| 主权项 |
1. A liquid crystal composition comprising one or more compounds represented by general formula (I) and one or more compounds represented by general formula (II): (In the formulae, R11, R12, R21, and R22 each independently represent an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, or an alkenyl group having 2 to 8 carbon atoms and are each independently unsubstituted or have at least one halogen group as a substituent, and one or more —CH2— present in these groups may each be independently substituted with —O—, —S—, —CO—, —COO—, —OCO—, or —OCO—O—, provided that oxygen atoms are not directly bonded to each other; A11, A12, A21, and A22 each independently represent a group selected from the group consisting of (a) a trans-1,4-cyclohexylene group (where one —CH2— or two or more non-adjacent —CH2— present in this group may be substituted with —O— and/or —S—), (b) a 1,4-phenylene group (where one —CH2— or two or more non-adjacent —CH2— groups present in this group may be substituted with —N—), and (c) 1,4-cyclohexenylene, 1,4-bicyclo(2.2.2)octylene, piperidine-1,4-diyl, naphthalene-2,6-diyl, decahydronaphthalene-2,6-diyl, and 1,2,3,4-tetrahydronaphthalene-2,6-diyl, where hydrogen atoms in the group (a), group (b), and group (c) may each be independently substituted with an alkyl group having 1 to 3 carbon atoms, an alkenyl group having 2 or 3 carbon atoms, an alkoxyl having 1 to 3 carbon atoms, an alkenyloxy group having 1 to 3 carbon atoms, a CN, or a halogen; Z11, Z21, and Z22 each independently represent —COO—, —OCO—, —CH2O—, —OCH2—, —CF2O—, —OCF2—, —CH2CH2—, —CH═CH—, —C≡C—, —(CH2)4—, —CH═CH—CH2CH2—, —CH2CH2—CH═CH—, or a single bond; and a11, a21, and a22 each independently represent 0 or 1.) |
