| abstract |
The present invention provides a liquid crystalline compound that sufficiently satisfies at least one of physical properties such as high stability to heat or light, high clearing point (or high upper limit temperature), low lower limit temperature of liquid crystal phase, low viscosity, appropriate optical anisotropy, large dielectric anisotropy, appropriate elastic constant, and excellent compatibility with other liquid crystalline compounds, a liquid crystal composition containing the compound, and a liquid crystal display element containing the composition. Liquid crystallinity of the present inventionThe compound is represented by formula (1). In the formula (1), R 1 Hydrogen, fluorine, alkyl, etc.; ring A 1 And ring A 2 Independently 1, 4-cyclohexylene, 1, 4-phenylene, etc.; z 1 、Z 2 And Z 3 Independently a single bond, -COO-, etc.; x 1 Is hydrogen, fluorine, -CF 3 or-OCF 3 ；L 1 And L 2 Independently hydrogen or fluorine: a is 0 or 1, and b is 0 or 1. |