| abstract |
(57) [Summary] According to the present invention, general formula (1) Wherein R 1 is an alkyl group having 1 to 18 carbon atoms, and the methylene group in the alkyl group may be replaced by an oxygen atom, a sulfur atom, -CH = CH- or -C≡C-, A hydrogen atom in the alkyl group may be substituted with a halogen atom or a cyano group; rings A, B and C are each 1,4-cyclohexylene, in which a ring hydrogen atom may be substituted with a halogen atom, 4-phenylene or an analogue thereof; Z 1 , Z 2 and Z 3 are each a single bond, -CH 2 CH 2- , -CH = CH-, -C≡C-, -CH 2 O-,- OCH 2 -, - (CH 2 ) 4 -, - (CH 2) 3 -O -, - O- (CH 2) 3 -, - (CH 2) 2 -CH = CH -, - CH = CH- ( CH 2) 2 -, - CF 2 O -, - OCF 2 -, - CR 2 = CH -, - CH = CR 2 - Moshiku A -CF = CF-, also, R 2 is an alkyl group of 1 to 5 carbon atoms; X is hydrogen atom or a fluorine atom; p and q are each 0 or 1; and, m is 0 A fluorovinyl derivative having a liquid crystal property represented by the following formula, a liquid crystal composition, and a liquid crystal display device using the same. |