| abstract |
General properties required for liquid crystal compounds, stability to heat, light, etc., small viscosity, refractive index anisotropy value of appropriate size, dielectric anisotropy value of appropriate size and steep Disclosed is a liquid crystal compound having electro-optical properties, a wide temperature range of a nematic phase, and excellent compatibility with other liquid crystal compounds, particularly a liquid crystal compound having a wide temperature range of a nematic phase. A compound represented by formula (1). For example, R 1 and R 2 are alkyl having 1 to 10 carbon atoms; A 1 is trans-1,4-cyclohexylene; A 2 is 2,3-difluoro-1,4-phenylene; X Is fluorine or chlorine; Z 1 and Z 2 are single bonds; and p and q are 0 or 1. [Selection figure] None |