Patent ID: 9587175
Date: 2017-03-07
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 in the formulae, R 01 represents an alkenyl group having 2 to 5 carbon atoms, R 11 , R 21 , R 31 and 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 below represents a cyclohexane ring, A 01 , A 02 , A 03 , A 11 , A 21 , A 22 , A 23 , A 31 , A 32 , A 41 , A 42 each independently represent any one of the 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, 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 the 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 , X 12 , X 21 , X 22 , X 31 , X 32 , X 41 , X 42 and X 43 each independently represent —H, —Cl, —F, —CF 3 , or —OCF 3 , Y 01 , Y 11 , Y 21 , Y 31 , and 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 , Z 32 , Z 41 , Z 42 , Z 51 and Z 52 , each independently represent a single bond, —CH═CH—, —C≡C—, —CH 2 CH 2 —, —(CH 2 ) 4 —, —OCF 2 —, or —CF 2 O—, 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≡C—, —CH 2 CH 2 —, —(CH 2 ) 4 —, —OCH 2 —, —CH 2 O—, —OCF 2 — or —CF 2 O—, m 01 and m 02 represent an integer of 0 to 2, m 21 , m 31 , m 32 , m 41 , m 42 and m 51 each independently represent an integer of 0 to 3, m 01 +m 02 is 1, or 2, 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.