烷基,A1,A2和A3相同或不同,为1,4-亚苯基,其中一个或两个H原子 也可以被F,2,5-嘧啶二基和进一步的造虫化合物和如果需要的掺杂剂替代。 该混合物显示出低熔点和宽Sc相。

    Modified polysugar as the alignment layer for liquid-crystal displays
    6.
    发明授权
    Modified polysugar as the alignment layer for liquid-crystal displays 失效
    改性多糖作为液晶显示器的取向层

    公开(公告)号:US5405552A

    公开(公告)日:1995-04-11

    申请号:US103916

    申请日:1993-08-09

    CPC分类号: G02F1/133711 G02F1/141

    摘要: Modified polysugar as an alignment layer for liquid-crystal displaysAn alignment layer for liquid-crystal displays (LCDs) containsa) at least one oligomer/polymer of a 6-membered cyclic sugar unit all or some of whose free OH groups may be derivatized and which carries equatorial substituents in the 2-, 3- and 6-positions on the ring, andb) at least one compound from the group consisting of macrocyclic compounds, cryptands, coronands, podands, mercapto compounds and ionophores.LCDs which contain an alignment layer according to the invention are particularly distinguished by good contrast and bright-transmission values and by good alignment of the liquid crystal.

    摘要翻译: 用于液晶显示器的改性多晶硅用于液晶显示器(LCD)的取向层包含a)至少一种6元环状糖单元的至少一种低聚物/聚合物,其全部或部分的游离OH基团可被衍生化 并且其在环上的2-,3-和6-位上带有赤道取代基,和b)至少一种由大环化合物,穴状配体,冠状物,podands,巯基化合物和离子载体组成的组中的化合物。 包含根据本发明的取向层的LCD特别是通过良好的对比度和光透射值以及通过液晶的良好对准来区分。

    Smectic liquid-crystal mixture
    8.
    发明授权
    Smectic liquid-crystal mixture 失效
    近晶液晶混合物

    公开(公告)号:US5529718A

    公开(公告)日:1996-06-25

    申请号:US278059

    申请日:1994-07-20

    摘要: A smectic liquid-crystal mixture containing rod-shaped molecules having only one side chain and certain phenylpyrimidine derivatives. The liquid-crystal mixtures according to the invention are distinguished by a low melting point and a high S.sub.C /S.sub.A phase-transition temperature. The use of bisesters of the formula I allows the number of phenylpyrimidine derivatives in the mixtures according to the invention to be significantly reduced. Ferroelectric mixtures according to the invention have, in particular, high contrast, good alignment, a large margin, low flicker and a large angle in the chevron geometry.

    摘要翻译: 含有仅具有一个侧链的棒状分子和某些苯基嘧啶衍生物的近晶液晶混合物。 根据本发明的液晶混合物的特征在于低熔点和高SC / SA相转变温度。 式I的双酚A的使用使得根据本发明的混合物中苯基嘧啶衍生物的数量显着降低。 根据本发明的铁电混合物尤其具有高对比度,良好的对准,大的边缘,低闪烁和大的角度的人字形几何形状。

    3,4,5-trifluorobenzenes, and their use in liquid-crystal mixtures
    9.
    发明授权
    3,4,5-trifluorobenzenes, and their use in liquid-crystal mixtures 失效
    3,4,5-三氟苯,以及它们在液晶混合物中的应用

    公开(公告)号:US5716543A

    公开(公告)日:1998-02-10

    申请号:US624490

    申请日:1996-04-04

    摘要: A 3,4,5-trifluorobenzene derivatives of formula (I): ##STR1## in which R.sup.1 is a straight-chain or branched alkyl having 1 to 15 carbon atoms in which one or two nonadjacent --CH.sub.2 --groups are optionally replaced by --O--, --CH.dbd.CH--, --C.tbd.C--, cyclopropane-1,2-diyl or --Si(CH.sub.3).sub.2 --, and in which one or more H atoms in the alkyl radical may be substituted by F; A.sup.1, A.sup.2 and A.sup.3 are identical or different 1,4-phenylene, pyridine-2,5-diyl, pyrimidine-2,5-diyl in which one or two H atoms are, optionally, replaced by F, trans-1,4-cyclohexylene, 1,3-dioxane-2,5-diyl or naphthalene-2,6-diyl, M.sup.1 and M.sup.2 are identical or different --CH.sub.2 CH.sub.2 --,--CH.dbd.CH--,--C.tbd.C--,--CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 --, --CH.sub.2 --O--,--O--CH.sub.2 --,--CO--O-- or--O--CO; X is --CH.sub.2 --O--,--OCH.sub.2 -- or --O--CO--; and k, l, m, n, o and p are zero or one provided that the sum k+m+o is greater than zero. The substances of the invention are characterized by a good temperature behavior of the nematic phase and good solubility.

    摘要翻译: PCT No.PCT / EP94 / 03212 Sec。 371日期:1996年4月4日 102(e)日期1996年4月4日PCT 1994年9月26日PCT公布。 WO95 / 10498 PCT出版物 日期:1995年04月20日一种式(I)的3,4,5-三氟苯衍生物:其中R 1是具有1至15个碳原子的直链或支链烷基,其中一个或两个不相邻 - CH 2 - 基团任选地被-O - , - CH = CH - , - C 3BOND C - ,环丙烷-1,2-二基或-Si(CH 3)2 - 取代,其中烷基中的一个或多个H原子 基团可以被F取代; A1,A2和A3是相同或不同的1,4-亚苯基,吡啶-2,5-二基,嘧啶-2,5-二基,其中一个或两个H原子任选被F,反式-1,4 环己基,1,3-二恶烷-2,5-二基或萘-2,6-二基,M1和M2相同或不同,-CH2CH2 - , - CH = CH - , - C 3BOND C - , - CH2CH2CH2CH2-, -CH 2 -O - , - O-CH 2 - , - CO-O-或-O-CO; X是-CH 2 -O - , - OCH 2 - 或-O-CO-; 并且k,l,m,n,o和p分别为0或1,条件是和k + m + o大于零。 本发明的物质的特征在于向列相的温度特性良好,溶解性好。

    2-Aryloxytetrafluoropropionic esters, process for their preparation, and
their use in liquid-crystalline mixtures
    10.
    发明授权
    2-Aryloxytetrafluoropropionic esters, process for their preparation, and their use in liquid-crystalline mixtures 失效
    2-芳氧基四氟丙酸酯,其制备方法及其在液晶混合物中的应用

    公开(公告)号:US5547605A

    公开(公告)日:1996-08-20

    申请号:US354666

    申请日:1994-12-13

    摘要: The use of a compound of the formula I, in liquid crystal mixtures,R.sup.1 (--A.sup.1).sub.a (--M.sup.1).sub.b (--A.sup.2)--O--CF(CF.sub.3)--COO--(--A.sup.3)(--M.sup.2).sub.c (--A.sup.4).sub.d --R.sup.2 Iin which the symbols and indices have the following meanings:R.sup.1 and R.sup.2 are identical or different and are hydrogen, a straight-chain or branched alkyl radical having 1 to 20 carbon atoms (with or without asymmetrical carbon atoms), where one or more --CH.sub.2 -- groups may also be replaced by --O--, --CO--, cyclopropane-1,2-diyl, --Si(CH.sub.3).sub.2 --, with the proviso that oxygen atoms must not be bonded directly to one another, and/or one or more H atoms of the alkyl radical may be substituted by --F; M.sup.1 and M.sup.2 are identical or different and are --CO--O--, --O--CO--, or a single bond;A.sup.1, A.sup.2, A.sup.3 and A.sup.4 are identical or different and are 1,4-phenylene, in which one or more H atoms may be replaced by F, pyrazine-2,5-diyl, in which one or two H atoms may be replaced by F, pyridazine-3,6-diyl, in which one or two H atoms may be replaced by F, pyridine-2,5-diyl, in which one or more H atoms may be replaced by F, pyrimidine-2,5-diyl, in which one or two H atoms may be replaced by F, trans-1,4-cyclohexylene, 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, in which one H atom may be replaced by F, 1,3-thiazole-2,5-diyl, in which one H atom may be replaced by F, thiophene-2,4-diyl, in which one H atom may be replaced by F, thiophene-2,5-diyl, in which one or two H atoms may be replaced by F, naphthalene-2,6-diyl, in which one or more H atoms may be replaced by F;a, b, c and d are zero or one.

    摘要翻译: 在液晶混合物中,R1(-A1)a(-M1)b(-A2)-O-CF(CF3)-COO - ( - A3)( - M2)c( -A4)d-R2,其中符号和指数具有以下含义:R 1和R 2相同或不同,为氢,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) 其中一个或多个-CH 2 - 基团也可以被-O - , - CO-,环丙烷-1,2-二基,-Si(CH 3)2 - 取代,条件是氧原子不能直接键合到 和/或烷基的一个或多个H原子可以被-F取代; M1和M2相同或不同,为-CO-O-,-O-CO-或单键; A1,A2,A3和A4是相同或不同的,是1,4-亚苯基,其中一个或多个H原子可以被F,吡嗪-2,5-二基代替,其中一个或两个H原子可以被替换 由F,哒嗪-3,6-二基,其中一个或两个H原子可以被F取代,吡啶-2,5-二基,其中一个或多个H原子可被F取代,嘧啶-2,5 - 二基,其中一个或两个H原子可以被F,反式-1,4-亚环己基,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,其中一个H原子可被F取代,1,3-噻唑-2,5-二基,其中一个 H原子可以被F,噻吩-2,4-二基代替,其中一个H原子可以被F,噻吩-2,5-二基代替,其中一个或两个H原子可以被F,萘 - 2,6-二基,其中一个或多个H原子可以被F取代; a,b,c和d为零或一。