Patent ID: 9605208
Date: 2017-03-28
CPC Classifications: C09K,G02F

Claim:
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 A 01 and A 02 in general formula (LC0) represents a tetrahydropyran-2,5-diyl group: wherein in the formulae, R 01 to R 41 each independently represent an alkyl group having 1 to 15 carbon atoms where one or more —CH 2 — in the alkyl group may each be substituted with —O—, —CH═CH—, —CO—, —OCO—, —COO—, —C≡C—, —CF 2 O—, or —OCF 2 — 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; R 51 and R 52 each independently represent an alkyl group having 1 to 15 carbon atoms where one or more —CH 2 — 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 —OCF 3 or —CF 3 when A 51 or A 53 described below represents a cyclohexane ring; A 01 to A 42 each independently represent any one of structures below: wherein in the structures, one or more —CH 2 — 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 X 61 and X 62 each independently represent —H, —Cl, —F, —CF 3 , or —OCF 3 ; A 51 to A 53 each independently represent any one of structures below: wherein in the formulae, one or more —CH 2 CH 2 — in the cyclohexane ring may each be substituted with —CH═CH—, —CF 2 O—, or —OCF 2 — 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; X 01 represents a hydrogen atom or a fluorine atom; X 11 to X 43 each independently represent —H, —Cl, —F, —CF 3 , or —OCF 3 ; Y 01 to Y 41 each represent —Cl, —F, —OCHF 2 , —CF 3 , or —OCF 3 ; Z 01 and Z 02 each independently represent a single bond, —CH═CH—, —C≡C—, —CH 2 CH 2 —, —(CH 2 ) 4 —, —OCF 2 —, or —CF 2 O—; Z 31 to Z 42 each independently represent a single bond, —CH═CH—, —C≡C—, —CH 2 CH 2 —, —(CH 2 ) 4 —, —OCF 2 —, or —CF 2 O— where at least one of Z 31 and Z 32 that are present represents a group other than a single bond; Z 51 and Z 52 each independently represent a single bond, —CH═CH—, —C≡—, —CH 2 CH 2 —, —(CH 2 ) 4 —, —OCH 2 —, —CH 2 O—, —OCF 2 — or —CF 2 O—; m 01 to m 51 each independently represent an integer of 0 to 3; m 01 +m 02 , m 31 +m 32 , and m 41 +m 42 are each independently 1, 2, 3, or 4; and when a plurality of A 01 , A 03 , A 23 , A 31 , A 32 , A 41 , A 42 , A 52 , Z 01 , Z 02 , Z 31 , Z 32 , Z 41 , Z 42 , and/or Z 52 are present, they may be the same or different.