NEMATIC LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY ELEMENT USING THE SAME

摘要

The present invention relates to a liquid crystal composition, which is a liquid crystal composition containing a compound represented by General Formula (II-1) as an anti-oxidizing agent for a liquid crystal composition containing the compound represented by General Formula (II-1) and also as a first component, and a compound represented by General Formula (K) as a second component. The compound represented by General Formula (II-1) enables obtainment of a working effect of the anti-oxidizing agent, and therefore it allows provision of a liquid crystal composition containing the anti-oxidizing agent which has improved reliability like low temperature stability, while the high dielectric anisotropy is maintained.

主权项

1. A liquid crystal composition which comprises a compound represented by General Formula (II-1):(in General Formula (II-1), M represents a hydrocarbon having carbon atom number of 1 to 25 (one or two or more —CH2— in the hydrocarbon may be substituted with —O—, —CO—, —COO—, or —OCO— such that the oxygen atoms are not in direct contact with each other), a 1,4-phenylene group, or a trans-1,4-cyclohexylene group, in which any hydrogen atom of the 1,4-phenylene group may be substituted with a fluorine atom, Xy's, which may be the same as or different from each other, represent an alkylene group having carbon atom number of 1 to 15 (one or two or more —CH2— in the alkylene group may be substituted with —O—, —CO—, —COO—, or —OCO— such that the oxygen atoms are not in direct contact with each other), —OCH2—, —CH2O—, —COO—, —OCO—, —CF2O—, —OCF2—, —CF2CF2—, —CH═CH—COO—, —CH═CH—OCO—, —COO—CH═CH—, —OCO—CH═CH—, —CH═CH—, —C≡C—, a single bond, a 1,4-phenylene group, or a trans-1,4-cyclohexylene group in which any hydrogen atom of the 1,4-phenylene group may be substituted with a fluorine atom, and l represents an integer of 2 to 6), and, a compound represented by General Formula (K):(in General Formula (K), Rk1's each independently represent an alkyl group having carbon atom number of 1 to 10 or an alkenyl group having carbon atom number of 2 to 10, in which one or two or more non-adjacent —CH2— in the group may be each independently substituted with —C≡C—, —O—, —CO—, —COO—, or —OCO—, and one or two or more non-adjacent hydrogen atoms in the group may be each independently substituted with a fluorine atom,
ring K1 and ring K2 each independently represent a 1,4-cyclohexylene group (one or two or more non-adjacent —CH2— in the group may be substituted with —O— or —S—) or a 1,4-phenylene group (one or two or more non-adjacent —CH═ in the group may be substituted with —N═), and the hydrogen atoms in the group may be each independently substituted with a cyano group, a fluorine atom, or a chlorine atom, ring K0 represents a naphthalene-2,6-diyl group or a 1,4-phenylene group in which the hydrogen atoms in the group may be each independently substituted with a fluorine atom, Zk1, Zk2, or Zk3 each independently represents a single bond, —CH2CH2—, —(CH2)4—, —OCH2—, —CH2O—, —OCF2—, —CF2O—, —CH2CH2CF2O—, —COO—, —OCO—, or —C≡C—, nk1's each independently represent 0, 1, 2, 3, or 4, with the proviso that, when nk1 is 2 or more, the rings K2 may be the same as or different from each other, and Xk1, Xk2, Xk3, and Xk4 each independently represent a hydrogen atom or a fluorine atom, and Yk1's each independently represent a fluorine atom, a cyano group, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group, a trifluoromethoxy group, or a 2,2,2-trifluoroethyl group).