COMPOUND HAVING SATURATED SIX-MEMBERED RING AND ALKOXY GROUP OR ALKOXYALKYL GROUP, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY ELEMENT

摘要

Provided is a liquid crystal compound satisfying at least one of physical properties such as high stability to light or the like, a high clearing point, low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy and large dielectric anisotropy, a liquid crystal composition containing the compound, and a liquid crystal display device including the composition. A compound is represented by formula (1). In formula (1), for example, R 1 is alkyl having 1 to 12 carbons; ring A 1 , ring A 2 and ring A 3 are independently in which, X 1 and X 2 are independently -O- or -CH 2 -; Y 1 is fluorine, -CF3 or -OCF 3 ; Z 1 and Z 3 are independently a single bond, -CF 2 O- or -COO-; Z 2 is a single bond, -CF 2 O- or -COO-; L 1 and L 2 are independently hydrogen or halogen; a is 0, 1, 2 or 3; and n 1 and n 2 are independently 0, 1 or 2.