The experimental results also prove that the existence of the siloxane cyclic structure can not only enlarge the temperature range of mesomorphic state in the LC compound, but also be favorable for the LC molecular orientation. 实验结果证明在这类液晶化合物中存在环状结构的硅氧烷不仅扩大了液晶态的温度范围,而且还有利于液晶分子的取向。