| abstract |
(57) [Problem] An object of the present invention is to provide a novel liquid crystal compound having a tetrahydronaphthalene ring, and to provide a practical liquid crystal composition using the compound. SOLUTION: General formula (I) (R: alkyl, alkoxyl, alkenyl or alkenyloxy having 1 to 20 carbon atoms, m and n: independently 0 or 1, rings A, B and C: independently trans-1,4-cyclohexylene, Or 1,4-phenylene, pyridine-, which may be substituted by one or more halogen atoms. 2,5-diyl, etc., L, M and Q: independently -CH 2 C H 2 —, —CH 2 CH 2 CH 2 CH 2 —, —CH ＝ CH— X 1 , X 2 and X 3 independently represent an H atom or an F atom; Z: H atom, halogen atom, cyano, cyanato, or C number 1 which may be substituted by one or more F atoms 20. A tetrahydronaphthalene derivative represented by alkyl, alkoxyl, alkenyl, alkenyloxy), a liquid crystal composition containing the same and a display element using the same. |