| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a liquid crystalline compound having high stability to heat, light or the like, a high clearing point, a low minimum temperature of a liquid crystal phase, a low viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a suitable elastic constant and excellent compatibility with other liquid crystalline compounds, and to provide a liquid crystal composition containing the compound and a liquid crystal display element including the composition.SOLUTION: There is provided a compound represented by the formula (1-1): where, for example, Ris an alkyl having 1 to 10 carbon atoms or an alkenyl having 1 to 10 carbon atoms; Ris an alkyl having 1 to 10 carbon atoms, an alkoxy having 1 to 9 carbon atoms or an alkenyl having 3 to 10 carbon atoms; a ring Ais 1,4-cyclohexylene or 1,4-phenylene; a ring Ais 1,4-cyclohexylene, 1,4-phenylene or 2,3-difluoro-1,4-phenylene; Zand Zare a single bond; Land Lare fluorine; and l is 0, 1 or 2.</p> |
