| abstract |
A liquid crystal compound, a liquid crystal composition, and a liquid crystal display device using the same are provided. The liquid crystal compound has the structure of formula (I) (I) Wherein R 1 is hydrogen, C 1-10 alkyl, or C 2-10 alkenyl; R 2 is C 2-10 alkenyl, or C 2-10 fluoroalkenyl, wherein one or two non-adjacent -CH 2 - are replaced by -O-, or C 2-10 ether; A 1 , A 2 , A 3 , and A 4 are independently ego; R 3 is independently hydrogen or halogen; Z 1 , Z 2 and Z 3 are independently a single bond, -CH 2 -, - (CH 2 ) 2 -, - (CH 2 ) 4 -, -CH 2 O-, -OCH 2 - CF-, - (CH 2) 2 CF 2 O-, - (CH 2) 2 OCF 2 -, -OCF 2 (CH 2) 2 -, -CF 2 O (CH 2) 2 -, -COO-, - OCO-, -CF 2 O-, -OCF 2 -, -C≡C-, -CH = CH-, -CH = CH- (CH 2) 2 -, or - (CH 2) 2 -CH = CH- ego; n and m are independently 1 or 0; |