Nematic liquid crystal composition

摘要

A liquid crystal composition exhibits a positive dielectric anisotropy and sufficiently low viscosity without decreasing or increasing refractive index anisotropy or nematic phase-isotropic liquid phase transition temperature, and does not cause display failures. The liquid crystal composition contains one or more compounds selected from compounds represented by general formula (LC0) and one or more compounds selected from a group of compounds represented by general formula (LC1) to general formula (LC5), in which the liquid crystal composition contains one or more compounds in which at least one of A01, A02, and A11 to A42 in general formulae (LC0) to (LC4) represents a tetrahydropyran-2,5-diyl group.

主权项

1. A liquid crystal composition having a positive dielectric anisotropy and containing one or more compounds selected from compounds represented by general formula (LC0) and one or more compounds selected from a group of compounds represented by general formula (LC1) to general formula (LC5), wherein the liquid crystal composition contains one or more compounds in which at least one of A01 and A02 in general formula (LC0) represents a tetrahydropyran-2,5-diyl group:wherein in the formulae, R01 to R41 each independently represent an alkyl group having 1 to 15 carbon atoms where one or more —CH2— in the alkyl group may each be substituted with —O—, —CH═CH—, —CO—, —OCO—, —COO—, —C≡C—, —CF2O—, or —OCF2— so long as oxygen atoms are not directly adjacent to each other and one or more hydrogen atoms in the alkyl group may each be substituted with a halogen; R51 and R52 each independently represent an alkyl group having 1 to 15 carbon atoms where one or more —CH2— in the alkyl group may each be substituted with —O—, —CH═CH—, —CO—, —OCO—, —COO—, or —C≡C— so long as oxygen atoms are not directly adjacent to each other, and may each represent —OCF3 or —CF3 when A51 or A53 described below represents a cyclohexane ring; A01 to A42 each independently represent any one of structures below:wherein in the structures, one or more —CH2— in the cyclohexane ring may each be substituted with —O— so long as oxygen atoms are not directly adjacent to each other; in the structures, one or more —CH═ in the benzene ring may each be substituted with —N═ so long as nitrogen atoms are not directly adjacent to each other; and X61 and X62 each independently represent —H, —Cl, —F, —CF3, or —OCF3; A51 to A53 each independently represent any one of structures below:wherein in the formulae, one or more —CH2CH2— in the cyclohexane ring may each be substituted with —CH═CH—, —CF2O—, or —OCF2— and one or more —CH═ in the benzene ring may each be substituted with —N═ so long as nitrogen atoms are not directly adjacent to each other; X01 represents a hydrogen atom or a fluorine atom; X11 to X43 each independently represent —H, —Cl, —F, —CF3, or —OCF3; Y01 to Y41 each represent —Cl, —F, —OCHF2, —CF3, or —OCF3; Z01 and Z02 each independently represent a single bond, —CH═CH—, —C≡C—, —CH2CH2—, —(CH2)4—, —OCF2—, or —CF2O—; Z31 to Z42 each independently represent a single bond, —CH═CH—, —C≡C—, —CH2CH2—, —(CH2)4—, —OCF2—, or —CF2O— where at least one of Z31 and Z32 that are present represents a group other than a single bond; Z51 and Z52 each independently represent a single bond, —CH═CH—, —C≡—, —CH2CH2—, —(CH2)4—, —OCH2—, —CH2O—, —OCF2— or —CF2O—; m01 to m51 each independently represent an integer of 0 to 3; m01+m02, m31+m32, and m41+m42 are each independently 1, 2, 3, or 4; and when a plurality of A01, A03, A23, A31, A32, A41, A42, A52, Z01, Z02, Z31, Z32, Z41, Z42, and/or Z52 are present, they may be the same or different.