Abstract: A liquid crystal composition having material properties for an STN mode, a low threshold voltage, a small temperature dependency thereat, a high stability to heat and ultraviolet rays, and a small frequency dependency of a dielectric anisotropy (&Dgr;&egr;) at a low temperature. The liquid crystal composition comprises a first component of the formula (1), and a second component selected from the general formulas (2-1) to (2-4), without any liquid crystalline compound having a dielectric anisotropy value (&Dgr;&egr;) of 5 or more and three or more six-membered rings, as another component: wherein R1 to R8, A1 to A5, Z1, m, n and X1 to X5 are defined in the specification.

Abstract: A liquid crystal composition having a high voltage holding ratio especially at a high temperature region, a wide range of a liquid crystal phase, low viscosity, and properly large &Dgr;n, while satisfying general characteristics required for the liquid crystal composition of the AM-LCD, is presented. The composition comprises at least one compound selected from the group of compounds expressed by formulae (1-1), (1-2) and (1-3) as a first component, and comprises at least one compound selected from the group of compounds expressed by formulae (2-1), (2-2), (2-3), (2-4), (2-5), and (2-6) as a second component.

Abstract: Liquid crystal compositions are disclosed which have low threshold voltage, small temperature dependence of the threshold voltage, high stability against heat and ultraviolet rays, and small frequency dependence of dielectric anisotropy (&Dgr;∈) at low temperature while fulfilling general characteristics required for STN mode materials, characterized by comprising the compound expressed by formula (1) wherein R1 represents alkyl having 1 to 10 carbon in which one methylene may be replaced by —O— or —CH═CH—; X1 and X2 each independently represents H or F.

Abstract: A aniline derivative represented by general formula (1) wherein R and R′ represent independently each other alkyl with 1 to 10 carbon, alkoxyalkyl with 1 to 10 carbon, or hydrogen; x represents cyano, halogen, haloalkyl, haloalkyloxy, or 2-cyanoethynyl; Y represents fluorine or hydrogen; na and nc represent independently each other 0 or 1; Za, Zb, and Zc represent independently each other a single bond, 1,2-ethylene, carbonyloxy, or oxymethylene; ring A1 represents 1,4-phenylene in which hydrogen may be substituted by fluorine; ring A2 and ring A3 represent independently each other 1,4-cyclohexylene, 1,4-phenylene in which hydrogen may be substituted by fluorine, or 1,3-pyrimidine-2,5-diyl.

Abstract: There is provided a liquid crystalline compound having a high voltage holding ratio which has a very small degree of temperature dependence, a low threshold voltage which has a very small degree of temperature dependence, a high &Dgr;n, and excellent miscibility with other liquid crystal materials at low temperature; a liquid crystal composition; and a liquid crystal display element, and the liquid crystalline compound is a substituted benzene derivative represented by general formula (1), 1

Abstract: 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.

Abstract: Disclosed are liquid crystalline compounds which (i) are characterized in that the compounds have a wide temperature range in which the compounds exhibit a liquid crystal phase, are low in viscosity, and have a negative and large &Dgr;&egr;, (ii) are readily mixed with other various liquid crystal materials even at low temperatures, and (iii) are useful as component of liquid crystal compositions suitable both for TFT type display mode and IPS mode; and liquid crystal composition comprising the liquid crystalline compound; the compounds are expressed by the general formula (1) wherein R1 represents an alkyl group having 1 to 15 carbon atoms; ring A1, ring A2, and ring A3 independently represent trans-1,4-cyclohexylene group, trans-1,4-silacyclohexylene group, pyrimidine-2,5-diyl group, pyridine-2,5-diyl group, 1,3-dioxane-2,5-diyl group, tetrahydropyran-2,5-diyl group, 1,3-dithian-2,5-diyl group, or tetrahydrothiopyran-2,5-diyl group, or 1,4-phenylene group in which one or more hydrogen atom

Abstract: 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.

Abstract: The present invention provides a liquid crystalline compound having a difluoropropyleneoxy group as a bonding group, which is represented by Formula (1): 1

Abstract: The present invention is to provide a liquid crystal composition which has particularly a high upper limit temperature of a nematic phase, a low lower limit temperature of the nematic phase and a small birefringence while satisfying general characteristics required for the liquid crystal composition for an AM-LCD. Liquid crystal compositions are disclosed which comprise a component I comprising at least one compound selected from the group of compounds represented by Formula (I-1) or (I-2) as described in the specification, a component II comprising at least one compound selected from the group of compounds represented by Formulas (II-1) to (II-8) as described in the specification and a component III comprising at least one compound selected from the group of compounds represented by Formulas (III-1) to (III-5) as described in the specification.

Abstract: Liquid crystalline compounds are disclosed which have large dielectric anisotropy and relatively low viscosity, and which are represented by formula (1) 1

Abstract: The present invention provides a liquid crystal composition comprising a component I comprising at least one compound selected from the group of compounds represented by Formula (I) and a component II comprising at least one compound selected from the group of compounds represented by Formulas (II-1) and (II-2): wherein R1, R3 and R5 each represent independently an alkyl group having C1 to C10 or an alkenyl group having C2 to C10; R2, R4 and R6 each represent independently an alkyl group or alkoxy group having C1 to C10 or an alkenyl-group having C2 to C10; Z1 and Z2 each represent independently a single bond or —CH2CH2—; and rings A1 and A2 each represent independently trans-1,4-cyclohexylene, 1,4-phenylene or 1,4-phenylene in which at least one hydrogen atom is substituted with a fluorine atom.

Abstract: The present invention provides a liquid crystal composition comprising the compounds represented by the following formulas (I) and (II) wherein each R1 independently represents an alkyl group having 1-10 carbon atoms or an alkenyl group having 2-10 carbon atoms; each R2 independently represents an alkyl or alkoxy group having 1-10 carbon atoms or an alkenyl group having 2-10 carbon atoms; Z1 and Z2 represent —CH2SiH2—, a single bond or —CH2CH2—, with the proviso that one of Z1 and Z2 represents —CH2SiH2— and the other represents a single bond or —CH2CH2—; A1, A2 and A3 each independently represent a ring including aromatic, alicyclic and heterocyclic groups; m and n are each independently 0 or 1; and Z3 and Z4 each independently represent a single bond, —CH2CH2—, —CF2O— or —OCF2—.

Abstract: Liquid crystalline compounds which have large dielectric anisotropy, high electrical insulation properties (high specific resistance or high voltage holding ratio), small temperature dependence, broad liquid crystal phase temperature range, excellent compatibility and low viscosity and which are represented by formula (1) 1

Abstract: Liquid crystalline compounds superior in having an eminent dielectric anisotropy, being stable against environment and having improved miscibility with other liquid crystalline compounds, as well as a liquid crystal composition with driving-ability at a low voltage and responsibility at a high-speed comprising the compounds as a constituting component, and a liquid crystal display element comprising the composition are provided, said compounds are fluoroalkoxybenzene derivatives expressed by the general formula (1) wherein A1, A2 and A3 each independently denote trans-1,4-cyclohexylene,1,4-phenylene or so; B, B2 and B3 each independently denote a single bond, 1,2-ethylene or so; R denotes an alkyl group having 1 to 15 carbon atoms optionally substitutable with a halogen atom(s); Rf denotes a fluoroalkyl group having 1 to 3 carbon; k, m, and n each independently denote 0 or 1; with the proviso that when k=0 is a case, then one of B1, B2 and B3 is a methyleneoxy bond or so, and that whe

Abstract: Disclosed are liquid crystalline compounds which (i) are characterized in that the compounds have a wide temperature range in which the compounds exhibit a liquid crystal phase, are low in viscosity, and have a negative and high &Dgr;&egr;, (ii) are readily mixed with other various liquid crystal materials even at low temperatures, and (iii) are useful as component of liquid crystal compositions suitable both for TFT type display mode and IPS mode; and liquid crystal composition comprising the liquid crystalline compound; the compounds are expressed by the general formula (1) 1

Abstract: Provided are a liquid crystalline compound having a wide liquid crystal phase temperature range, low viscosity, a large elastic constant ratio K33/K11 and excellent solubility at low temperature, a liquid crystal composition using the same and a liquid crystal display.

Abstract: 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) 1

Abstract: 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 m

Abstract: The invention relates to a fluoro-substituted alkenyl compound represented by formula (1) 1