| 摘要 |
PURPOSE: A cyclohexene derivative, a liquid crystal composition containing the derivative and a LCD device using the composition are provided, to obtain a cyclohexene derivative having a low melting point and low viscosity in nematic or smetic phase and high dielectric anisotropy. CONSTITUTION: The cyclohexene derivative is represented by the formula 1, wherein A1, A2, A3 and A4 are independently trans-1,4-cyclohexylene, 1,4-cyclohexelene, 1,4-phenylene, 2,5-pyrimidinediyl, 2,5-pyridinediyl or 2,5-dioxanediyl; B1, B2, B3 and B4 are independently a single bond, 1,2-ethylene, vinylene, a triple bond of C-C, -CH2O-, -OCH2-, -COO-, -OOC-, -CF2O-. -OCF2-, -O- or -CF=CF-; R1 is a F-substituted or unsubstituted alkyl, alkenyl, alkoxy group of C1-C10; R2 is a F-substituted or unsubstituted alkyl, alkenyl, alkoxy group of C1-C10, F, Cl, CN, NCS, CF3, OCF3, OCF2CF3 or SF5; X1, X2, X3 and X4 are independently H or F; and l, m, n and o are independently 0 or 1 (wherein l, m, n and o are not 0 at the same time).
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