Abstract: The liquid crystal composition includes at least one compound selected from a group of compounds represented by formula (1) as a first component, has a positive dielectric anisotropy, and has a nematic phase, and a liquid crystal display element containing the composition: wherein R11 and R12 are alkyls having different carbon numbers.

Abstract: The liquid crystal composition includes at least one compound selected from a group of compounds represented by formula (1) as a first component, has a positive dielectric anisotropy, and has a nematic phase, and a liquid crystal display element containing the composition: wherein R11 and R12 are alkyls having different carbon numbers.

Abstract: The liquid crystal composition includes at least one compound selected from a group of compounds represented by formula (1) as a first component, has a positive dielectric anisotropy, and has a nematic phase, and a liquid crystal display element containing the composition: wherein R11 and R12 are alkyls having different carbon numbers.

Abstract: The liquid crystal composition includes at least one compound selected from a group of compounds represented by formula (1) as a first component, has a positive dielectric anisotropy, and has a nematic phase, and a liquid crystal display element containing the composition: wherein R11 and R12 are alkyls having different carbon numbers.

Abstract: The liquid crystal composition includes at least one compound selected from a group of compounds represented by formula (1) as a first component, has a positive dielectric anisotropy, and has a nematic phase, and a liquid crystal display element containing the composition: wherein R11 and R12 are alkyls having different carbon numbers.

Abstract: A liquid crystal composition containing at least one compound represented by formula (1) as a first component and at least one compound selected from the group of compounds represented by formulas (2) and (3), but not containing a compound represented by formula (4), and having a negative dielectric anisotropy: wherein R1 is alkyl or alkenyl; R2 is alkyl or alkoxy; R3 is alkyl or alkoxymethyl; R4 is alkyl; R6 is alkyl, alkenyl or alkoxy; A1 and A2 are independently 1,4-cyclohexylene or 1,4-phenylene; A3 is 1,4-cyclohexylene, 1,4-phenylene or 2-fluoro-1,4-phenylene; Z1 is a single bond or —COO—; and n is 0 or 1.

Abstract: A liquid crystal composition including a compound of formula (1), a compound of formula (2), a compound of formula (3), and a compound of formula (4): wherein R1 and R2 are independently an alkyl group; R3 is an alkyl or alkenyl group; Y1 is fluorine or —OCF3; Y2 is an alkyl group, an alkoxy group, fluorine, chlorine, or —OCF3; X1 is hydrogen or fluorine; A1 is 1,4-cyclohexylene or 1,4-phenylene; A2 is 1,4-cyclohexylene, 1,4-phenylene or 2,6-difluoro-1,4-phenylene; Z1 is a single bond or —(CH2)2—; Z2 is a single bond, —(CH2)2—, —COO—, or —CF2O—; and Z3 is a single bond or —COO—.

Abstract: A liquid crystal composition having a negative dielectric anisotropy and containing at least one compound represented by formula (1), at least one compound represented by formula (2), at least one compound represented by formula (4), at least one compound represented by formula (5), and at least one compound represented by formula (6), and the composition essentially consisting of these components: wherein R1, R2, R3 and R4 is, for example, alkyl; A1, A2 and A3 is, for example, 1,4-phenylene; Z1 is a single bond, —CH2O— or —COO—; and Z2 is a single bond or —COO—.

Abstract: Liquid crystal compositions are provided having a high “higher limit temperature” of a nematic phase, a low “lower limit temperature” of a nematic phase, small viscosity, suitable optical anisotropy, low threshold voltage and large specific resistance. The composition includes at least one compound selected from a group of compounds represented by formula (1) as a first component, at least one compound selected from a group of compounds represented by formula (2) as a second component, at least one compound selected from a group of compounds represented by formula (3) as a third component, and at least one compound selected from a group of compounds represented by formulae (4) and (5) as a fourth component: wherein R1 is alkyl; R2 is alkenyl; R3 is alkyl or alkenyl; A1 and A2 are 1,4-phenylene, for example; Z1, Z2, and Z3 are a single bond, for example; Y1 and Y2 are fluorine, for example.

Abstract: A liquid crystal composition having a negative dielectric anisotropy and containing at least one compound selected from a group of compounds represented by formula (1) as a first component, at least one compound selected from a group of compounds represented by formula (2) as a second component, at least one compound selected from a group of compounds represented by formula (3) as a third component, and at least one compound selected from a group of compounds represented by formula (4) as a fourth component: wherein the liquid crystal composition consists essentially of the first component, the second component, the third component and the fourth component and wherein R1 is alkyl or alkenyl; R2 is alkyl or alkoxy; R3 is alkyl or alkoxymethyl; R4 is alkyl; A1 is 1,4-cyclohexylene or 1,4-phenylene; A2 is 1,4-cyclohexylene, 1,4-phenylene or 2-fluoro-1,4-phenhlene; and Z1 is a single bond or —COO—.

Abstract: A liquid crystal composition having a negative dielectric anisotropy and containing at least one compound selected from a group of compounds represented by formula (1) as a first component, at least one compound selected from a group of compounds represented by formula (2) as a second component, at least one compound selected from a group of compounds represented by formula (3) as a third component, and at least one compound selected from a group of compounds represented by formula (4) as a fourth component: wherein the liquid crystal composition consists essentially of the first component, the second component, the third component and the fourth component and wherein R1 is alkyl or alkenyl; R2 is alkyl or alkoxy; R3 is alkyl or alkoxymethyl; R4 is alkyl; A1 is 1,4-cyclohexylene or 1,4-phenylene; A2 is 1,4-cyclohexylene, 1,4-phenylene or 2-fluoro-1,4-phenhlene; and Z1 is a single bond or —COO—.

Abstract: A liquid crystal composition having a negative dielectric anisotropy and containing at least one compound represented by formula (1), at least one compound represented by formula (2), at least one compound represented by formula (4), at least one compound represented by formula (5), and at least one compound represented by formula (6), and the composition essentially consisting of these components: wherein R1, R2, R3 and R4 is, for example, alkyl; A1, A2 and A3 is, for example, 1,4-phenylene; Z1 is a single bond, —CH2O— or —COO—; and Z2 is a single bond or —COO—.

Abstract: A liquid crystal composition containing at least one compound represented by formula (1) as a first component and at least one compound selected from the group of compounds represented by formulas (2) and (3), but not containing a compound represented by formula (4), and having a negative dielectric anisotropy: wherein R1 is alkyl or alkenyl; R2 is alkyl or alkoxy; R3 is alkyl or alkoxymethyl; R4 is alkyl; R6 is alkyl, alkenyl or alkoxy; A1 and A2 are independently 1,4-cyclohexylene or 1,4-phenylene; A3 is 1,4-cyclohexylene, 1,4-phenylene or 2-fluoro-1,4-phenylene; Z1 is a single bond or —COO—; and n is 0 or 1.

Abstract: The liquid crystal composition includes at least one compound selected from a group of compounds represented by formula (1) as a first component, has a positive dielectric anisotropy, and has a nematic phase, and a liquid crystal display element containing the composition: wherein R11 and R12 are alkyls having different carbon numbers.

Abstract: Liquid crystal compositions are provided having a high “higher limit temperature” of a nematic phase, a low “lower limit temperature” of a nematic phase, small viscosity, suitable optical anisotropy, low threshold voltage and large specific resistance. The composition includes at least one compound selected from a group of compounds represented by formula (1) as a first component, at least one compound selected from a group of compounds represented by formula (2) as a second component, at least one compound selected from a group of compounds represented by formula (3) as a third component, and at least one compound selected from a group of compounds represented by formulae (4) and (5) as a fourth component: wherein R1 is alkyl; R2 is alkenyl; R3 is alkyl or alkenyl; A1 and A2 are 1,4-phenylene, for example; Z1, Z2, and Z3 are a single bond, for example; Y1 and Y2 are fluorine, for example.

Abstract: A liquid crystal composition including a compound of formula (1), a compound of formula (2), a compound of formula (3), and a compound of formula (4): wherein R1 and R2 are independently an alkyl group; R3 is an alkyl or alkenyl group; Y1 is fluorine or —OCF3; Y2 is an alkyl group, an alkoxy group, fluorine, chlorine, or —OCF3; X1 is hydrogen or fluorine; A1 is 1,4-cyclohexylene or 1,4-phenylene; A2 is 1,4-cyclohexylene, 1,4-phenylene or 2,6-difluoro-1,4-phenylene; Z1 is a single bond or —(CH2)2—; Z2 is a single bond, —(CH2)2—, —COO—, or —CF2O—; and Z3 is a single bond or —COO—.

Abstract: A liquid crystal composition having a negative dielectric anisotropy, containing at least one compound selected from the group of compounds represented by Formulas (1-1), (1-2), (1-3) and (1-4) as a first component: wherein R5 is alkyl or alkenyl; R2 is alkyl or alkoxy; A5 is 1,4-phenylene or 2-fluoro-1,4-phenylene; and A6 is 1,4-phenylene, 2-fluoro-1,4-phenylene or 2,3-difluoro-1,4-phenylene.

Abstract: A liquid crystal composition containing at least one compound selected from compounds of formula (1) and formula (2) as a first component, at least one compound selected from compounds of formula (3) as a second component, and at least one compound selected from compounds of formula (4) as a third component: wherein R1 is alkyl; R2 is alkyl or alkenyl; Z1 and Z2 are independently a single bond or —(CH2)2—; X1 is hydrogen or fluorine; and Y1 is fluorine or —OCF3. Also provided is a liquid crystal display element containing the composition.

Abstract: A liquid crystal composition including three components, optionally four components, selected from the compounds (1-1) to (3-3) is provided. The composition has plural characteristics, i.e., a wide temperature range of a nematic phase, a low viscosity, a suitable optical anisotropy, and a large dielectric anisotropy, in a properly balanced manner. The invention further provides a liquid crystal display element including the composition.

Abstract: The present invention provides a liquid crystal composition comprising at least one compound selected from the compounds represented by each of formulas (1) to (5) as set forth in the specification. The invention further provides a liquid crystal display element comprising the composition.