The present invention is to provide liquid crystalline compounds having a wide temperature range of a liquid crystal phase, low viscosity, and large ratio of elastic constants; liquid crystal compositions comprising the compound; and liquid crystal display devices comprising the composition; the liquid crystalline compounds being fluoroalkenyl derivatives expressed by the general formula (1)
wherein A1, A2, A3, and A4 independently represent trans-1,4-cyclohexylene group or 1,4-phenylene group; Z1, Z2, and Z3 independently represent -(CH2)2-, -CH=CH-, -C≡C-, or a covalent bond; Q represents H or F; ℓ is an integer of 1 to 5; m, n, and o are independently an integer of 0 to 5; p and q are independently an integer of 0 or 1; and each element which constitutes the derivatives may be an isotope of the element.
本发明旨在提供具有宽温度范围液晶相、低粘度和大弹性常数比的液晶化合物;包含该化合物的液晶组合物;以及包含该组合物的液晶显示设备;该液晶化合物为通式(1)表示的
氟烯烃衍
生物
其中 A1、A2、A3 和 A4 独立地代表反式-1,4-
环己烯基团或 1,4-亚苯基基团;Z1、Z2 和 Z3 独立地代表-(
CH2)2-、-CH=CH-、-C≡C- 或共价键;Q 代表 H 或 F;ℓ 是 1 至 5 的整数;m、n 和 o 独立地是 0 至 5 的整数;p 和 q 独立地是 0 或 1 的整数;构成衍
生物的每个元素可以是该元素的同位素。