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71. 发明授权

US07081279B2 Alkenyl compound having a negative Δε value, liquid crystal composition, and liquid crystal display device 有权
标题翻译：具有负Δepin值的烯基化合物，液晶组合物和液晶显示装置
公开(公告)号：US07081279B2
公开(公告)日：2006-07-25
申请号：US10650765
申请日：2003-08-29
申请人： Takashi Kato , Tomoyuki Kondo , Henry Bernhardt , Shuichi Matsui , Hiroyuki Takeuchi , Yasuhiro Kubo , Fusayuki Takeshita , Etsuo Nakagawa
发明人： Takashi Kato , Tomoyuki Kondo , Henry Bernhardt , Shuichi Matsui , Hiroyuki Takeuchi , Yasuhiro Kubo , Fusayuki Takeshita , Etsuo Nakagawa
IPC分类号： C09K19/34 , C09K19/30 , C09K19/32 , C09K19/12 , C07C43/225
CPC分类号： C09K19/3491 , C07C17/2635 , C07C25/18 , C07C25/24 , C07C45/515 , C07C45/60 , C07F7/0896 , C09K19/0403 , C09K19/12 , C09K19/3001 , C09K19/3003 , C09K19/3402 , C09K19/3444 , C09K19/3458 , C09K19/406 , C09K19/42 , C09K2019/0407 , C09K2019/0444 , C09K2019/3027 , C09K2019/3422 , Y10T428/10 , C07C49/753 , C07C47/277
摘要： Liquid crystalline compounds having a large negative Δε low viscosity, a large K33/K11 value, a small Δε/Δ⊥ and mutually excellent solubility even at low temperature, compositions containing at least one of the compounds and liquid crystal display devices containing such a liquid crystal compositions are disclosed.
摘要翻译：具有较大的负值Deltaepsilon低粘度，较大的K 33 / K 11值的小晶体化合物，即使在低温下也具有相当优异的溶解度，组成含有至少一种化合物和含有这种液晶组合物的液晶显示装置。

72. 发明授权

US06692657B1 Alkenyl compound having a negative &Dgr;&egr; value, liquid crystal composition, and liquid crystal display device 有权
标题翻译：具有负Δepin值的烯基化合物，液晶组合物和液晶显示装置
公开(公告)号：US06692657B1
公开(公告)日：2004-02-17
申请号：US09323820
申请日：1999-06-02
申请人： Takashi Kato , Tomoyuki Kondo , Henry Bernhardt , Shuichi Matsui , Hiroyuki Takeuchi , Yasuhiro Kubo , Fusayuki Takeshita , Etsuo Nakagawa
发明人： Takashi Kato , Tomoyuki Kondo , Henry Bernhardt , Shuichi Matsui , Hiroyuki Takeuchi , Yasuhiro Kubo , Fusayuki Takeshita , Etsuo Nakagawa
IPC分类号： C09K1934
CPC分类号： C09K19/3491 , C07C17/2635 , C07C25/18 , C07C25/24 , C07C45/515 , C07C45/60 , C07F7/0896 , C09K19/0403 , C09K19/12 , C09K19/3001 , C09K19/3003 , C09K19/3402 , C09K19/3444 , C09K19/3458 , C09K19/406 , C09K19/42 , C09K2019/0407 , C09K2019/0444 , C09K2019/3027 , C09K2019/3422 , Y10T428/10 , C07C49/753 , C07C47/277
摘要： Liquid crystalline compounds having a large negative &Dgr;∈ low viscosity, a large K33/K11 value, a small &Dgr;∈/&Dgr;⊥ and mutually excellent solubility even at low temperature, compositions containing at least one of the compounds and liquid crystal display devices containing such a liquid crystal compositions are disclosed.
摘要翻译：具有大的负ΔΔε低粘度，大的K33 / K11值，小的Δε/Δ⊥和即使在低温也相互优异的溶解性的液晶化合物，含有至少一种化合物和含有这些化合物的液晶显示装置公开了一种液晶组合物。

73. 发明授权

US06864397B2 Difluoromethyl ether derivative and process for producing the same 有权
标题翻译：二氟甲基醚衍生物及其制备方法
公开(公告)号：US06864397B2
公开(公告)日：2005-03-08
申请号：US10463616
申请日：2003-06-18
申请人： Tomoyuki Kondo , Kouki Sagou , Shuichi Matsui , Hiroyuki Takeuchi , Yasuhiro Kubo , Etsuo Nakagawa
发明人： Tomoyuki Kondo , Kouki Sagou , Shuichi Matsui , Hiroyuki Takeuchi , Yasuhiro Kubo , Etsuo Nakagawa
IPC分类号： G02F1/13 , C07B61/00 , C07C41/20 , C07C43/225 , C07C253/30 , C07C255/54 , C07D239/26 , C07D239/34 , C07D309/06 , C07D319/06 , C07D335/02 , C07D339/08 , C09K19/12 , C09K19/14 , C09K19/20 , C09K19/30 , C09K19/34 , C09K19/42 , C07C41/06
CPC分类号： C09K19/3066 , C09K19/20 , C09K19/3402 , C09K19/3458 , C09K19/3469 , C09K19/3491 , C09K19/42 , C09K2019/0466 , C09K2019/3422 , Y10T428/10
摘要： The present invention provides a process for producing a difluoromethyl ether derivative simple and efficient process for producing the difluoromethyl ether derivative represented by Formula (1d′) or a difluoromethyl ether derivative represented by Formula (1c′): wherein all the variables are defined in the specification.
摘要翻译：本发明提供一种制备二氟甲基醚衍生物的方法，其简单而有效的制备由式（1d'）表示的二氟甲基醚衍生物或由式（1c'）表示的二氟甲基醚衍生物：其中所有变量定义在规范。

74. 发明授权

US06827876B2 Difluoromethyl ether derivative and process for producing the same 有权
标题翻译：二氟甲基醚衍生物及其制备方法
公开(公告)号：US06827876B2
公开(公告)日：2004-12-07
申请号：US10463598
申请日：2003-06-18
申请人： Tomoyuki Kondo , Kouki Sagou , Shuichi Matsui , Hiroyuki Takeuchi , Yasuhiro Kubo , Etsuo Nakagawa
发明人： Tomoyuki Kondo , Kouki Sagou , Shuichi Matsui , Hiroyuki Takeuchi , Yasuhiro Kubo , Etsuo Nakagawa
IPC分类号： C09K1906
CPC分类号： C09K19/3066 , C09K19/20 , C09K19/3402 , C09K19/3458 , C09K19/3469 , C09K19/3491 , C09K19/42 , C09K2019/0466 , C09K2019/3422 , Y10T428/10
摘要： A liquid crystalline compound represented by Formula (1c′): wherein R1 and R2, rings A1, A2, A3, A4 and A5, Z1, Z2, Z3 and Z4, Y1, Y2, Y3 and Y4, and k, l, m and n are as defined in the specification. Also provided is a liquid crystal composition containing at least one of these liquid crystalline compounds.
摘要翻译：由式（1c'）表示的液晶化合物：其中R 1和R 2分别为环A 1，A 2，A 3，A 4和A 5，Z Z 1，Z 2，Z 3和Z 4，Y 1，Y 2，Y 3和Y 4，k，l，m和n如上所定义在规范中。还提供含有这些液晶化合物中的至少一种的液晶组合物。

75. 发明授权

US06605747B2 Difluoromethyl ether derivative and process for producing the same 有权
标题翻译：二氟甲基醚衍生物及其制备方法
公开(公告)号：US06605747B2
公开(公告)日：2003-08-12
申请号：US09925608
申请日：2001-08-10
申请人： Tomoyuki Kondo , Kouki Sagou , Shuichi Matsui , Hiroyuki Takeuchi , Yasuhiro Kubo , Etsuo Nakagawa
发明人： Tomoyuki Kondo , Kouki Sagou , Shuichi Matsui , Hiroyuki Takeuchi , Yasuhiro Kubo , Etsuo Nakagawa
IPC分类号： C07C4106
CPC分类号： C09K19/3066 , C09K19/20 , C09K19/3402 , C09K19/3458 , C09K19/3469 , C09K19/3491 , C09K19/42 , C09K2019/0466 , C09K2019/3422 , Y10T428/10
摘要： The present invention provides a difluoromethyl ether derivative which shows various suitable physical properties as a liquid crystal compound, a liquid crystal composition comprising the compound and a liquid crystal display element containing the composition, and also provides a simple and efficient process for producing the difluoromethyl ether derivative. According to the present invention, a process for producing a difluoromethyl ether derivative represented by Formula (1d): wherein the variables are defined in the specification, is characterized by using an &agr;&agr;-difluorocyclohexylidene derivative represented by Formula (1a): wherein R1, rings A1 and A2, Z1, Z2, k and l have the same meanings as defined in the specification, as a starting material.
摘要翻译：本发明提供一种二氟甲基醚衍生物，其显示出作为液晶化合物的各种合适的物理性质，包含该化合物的液晶组合物和含有该组合物的液晶显示元件，并且还提供了制备二氟甲基醚的简单有效的方法衍生物。根据本发明，由式（1d）表示的二氟甲基醚衍生物的制造方法，其特征在于，使用由式（1a）表示的αα-二氟亚环己基衍生物：其中，R1， A1和A2，Z1，Z2，k和l具有与说明书中定义的相同的含义作为起始材料。

76. 发明授权

US5993690A Organosilicon compound, liquid crystal composition, and liquid-crystal display element 失效
标题翻译：有机硅化合物，液晶组合物和液晶显示元件
公开(公告)号：US5993690A
公开(公告)日：1999-11-30
申请号：US000409
申请日：1998-01-26
申请人： Tomoyuki Kondo , Shuichi Matsui , Norihisa Hachiya , Etsuo Nakagawa
发明人： Tomoyuki Kondo , Shuichi Matsui , Norihisa Hachiya , Etsuo Nakagawa
IPC分类号： C07F7/08 , C09K19/40 , C09K19/42 , C09K19/54 , C07F7/04 , C09K19/52
CPC分类号： C07F7/0896 , C09K19/40 , C09K19/406 , C09K19/42
摘要： An object of the present invention is to provide organosilicon compounds having an excellent miscibility with other liquid crystal materials, low viscosity, and improved threshold voltage; to provide liquid crystal compositions comprising the organosilicon compound; and to provide liquid crystal display devices comprising the liquid crystal composition. The organosilicon compounds are expressed by the general formula (1)Ra--A.paren open-st.Z.sub.1 --A.sub.1 .paren close-st..sub.m .paren open-st.Z.sub.2 --A.sub.2 .paren close-st..sub.n .paren open-st.Z.sub.3 --A.sub.3 .paren close-st..sub.o Rb (1)wherein at least one of Ra, Rb, Z.sub.1, Z.sub.2, and Z.sub.3 has --SiH.sub.2 --; Ra represents hydrogen atom or an alkyl group having 1 to 20 carbon atoms; at least one --CH.sub.2 -- in the alkyl group may be replaced by --SiH.sub.2 --, --O--, --S--, --CO--, --CH.dbd.CH--, --C.tbd.C--, or 1,3 -cyclobutylene; Rb represents a group selected from Ra, a halogen atom, or CN; each of A, A.sub.1, A.sub.2, and A.sub.3 represents a divalent cyclic group; Z.sub.1, Z.sub.2 and Z.sub.3 independently represent a covalent bond or --(CH.sub.2).sub.p --; at least one --CH.sub.2 -- in the --(CH.sub.2).sub.p -- may be replaced by --SiH.sub.2 --, --O--, --S--, --CO--, --CH.dbd.CH--, or --C.tbd.C--; p is an integer of 1 to 4; and m, n, and o are independently 0 or 1.
摘要翻译： PCT No.PCT / JP96 / 02103 Sec。 371日期1998年1月26日 102（e）1998年1月26日PCT PCT 1996年7月26日PCT公布。公开号WO97 / 05144 日期1997年2月13日本发明的目的是提供与其它液晶材料混合性优异的有机硅化合物，粘度低，阈值电压提高; 提供包含有机硅化合物的液晶组合物; 并提供包括液晶组合物的液晶显示装置。有机硅化合物由通式（1）表示：Ra-A + 545 Z1-A1 + 546m + 545Z2-A2 + 546n + 545Z3-A3 + 546 oRb（1）其中Ra，Rb中的至少一个，Z1，Z2和Z3具有-SiH2-; Ra表示氢原子或碳原子数1〜20的烷基。烷基中的至少一个-CH 2可以被-SiH 2 - ， - O - ， - S - ， - CO - ， - CH = CH - ， - C 3 CF 3 - 或1,3-亚环丁基代替; Rb表示选自Ra，卤素原子或CN的基团; A，A1，A2和A3各自表示二价环状基团; Z 1，Z 2和Z 3独立地表示共价键或 - （CH 2）p - ; - （CH 2）p - 中的至少一个-CH 2可以被-SiH 2 - ， - O - ， - S - ， - CO - ， - CH = CH-或-C p为1〜4的整数，且m，n和o独立地为0或1。

77. 发明授权

US06348244B1 Liquid-crystal compounds having large negative value of permittivity anisotropy, liquid-crystal composition, and liquid-crystal display element 有权
标题翻译：具有大的介电常数各向异性负值的液晶化合物，液晶组合物和液晶显示元件
公开(公告)号：US06348244B1
公开(公告)日：2002-02-19
申请号：US09529989
申请日：2000-04-24
申请人： Kazutoshi Miyazawa , Hiroyuki Takeuchi , Yasuhiro Kubo , Fusayuki Takeshita , Etsuo Nakagawa
发明人： Kazutoshi Miyazawa , Hiroyuki Takeuchi , Yasuhiro Kubo , Fusayuki Takeshita , Etsuo Nakagawa
IPC分类号： C09K1934
CPC分类号： C07D239/26 , C07C25/18 , C07C43/225 , C07C2601/14 , C07D309/06 , C07D319/06 , C09K19/0403 , C09K19/3001 , C09K19/3003 , C09K19/3028 , C09K19/3402 , C09K19/42 , C09K19/44 , C09K19/46 , C09K2019/0448 , C09K2019/0451 , C09K2019/3422 , Y10T428/10
摘要： An object of the present invention is to provide novel liquid crystalline compounds having a negative and extremely large dielectric anisotropy value and a small optical anisotropy value together, to provide liquid crystal compositions comprising the liquid crystalline compound, and to provide liquid crystal display devices fabricated by using the liquid crystal composition; the liquid crystalline compounds have 2,3-difluorophenyl moiety and are expressed by the general formula (1) wherein Ra and Rb each independently represent a straight chain or branched alkyl group having 1 to 10 carbon atoms in which group any methylene group may be replaced by —O—, —CH═CH—, or —C≡C—, but there is not a case wherein —O— continues; ring A1 represents cyclohexane-1,4-diyl not adjacent any methylene group may be replaced by —O—; ring A2 represents 2,3-difluoro-1,4-phenylene in which phenylene hydrogen atoms at 5-position and 6-position may each independently be replaced by fluorine atoms; Z1 and Z2 each independently represent single bond or —CH2CH2—; Xa, Xb, Xc, and Xd each independently represent hydrogen atom, fluorine atom, or chlorine atom, but at least one of Xa, Xb, Xc, and Xd is fluorine atom or chlorine atom and any atom which constitutes the compound may be replaced by its isotope.
摘要翻译：本发明的目的是提供一种具有负极大且非常大的介电各向异性值和小的光学各向异性值的新的液晶化合物，以提供包括液晶化合物的液晶组合物，并提供由使用液晶组合物; 液晶化合物具有2,3-二氟苯基部分，并且由通式（1）表示，其中Ra和Rb各自独立地表示具有1-10个碳原子的直链或支链烷基，其中任何亚甲基可以被取代通过-O-，-CH = CH-或-C = C-，但不存在-O-继续的情况; 环A1表示不相邻的环己烷-1,4-二基，任何亚甲基都可以被-O-取代; 环A2表示其中5-位和6-位上的亚苯基氢原子各自独立地被氟原子代替的2,3-二氟-1,4-亚苯基; Z 1和Z 2各自独立地表示单键或-CH 2 CH 2 - ; Xa，Xb，Xc和Xd各自独立地表示氢原子，氟原子或氯原子，但Xa，Xb，Xc和Xd中的至少一个为氟原子或氯原子，构成该化合物的任何原子均可被取代通过其同位素。

78. 发明授权

US6015508A Liquid crystalline compounds containing hydrocarbon groups, liquid crystalline compositions, and liquid crystal display elements 失效
公开(公告)号：US6015508A
公开(公告)日：2000-01-18
申请号：US30835
申请日：1998-02-26
申请人： Noriyuki Ohnishi , Hiroyuki Takeuchi , Kazutoshi Miyazawa , Norihisa Hachiya , Etsuo Nakagawa
发明人： Noriyuki Ohnishi , Hiroyuki Takeuchi , Kazutoshi Miyazawa , Norihisa Hachiya , Etsuo Nakagawa
IPC分类号： G02F1/13 , C07C13/19 , C07C13/20 , C07C13/28 , C07C15/48 , C07C15/50 , C07C15/52 , C07C15/54 , C07C17/16 , C07C17/26 , C07C22/00 , C07C22/02 , C07C22/04 , C07C22/08 , C07C23/10 , C07C23/18 , C07C25/24 , C07C43/162 , C07C43/188 , C07C43/205 , C07C43/215 , C07C43/225 , C07C45/44 , C07C255/46 , C07C255/50 , C07C255/54 , C07C255/55 , C07D213/06 , C07D213/26 , C07D213/57 , C07D213/61 , C07D239/26 , C07D239/34 , C07D319/06 , C09K19/04 , C09K19/12 , C09K19/30 , C09K19/34 , C09K19/42 , C09K19/44 , C09K19/46 , C07C15/12
CPC分类号： C07D239/26 , C07C13/28 , C07C17/16 , C07C17/2635 , C07C22/02 , C07C22/08 , C07C25/24 , C07C255/46 , C07C255/50 , C07C255/54 , C07C255/55 , C07C43/162 , C07C43/188 , C07C43/205 , C07C43/225 , C07C45/44 , C07D213/06 , C07D213/61 , C07D239/34 , C07D319/06 , C09K19/04 , C09K19/3001 , C09K19/3003 , C09K19/3059 , C09K19/42 , C09K19/44 , C09K19/46 , C07C2101/14 , C07C2101/16 , C09K2019/0448 , C09K2019/0451
摘要： Disclosed are (A) a liquid crystalline compound of the general formula: ##STR1## wherein X.sub.1 stands for a hydrogen atom, cyano group, a halogen atom, or an alkyl group with 1-20 carbon atoms, and one or more methylene groups in the alkyl group may be replaced by --CH.dbd.CH--, --.tbd.C--, or oxygen atoms and one or more hydrogen atoms may be substituted by halogen atoms; X.sub.2 stands for a hydrogen atom, an alkyl group with 1-10 carbon atoms, or a substituent of --(A.sub.4 --Z.sub.4).sub.s --A.sub.6 --X.sub.3 ; l, m, n and s each stands for an integer of 0 or 1, and p, and q each stands for an integer of 0-5; X.sub.3 for an alkyl group with 1-10 carbon atoms; Z.sub.1 -Z.sub.4 each independently stands for a covalent bond or an alkylene group with 1-5 carbon atoms, and one or more methylene groups in the alkylene group may be replaced by --CH.dbd.CH--, --C.tbd.C--, or an oxygen atom and one or more hydrogen atoms i the alkylene group may be substituted by halogen atoms; the ring A.sub.1 -A.sub.6 each independently stands for a 1,4-phenylene, a 1,4-cyclohexenylene, or a trans-1,4-cyclohexylene, and the carbon atoms in the ring may be replaced by nitrogen atoms or oxygen atoms and the hydrogen atoms in the ring may be substituted by halogen atoms or cyano groups; and B.sub.1 and B.sub.2 each independently stands for --CH.dbd.CH-- or --C.tbd.C--, with the proviso that both of B.sub.1 and B.sub.2 should not be --CH.dbd.CH-- at the same time, (B) a liquid crys-line composition comprising at least one liquid crystalline compound of the general formula (1), and (C) a liquid crystal display element wherein the composition (B) is used. The liquid crystalline compounds of the present invention are distinguished by their characteristics of steep threshold voltage, an adequate magnitude of values in optical or dielectric anisotropy, an extremely high ratio of elastic constants and low viscosity in addition to good compatibility with other liquid crystalline compounds.

79. 发明授权

US06599590B2 Fluoro-substituted alkenyl compounds, liquid crystal compositions, and liquid crystal display elements 失效
标题翻译：氟取代的烯基化合物，液晶组合物和液晶显示元件
公开(公告)号：US06599590B2
公开(公告)日：2003-07-29
申请号：US09861554
申请日：2001-05-22
申请人： Yasuhiro Haseba , Shuichi Matsui , Hiroyuki Takeuchi , Yasuhiro Kubo , Etsuo Nakagawa
发明人： Yasuhiro Haseba , Shuichi Matsui , Hiroyuki Takeuchi , Yasuhiro Kubo , Etsuo Nakagawa
IPC分类号： C09K1930
CPC分类号： C09K19/42 , C07C255/50 , C07C2601/14 , C07D319/06 , C09K19/0403 , C09K19/12 , C09K19/2014 , C09K19/3003 , C09K19/3402 , C09K19/44 , C09K19/46 , C09K2019/0444 , C09K2019/0448 , C09K2019/0451 , C09K2019/3422 , Y10T428/10
摘要： The invention relates to a fluoro-substituted alkenyl compound represented by formula (1) wherein Y1, Y2, Y3 and Y4 are each independently H or F, provided that at least one of Y1 and Y2 is F; Q1 is a single bond or an alkylene group of 1-20 carbon atoms, at least one —CH2— being optionally substituted by —O—, provided that two or more —O— are not adjacent to each other; Q2 is a single bond or —C≡C—; Rings A1, A2 and A3 are each independently a cyclohexane ring, a dioxane ring, a cyclohexene ring, a pyrimidine ring, a pyridine ring, or a benzene ring, or a benzene ring having at least one hydrogen atom substituted by F; Z1, Z2 and Z3 are each independently a single bond, —CH2CH2—, —CH2O—, —OCH2—, —COO—, —OCO—, —CH═CH—, —C≡C—, —CF2O—, or —OCF2; and m and n are each independently 0 or 1; provided that Y3 is F when Ring A3 is a cyclohexane ring and Z3 is a single bond. The liquid crystal composition comprising the compound, when used in liquid crystal display elements for various modes, excels in driving voltage and contrast.
摘要翻译：本发明涉及由式（1）表示的氟取代烯基化合物，其中Y 1，Y 2，Y 3和Y 4各自独立地为H或F，条件是Y 1和Y 2中的至少一个为F; Q1是单键或1-20个碳原子的亚烷基，至少一个-CH2-任选被-O-取代，条件是两个或更多个-O-彼此不相邻; Q2是单键或-C = C-; 环A1，A2和A3各自独立地为环己烷环，二恶烷环，环己烯环，嘧啶环，吡啶环或苯环，或具有至少一个被F取代的氢原子的苯环; Z 1，Z 2和Z 3各自独立地为单键，-CH 2 CH 2 - ， - CH 2 O - ， - OCH 2 - ， - COO - ， - OCO-， - CH = CH - ， - C≡C-，-CF 2 O- OCF2; m和n各自独立地为0或1; 条件是当环A3为环己烷环且Z 3为单键时，Y 3为F。当用于各种模式的液晶显示元件时，包含该化合物的液晶组合物在驱动电压和对比度方面优异。

80. 发明授权

US06548126B1 2,3-difluorophenyl derivative having negative dielectric anisotropy, liquid crystal composition, and liquid crystal display device 失效
标题翻译：具有负介电各向异性的2,3-二氟苯基衍生物，液晶组合物和液晶显示装置
公开(公告)号：US06548126B1
公开(公告)日：2003-04-15
申请号：US09635846
申请日：2000-08-11
申请人： Yasuyuki Sasada , Shuichi Matsui , Hiroyuki Takeuchi , Yasuhiro Kubo , Etsuo Nakagawa
发明人： Yasuyuki Sasada , Shuichi Matsui , Hiroyuki Takeuchi , Yasuhiro Kubo , Etsuo Nakagawa
IPC分类号： C09K1930
CPC分类号： C09K19/3001 , C09K19/04 , C09K19/30 , C09K19/3066 , C09K19/3098 , C09K19/42 , C09K19/44 , C09K19/46 , C09K2019/0448 , C09K2019/0451 , C09K2019/3027 , Y10T428/10
摘要： The invention is to provide liquid crystalline compounds having a negative and extremely large dielectric anisotropy value and a small optical anisotropy value at the same time; liquid crystal compositions comprising the compound; and liquid crystal display devices fabricated by using the liquid crystal composition; the liquid crystalline compounds have 2,3-dihalogenophenylene moiety and are expressed by formula (1) wherein Ra and Rb each independently represents a linear or branched alkyl having 1 to 10 carbon, any methylene in the alkyl may be replaced by —O—, —S—, —CH═CH—, or —C≡C—, but —O— is not successive, and any hydrogen in the alkyl may be replaced by halogen; rings A1 to A4 each independently represents trans-1,4-cyclohexylene, cyclohexene-1,4-diyl, pyridine-1,4-diyl, pyrimidine-2,5-diyl, or 1,4-phenylene, wherein at least one hydrogen in these rings may be replaced by halogen, and any nonadjacent methylene in cyclohexane ring may be replaced by —O—; Y1 and Y2 each independently represents F or Cl; Z1, Z2 and Z3 each independently represents a single bond, —CH2CH2—, —(CH2)4—, —COO—, —OCO—, —CH2O—, —OCH2—, —CF2O—, or —OCF2—; and l, m and n each independently is 0, 1 or 2, and the sum of l+m+n is 3 and less.
摘要翻译：本发明提供同时具有负的和非常大的介电各向异性值和小的光学各向异性值的液晶化合物; 包含该化合物的液晶组合物; 以及使用液晶组合物制造的液晶显示装置; 液晶化合物具有2,3-二卤代亚苯基部分，并且由式（1）表示，其中R a和R b各自独立地表示具有1至10个碳的直链或支链烷基，烷基中的任何亚甲基可以被-O-， -S-，-CH = CH-或-C = C-，但-O-不是连续的，并且烷基中的任何氢可被卤素取代; 环A1至A4各自独立地表示反式-1,4-亚环己基，环己烯-1,4-二基，吡啶-1,4-二基，嘧啶-2,5-二基或1,4-亚苯基，其中至少一个这些环中的氢可以被卤素取代，环己烷环中的任何不相邻的亚甲基都可以被-O-取代; Y1和Y2各自独立地表示F或Cl; Z 1，Z 2和Z 3各自独立地表示单键，-CH 2 CH 2 - ， - （CH 2）4 - ， - COO - ， - OCO - ， - CH 2 O - ， - OCH 2 - ， - CF 2 O-或-OCF 2 - l，m和n各自独立地为0,1或2，并且l + m + n的和为3以下。

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