| 摘要 |
PURPOSE: Provided is a liquid crystalline compound which has a large absolute value(!DELTA epsilon!) of a dielectric anisotropy and shows a relatively small refractive anisotropy, a liquid crystal composition comprising this compound which makes it possible to drive display elements of various modes at a low voltage, and a liquid crystal display element containing this liquid crystal composition. CONSTITUTION: The liquid crystalline compound represented by formula (1)(wherein R1 and R3 each independently represent hydrogen, halogen, a cyano group or an alkyl group having 1 to 20 carbon atoms, in which at least one -CH2- may be substituted with -CH=CH-, -C≡C-, -O- or -S- but -O- is not adjacent to another -O-, and in which at least one hydrogen may be substituted with halogen; rings A1 to A5 each independently represent a 1,4-cyclohexylene group in which at least one -CH2- not adjacent to each other may be substituted with -O- or -S-, a 1,4-cyclohexenylene group, or a 1,4-phenylene group in which at least one =CH- may be substituted with =N- and hydrogen on the ring may be substituted with halogen; Z1 to Z4 each independently represent a single bond, -CH2CH2-, -CH2O-, -OCH2-, -COO-, -OCO-, -CH=CH-, -C≡C-, -CF2O- or -OCF2-; Y1, Y2, Y3 and Y4 each independently represent hydrogen or fluorine; and k, 1, m and n independently represent 0 or 1). |
