LIQUID CRYSTAL COMPOUND, LIQUID CRYSTAL COMPOSITION, AND LIQUID CRYSTAL DISPLAY ELEMENT
申请人:JNC Corporation
公开号:EP2960226A1
公开(公告)日:2015-12-30
To provide a liquid crystal compound satisfying at least one of physical properties such as high stability to light, a high clearing point, a low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, a large dielectric constant in a minor axis direction, a suitable elastic constant and excellent compatibility; a liquid crystal composition containing the compound; and a liquid crystal display device including the composition. The compound is represented by formula (1):
wherein, for example, R1 is alkyl having 1 to 15 carbons, ring A1 to ring A4 are 1,4-cyclohexylene or 1,4-phenylene, at least one of Z1 to Z4 is -CF2O-, the remainder and W1 are a single bond, - (CH2)2-, -COO- or -CH2O-, X1 is halogen, -C=N, -CF3 or -OCF3, L1 and L2 are hydrogen or fluorine, Y1 and Y2 are fluorine; and a, b, c and d are 0 or 1, and a sum thereof is 1 or 2.
提供一种液晶化合物,它至少满足以下物理特性之一:对光稳定性高、清澈点高、液晶相最低温度低、粘度小、适当的光学各向异性、介电各向异性大、小轴方向介电常数大、适当的弹性常数和出色的兼容性;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。该化合物用式(1)表示:
其中,例如,R1 是具有 1 至 15 个碳原子的烷基,环 A1 至环 A4 是 1,4-环己烯或 1,4-亚苯基,Z1 至 Z4 中至少有一个是 -CF2O-,其余和 W1 是单键、-(CH2)2-、-COO- 或 -CH2O-,X1 是卤素、-C=N、-CF3 或 -OCF3,L1 和 L2 是氢或氟,Y1 和 Y2 是氟;a、b、c 和 d 为 0 或 1,其总和为 1 或 2。