ORTHO ESTER DERIVATIVE, LIQUID CRYSTAL COMPOSITION, AND LIQUID CRYSTAL DISPLAY ELEMENT
申请人:JNC Corporation
公开号:EP2690103A1
公开(公告)日:2014-01-29
The invention is to provide a liquid crystal compound having a large dielectric anisotropy, a high voltage holding ratio and stability to heat, light and so forth, maintaining a nematic phase in a wide temperature range, having a suitable optical anisotropy and an excellent compatibility with other liquid crystal compounds, particularly, to provide a liquid crystal compound having a large dielectric anisotropy. The invention provides compound (1):
In the formula, for example, R1 is alkyl and having 1 to 20 carbons; ring A1, ring A2, ring A3, ring A4, ring A5 and ring A6 are independently 1,4-cyclohexylene or 1,4-phenylene; Z1, Z2, Z3, Z4, Z5, Z6 and Z7 are independently a single bond, - (CH2) 2-, -COO-, -OCO-, CF2O-, -OCF2- or -CH=CH-; X1 is fluorine, -CF3 or -OCF3; and Y1 and Y2 are independently hydrogen or fluorine.
本发明旨在提供一种液晶化合物,它具有较大的介电各向异性、较高的电压保持比和对热、光等的稳定性,在较宽的温度范围内保持向列相,具有合适的光学各向异性,与其他液晶化合物具有良好的相容性,特别是提供一种具有较大介电各向异性的液晶化合物。本发明提供了化合物(1):
例如,在式中,R1 是烷基,具有 1 至 20 个碳原子;环 A1、环 A2、环 A3、环 A4、环 A5 和环 A6 独立地是 1,4-
环己烯或 1,4-亚苯基;Z1、Z2、Z3、Z4、Z5、Z6 和 Z7 独立地为单键、- (
CH2)2-、-COO-、-OCO-、
CF2O-、-O
CF2- 或 -CH=CH-;X1 为
氟、-
CF3 或 -O ;以及 Y1 和 Y2 独立地为氢或
氟。