摘要:
A liquid crystalline compound expressed by the general formula (1) ##STR1## (wherein R.sub.1 is an alkyl group having 1 to 12 carbon atoms and one CH.sub.2 group in the alkyl group may be replaced by oxygen atom or --CH.dbd.CH--; X represents hydrogen atom or fluorine atom; Y represents hydrogen atom or alkoxy group having 1 to 5 carbon atoms; l and m independently represent 0 or 1, respectively; and n and p independently represent an integer of 0 to 10, respectively, and when p is 0, n is 1 or more, and when Y is an alkoxy group, X is a fluorine atom and p is 0.) Liquid crystal compositions which are suitable for use in liquid crystal display devices, have a high clearing point, and have a function of decreasing viscosity, and novel liquid crystalline compounds useful as a component of the liquid crystal compositions are provided.
摘要:
A novel compound having superior characteristics as a liquid crystal material and having a good stability under usual use environment, and a composition having improved viscosity, optical anisotropy and other properties, and further a liquid crystal display element are provided,the compound being a hexenediyne compound expressed by the formula ##STR1## wherein R and R' each represent an alkyl group or an alkoxy group, independently of each other; rings A and B each represent 1,4-cyclohexylene or 1,4-phenylene; and X represents H or F), and particularly when fluorine atom is introduced into the central part of the molecule of the compound, the viscosity is notably lowered; and when a liquid crystal composition is composed of the compound as its component, the operation temperature range of the liquid crystal composition is broadened, and the high speed response becomes possible due to the viscosity reduction, and when the cell thickness is reduced, a good display can be realized.
摘要:
A novel liquid crystalline compound having a high elastic constant ratio (K.sub.33 /K.sub.11) and an improved solubility thereof in other liquid crystal materials, at low temperatures, and a liquid crystal composition containing the same are provided. The liquid crystalline compound is expressed by the formula (1): ##STR1## wherein Q represents CF.sub.3, CF.sub.2 H or CFH.sub.2 ; A.sub.1, A.sub.2 and A.sub.3 each independently represent trans-1,4-cyclohexylene group, 1,4-phenylene group, wherein one or more hydrogen atoms on its six-membered ring may be replaced by F, Cl or CN, pyridine-2,5-diyl group or 1,3-pyrimidine-2,5-diyl; ring B represents 1,4-phenylene group or trans-1,4-cyclohexylene group; Z.sub.1, Z.sub.2 and Z.sub.3 each independently represent covalent bond, --C.dbd.C--, --C.tbd.C--, --OCO--, --COO--, --CH.sub.2 O--, --OCH.sub.2 --, --(CH.sub.2).sub.2 -- or --(CH.sub.2).sub.4 --; l and m each independently represent an integer of 0 to 5; o and p each independently represent 0 or 1; L.sub.1 and L.sub.2 each independently represent H, F or Cl; L.sub.3 represents halogen atom, CN, CF.sub.3, CF.sub.2 H, CFH.sub.2, OCF.sub.3, OCF.sub.2 H, H or an alkyl group of 1 to 10 carbon atoms or an alkenyl group of 2 to 10 carbon atoms wherein optional methylene groups (--CH.sub.2 --) in the alkyl group or the alkenyl group each independently may be replaced by --O--, --S--, --CO--, --OCO-- or --COO--, but two or more methylene groups should not be continuedly replaced.
摘要翻译:提供了一种在低温下具有高弹性常数比(K33 / K11)和改善其在其它液晶材料中的溶解度的新型液晶化合物和含有该液晶组合物的液晶组合物。 液晶化合物由式(1)表示:其中Q表示CF 3,CF 2 H或CFH 2; A1,A2和A3各自独立地表示反式-1,4-亚环己基,1,4-亚苯基,其六元环上的一个或多个氢原子可被F,Cl或CN取代,吡啶-2, 5-二基或1,3-嘧啶-2,5-二基; 环B表示1,4-亚苯基或反式-1,4-亚环己基; Z 1,Z 2和Z 3各自独立地表示共价键,-C = C - , - C 3BOND C - , - OO - , - COO - , - CH 2 O - , - OCH 2 - , - (CH 2)2 - 或 - (CH 2) 4-; l和m各自独立地表示0〜5的整数, o和p各自独立地表示0或1; L1和L2各自独立地表示H,F或Cl; L 3表示卤素原子,CN,CF 3,CF 2 H,CFH 2,OCF 3,OCF 2 H,H或1-10个碳原子的烷基或2-10个碳原子的链烯基,其中烷基中任选的亚甲基(-CH 2 - ) 基团或烯基各自独立地可以被-O - , - S - , - CO-,-OCO-或-COO-取代,但是不应该连续更换两个或多个亚甲基。
摘要:
A novel liquid crystalline compound having a high elastic constant ratio (K.sub.33 /K.sub.11) and an improved solubility thereof in other liquid crystal materials, at low temperatures, and a liquid crystal composition containing the same are provided. The liquid crystalline compound is expressed by the formula (1): ##STR1## wherein Q represents CF.sub.3, CF.sub.2 H or CFH.sub.2 ; A.sub.1, A.sub.2 and A.sub.3 each independently represent trans-1,4-cyclohexylene group, 1,4-phenylene group, wherein one or more hydrogen atoms on its six-membered ring may be replaced by F, Cl or CN, pyridine-2,5-diyl group or 1,3-pyrimidine-2,5-diyl; ring B represents 1,4-phenylene group or trans-1,4-cyclohexylene group; Z.sub.1, Z.sub.2 and Z.sub.3 each independently represent covalent bond, --C.dbd.C--, --C.tbd.C--, --OCO--, --COO--, --CH.sub.2 O--, --OCH.sub.2 --, --(CH.sub.2).sub.2 -- or --(CH.sub.2).sub.4 --; l and m each independently represent an integer of 0 to 5; o and p each independently represent 0 or 1; L.sub.1 and L.sub.2 each independently represent H, F or Cl; L.sub.3 represents halogen atom, CN, CF.sub.3, CF.sub.2 H, CFH.sub.2, OCF.sub.3, OCF.sub.2 H, H or an alkyl group of 1 to 10 carbon atoms or an alkenyl group of 2 to 10 carbon atoms wherein optional methylene groups (--CH.sub.2 --) in the alkyl group or the alkenyl group each independently may be replaced by --O--, --S--, --CO--, --OCO-- or --COO--, but two or more methylene groups should not be continuedly replaced.
摘要翻译:提供了一种在低温下具有高弹性常数比(K33 / K11)和改善其在其它液晶材料中的溶解度的新型液晶化合物和含有该液晶组合物的液晶组合物。 液晶化合物由式(1)表示:其中Q表示CF 3,CF 2 H或CFH 2; A1,A2和A3各自独立地表示反式-1,4-亚环己基,1,4-亚苯基,其六元环上的一个或多个氢原子可被F,Cl或CN取代,吡啶-2, 5-二基或1,3-嘧啶-2,5-二基; 环B表示1,4-亚苯基或反式-1,4-亚环己基; Z 1,Z 2和Z 3各自独立地表示共价键,-C = C - , - C 3BOND C - , - OO - , - COO - , - CH 2 O - , - OCH 2 - , - (CH 2)2 - 或 - (CH 2) 4-; l和m各自独立地表示0〜5的整数, o和p各自独立地表示0或1; L1和L2各自独立地表示H,F或Cl; L 3表示卤素原子,CN,CF 3,CF 2 H,CFH 2,OCF 3,OCF 2 H,H或1-10个碳原子的烷基或2-10个碳原子的链烯基,其中烷基中任选的亚甲基(-CH 2 - ) 基团或烯基各自独立地可以被-O - , - S - , - CO-,-OCO-或-COO-取代,但是不应该连续更换两个或多个亚甲基。
摘要:
A liquid crystal composition which comprises at least one phenylbenzoate derivative represented by formula (1) wherein R1 is a hydrogen atom or an alkyl group of 1-10 carbons and others; X is a hydrogen atom or a halogen atom; A and B each independently represent a 1,4-phenylene group or a trans-1,4-cyclohexylene group and others; Z1 and Z2 each independently represent —CH2CH2—, —CO—O—, a covalent bond and others; m and n each independently represent 0 or 1.
摘要:
Chlorobenzene derivatives which have the following four-ring structure and are preferably usable for display devices of active matrix mode, and liquid crystal compositions comprising the derivative are provided: ##STR1## wherein ring A, ring B, and ring C independently represent trans-1,4-cyclohexylene group or 1,4-phenylene group, one or more hydrogen atoms on the six-membered ring of which may be replaced by halogen atoms, Z.sub.1, Z.sub.2, and Z.sub.3 represent --CH.sub.2 CH.sub.2 -- or single bond, respectively, provided that at least one of them represents --CH.sub.2 CH.sub.2 --, L.sub.1 and L.sub.2 represent H or halogen atom, and R represents an alkyl group or alkoxy group having 1 to 10 carbon atoms, provided that when Z.sub.1 and Z.sub.3 represent single bond and Z.sub.2 represents --CH.sub.2 CH.sub.2 --, ring A represents 1,4-phenylene group, and when Z.sub.1 and Z.sub.2 represent single bond, and Z.sub.3 represents --CH.sub.2 CH.sub.2 --, in no case does ring A represents trans-1,4-cyclohexylene group and both ring B and ring C represent 1,4-phenylene group at the same time.
摘要:
A liquid crystal composition which comprises as a first component at least one or more compounds represented by formula (1') ##STR1## wherein n represents an integer of 1-10; X represents H or F; or m represents 1 or 2 and as a second component at least one or more compounds represented by formulas (2-1) to (2-5) in which n represents an integer of 1-10. ##STR2##
摘要:
A novel, conjugated enyne compound expressed by the following formula (I), which has superior characteristics as an L.C. material and is stable under a usually used environment, and a L.C. composition containing the same are provided: ##STR1## wherein A is 1,4-phenylene or 1,4-cyclohexylene; B, C and D are 1,4-phenylene, 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, pyridine-2,5-diyl or 1,3-pyrimidine-2,5-diyl; L and M are covalent bond, 1,2-ethylene, oxycarbonyl, carbonyloxy, 1,2-ethenylene, 1,2-ethynylene, oxymethylene or methyleneoxy; n, m and l are 0 or 1; X and Z are H or F; R is fluoroalkyl, alkyl, alkoxy, alkoxyalkyl or alkenyl; Y is alkyl, alkoxy, cyano, halogen, cyanate, alkyl or alkoxy having at least one H replaced by halogen; when n is 0, L is covalent bond; when m or n is 0, M is covalent bond; and m, n and l are not simultaneously 0,the compound having a broad L.C. range, a low viscosity and a suitable .DELTA.n, and being applied to various uses, and reducing the viscosity of L.C. composition containing the same and enlarging the L.C. operation range.
摘要:
A liquid crystal composition which comprises at least one phenylbenzoate derivative represented by formula (1) ##STR1## wherein R.sub.1 is a hydrogen atom or an alkyl group of 1-10 carbons and others; X is a hydrogen atom or a halogen atom; A and B each independently represent a 1,4-phenylene group or a trans-1,4-cyclohexylene group and others; Z.sub.1 and Z.sub.2 each independently represent --CH.sub.2 CH.sub.2 --, --CO--O--, a covalent bond and others; m and n each independently represent 0 or 1.
摘要:
A liquid crystalline compound exhibiting a large .DELTA..epsilon. value, an electrical and chemical stability and a superior compatibility with existing liquid crystalline compounds, a liquid crystal composition containing the same, and a liquid crystal display element constructed by using the composition are provided, which liquid crystalline compound is expressed by the formula (I), F--(CH.sub.2)n-E--(CH.sub.2 CH.sub.2).sub.k --G--(CH.sub.2 CH.sub.2).sub.l --L--(CH.sub.2 CH.sub.2).sub.m --Z--Q--Y (I) wherein n is an integer of 1 to 10; k, l and m each independently are an integer of 0 to 2; ring E is 1,4-cyclohexylene group or 1,4-phenylene group, wherein one or more H atoms on each six-membered ring may be replaced by F atom(s); G and L each independently is a covalent bond or 1,4-cyclohexylene group or 1,4-phenylene group, wherein one or more H atoms on each six-membered ring may be replaced by F atom(s); Q is covalent bond or --O--; Y is a fluoroalkyl group of 1 to 3C or F atom; but in the case where ring E is 1,4-cyclohexylene group and at least one of G and L is covalent bond, k+l+m.noteq.0, and in the case where Q is --O--, Y is not F atom.