BENZOTHIOPHENE-CONTAINING LIQUID CRYSTALLINE COMPOUND, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE
申请人:JNC Corporation
公开号:EP3305774A1
公开(公告)日:2018-04-11
Provided are a liquid crystal compound satisfying at least one of physical properties such as high stability to heat and light, a high clearing point, a low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, a suitable elastic constant and excellent compatibility with other liquid crystal compounds; 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), R1 is alkyl or the like; ring A1 and ring A2 are independently 1, 4-cyclohexylene, 1,4-phenylene or the like; Z1, Z2 and Z3 are independently a single bond, -CF2O- or the like; X1 is fluorine, chlorine, -CF3 or the like; L1 and L2 are independently hydrogen, fluorine or the like; a and b are independently 0, 1, 2 or 3; and W is a group represented by formula (1a) or formula (1b);
In formula (1a) and formula (1b), L3 to L8 are independently hydrogen, fluorine or the like.
本发明提供了一种液晶化合物,它至少满足以下物理特性中的一项:对热和光的稳定性高、清澈点高、液晶相的最低温度低、粘度小、光学各向异性合适、介电各向异性大、弹性常数合适以及与其他液晶化合物的兼容性好;一种含有该化合物的液晶组合物;以及一种包括该组合物的液晶显示设备。一种化合物用式(1)表示:
在式 (1) 中,R1 是烷基或类似物;环 A1 和环 A2 独立地是 1,4-环己烯、1,4-亚苯基或类似物;Z1、Z2 和 Z3 独立地是单键、-CF2O- 或类似物;X1 是氟、氯、-CF3 或类似物;L1 和 L2 独立地是氢、氟或类似物;a 和 b 独立地是 0、1、2 或 3;W 是式 (1a) 或式 (1b) 所代表的基团;
在式 (1a) 和式 (1b) 中,L3 至 L8 独立地为氢、氟或类似物。