| abstract |
An object is to provide a liquid crystal compound satisfying at least one of physical properties such as a high stability to heat, light and so forth, a high clearing point, a low minimum temperature of a liquid crystal phase, a small viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a suitable elastic constant and an excellent compatibility with other liquid crystal compounds, a liquid crystal composition containing the compound, and a liquid crystal display device including the composition. n A solution is the compound represented by formula (1): n n n n n n n n n n wherein, in formula (1),n nfor example, R 1 is alkyl having 1 to 10 carbons; ring A 1 and ring A 2 are independently 1,4-cyclohexylene or 1,4-phenylene; Z 1 and Z 2 are independently a single bond or —CF 2 O—; L 1 and L 2 are halogen; and a is 1 or 2. |