Patent ID: 7919154

Claim:
A 1-(trifluoromethyl)naphthalene derivative represented by the general formula (I) wherein, in the formula, each R 1 and R 2 represents independently an alkyl group having 1 to 12 carbon numbers, an alkenyl group having 2 to 12 carbon numbers, an alkoxyl group having 1 to 12 carbon numbers, or an alkenyloxy group having 2 to 12 carbon numbers; each one or more hydrogen atoms may be independently replaced with a fluorine atom, and each -CH 2 - group may be independently replaced with —O—, —S—, —CO—, —COO—, —OCO—, or —OCOO—; each A 1 , A 2 , B 1 , and B 2 represents independently a trans-1,4-cyclohexylene group or a 1-4-phenylene group which may be replaced with one or more fluorine atoms; each L 1 , L 2 , M 1 , and M 2 represents independently a single bond, —CH 2 CH 2 —, —CH═CH—, —C≡C—, —OCH 2 —, —CH 2 O—, —OCF 2 —, —CF 2 O—, —CF 2 CF 2 —, —CF═CF—, —OCO—, —COO—, —CH(CH 3 )CH 2 —, —CH 2 CH(CH 3 )—, —CH(CH 3 )CH(CH 3 )—, —OCH(CH 3 )—, —CH(CH 3 )O—, —(CH 2 ) 4 —,—(CH 2 ) 3 O—, —O(CH 2 ) 3 —, —COS—, or —SCO—; each X 1 and X 2 represents independently a hydrogen atom or a fluorine atom; and each p, q, r, and s represents independently 0 or 1.