| abstract |
High stability against heat and light, high clearing point (or high maximum temperature), low minimum temperature of liquid crystal phase, small viscosity, appropriate optical anisotropy, large dielectric anisotropy, suitable elastic constant, Provided are a liquid crystal compound satisfying at least one of physical properties such as good compatibility with other liquid crystal compounds, a liquid crystal composition containing the compound, and a liquid crystal display device including the composition. A compound represented by formula (1), a liquid crystal composition containing the compound, and a liquid crystal display device including the composition. (R a and R b are each independently alkyl, etc .; Ring A 1 to Ring A 3 are each independently 1,4-cyclohexylene, 1,4-phenylene, etc .; Z 1 to Z 3 are each independently A single bond, alkylene, etc .; L 1 to L 4 are each independently F, Cl, CF 3, etc .; a to c are each independently an integer of 0 to 2) [Selection figure] None |