Patent ID: 10100251

Abstract:
The invention provides a liquid crystal compound satisfying at least one of physical properties such as a high stability to heat or light, a high clearing point (or a high maximum temperature), a low minimum temperature of a liquid crystal phase, a small viscosity, a suitable optical anisotropy, a small dielectric anisotropy, a suitable elastic constant and a good compatibility with other liquid crystal compounds, a liquid crystal composition including this compound, and a liquid crystal display device containing this composition. The invention provides a compound represented by formula (1): where R1 and R2 is alkyl having 1 to 20 carbons or the like; one of L1 and L2 is both hydrogens, and the other is both fluorines; Z1 and Z2 are independently a single bond, —COO—, —OCO—, —OCH2—, —CH2O—, —CF2O—, —OCF2—, —CH2CH2—, —CH═CH—, —C≡C— or the like.