A liquid crystal composition having a nematic phase and containing three components, wherein the first component is at least one compound selected from the group of compounds represented by formula (1), the second component is at least one compound selected from the group of compounds represented by formula (2), and the third component is at least one compound selected from the group of compounds represented by formula (3), and also relates to a liquid crystal display device containing the composition:
wherein R1 and R2 are each independently alkyl having 1 to 12 carbons or alkenyl having 2 to 12 carbons; R3 is alkyl having 1 to 12 carbons or alkoxy having 1 to 12 carbons; R4 and R5 are each independently alkyl having 1 to 12 carbons; X1 is fluorine, chlorine, -OCF2H, -CF3 or -OCF3; Y1 is hydrogen or fluorine; and m and n are each independently 0 or 1.
                            一种具有向列相并含有三种成分的液晶组合物,其中第一种成分是从式(1)所代表的化合物组中选出的至少一种化合物,第二种成分是从式(2)所代表的化合物组中选出的至少一种化合物,第三种成分是从式(3)所代表的化合物组中选出的至少一种化合物,还涉及一种含有该组合物的液晶显示装置:
其中 R1 和 R2 各自独立地是具有 1 至 12 个碳原子的烷基或具有 2 至 12 个碳原子的烯基;R3 是具有 1 至 12 个碳原子的烷基或具有 1 至 12 个碳原子的烷氧基;R4 和 R5 各自独立地是具有 1 至 12 个碳原子的烷基;X1 是
氟、
氯、-O
CF2H、-
CF3 或 -O   ;Y1 是氢或
氟;以及 m 和 n 各自独立地是 0 或 1。