abstract |
A liquid crystal composition having a low threshold voltage and a suitably large optical anisotropy, while retaining a high specific resistance value, is provided, n which composition is composed of compounds expressed by the formulas (1), (2) and (4):n n wherein R¹, R² and R⁴ each represent an alkyl group of 1 to 10C; n represents 0 or 1; A¹, A², A³ and A⁴ represent trans-1,4-cyclohexylene or 1,4-phenylene; Z¹, Z³ and Z⁴ represent -C₂H₄- or a single bond; and X¹, X⁴ and X⁵ represent H or F, n use of which composition can realize an active matrix type liquid crystal display element of a low voltage drive, a low power consumption and a high speed response. |