| 摘要 |
PURPOSE: A nematic liquid crystal composition and a liquid crystal display device containing the composition are provided, to obtain a composition for motion picture having a high phase transition temperature and a rapid response time by using a nematic liquid crystal compound having a high refractive index and a high dielectric constant. CONSTITUTION: The composition comprises a nematic liquid crystal compound represented by the formula 1, wherein R is CnH2n+1O, CnH2n+1 or CnH2n-1 (wherein n is an integer of 1-15); n is an integer of 1-3; B is a phenyl, cyclohexane, phenyl-cyclohexane or cyclohexane-phenyl group, a direct single bond, -CH2CH2-, -COO-, -C=C- or a carbon-carbon triple bond; X is H, F, Cl, Br, NCS or SCN; Y is NCS, SCN or F; and Z is H, F, Cl, Br, NSC or SCN. Preferably the composition comprises 1-80 wt% of the nematic liquid crystal compound of the formula 1; and 20-99 wt% of at least one liquid crystal compound selected from the compounds represented by R2-A1-B1-X1, and the formulas 2, 4 and 5, wherein A is a phenyl, cyclohexane, phenyl-cyclohexane or cyclohexane-phenyl group, a direct single bond, -CH2CH2-, -COO-, -C=C- or a carbon-carbon triple bond; R2 is independently CnH2n+1 or CnH2n (wherein n is an integer of 1-15); X1 is F, CF3, OCF3, CH=CF2 or OCH=CF2; and A3, B2 and C are independently F, CF3, OCF3 or H. |
