公开(公告)号：US09790427B2

公开(公告)日：2017-10-17

申请号：US15015955

申请日：2016-02-04

Applicant: JNC CORPORATION ,  JNC PETROCHEMICAL CORPORATION

Inventor： Teizi Satou ,  Sakura Tachinami

IPC: C09K19/34 ,  C07D309/20 ,  C07D309/22 ,  C07D407/04 ,  C07F7/08 ,  C07D407/10

CPC classification number: C09K19/3458 ,  C07D309/20 ,  C07D309/22 ,  C07D407/04 ,  C07D407/10 ,  C07F7/0896 ,  C09K19/3402 ,  C09K2019/3422 ,  C09K2019/3425

Abstract: A liquid crystal compound is provided that satisfies at least one physical property, such as high stability to heat and light, a high clearing point (or high maximum temperature), a low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, a suitable elastic constant and good compatibility with other liquid crystal compounds, a liquid crystal composition containing the compound, and a liquid crystal display device including the composition. The liquid crystal compound is represented by formula (1): in which, Ra and Rb are alkyl having 1 to 10 carbons; ring A1, ring A2 and ring A3 are 1,4-cyclohexylene, 1,4-phenylene; and ring N1 is 2,3-difluoro-1,4-phenylene; G is a divalent group represented by formula (pr-1) or (pr-2); in which, Z1, Z2, Z3 and Z4 are a single bond; and a, b and c are 0, 1 or 2.