Liquid crystalline compounds which exhibit a negative dielectric anisotropy value, have an extremely high voltage holding ratio and a low threshold voltage, are small in their dependency on temperature, hardly exhibit smectic phase, and are excellent in miscibility with other liquid crystal materials at the same time; liquid crystal compositions comprising the compound; and liquid crystal display devices fabricated by using the liquid crystal composition are provided; the liquid crystalline compounds being specific 3,3'-difluorobiphenyl derivatives expressed by the following general formula (1):
本发明提供了具有负介电各向异性值、极高的电压保持率和较低的阈值电压、对温度的依赖性小、几乎不呈现共晶相、同时与其他
液晶材料的混溶性极佳的
液晶化合物;包含该化合物的
液晶组合物;以及使用该
液晶组合物制造的
液晶显示设备;该
液晶化合物是由以下通式(1)表示的特定
3,3'-二氟联苯衍
生物: