| abstract |
A heat has stability to such light, a broad temperature range becomes a nematic phase, a small viscosity, a large optical anisotropy, and a suitable elastic constant K 33, further higher negative dielectric Provided is a liquid crystal compound having anisotropy and excellent compatibility with other liquid crystal compounds. A compound (1) is used. For example, R 1 and R 2 are hydrogen, alkyl having 1 to 10 carbons, alkenyl having 2 to 10 carbons, alkoxy having 1 to 9 carbons, alkoxyalkyl having 2 to 9 carbons, or 2 to 9 carbons One of ring A 1 , ring A 2 , and ring A 3 is 1,4-phenylene or 2,3-difluoro-1,4-phenylene, and the other two are 1,4 - be xylene or 1,4-cyclohexylene cyclohexylene; Z 1 is a single bond, - (CH 2) 2 - , - CH 2 O -, - OCH 2 -, - COO-, or -OCO- in is there. [Selection figure] None |