采用球形液晶微滴均匀分布在聚合物中的物理模型，导出了PDLC膜的介电常数和电场强度的表达式，得到液晶微滴内的电场为均匀电场且方向与外加电场方向一致。讨论了材料的平均介电常数和电导率、外加电场的频率以及液晶微滴的体积比对液晶微滴内电场的影响。
Dielectric constant and electrical field distribution are deducedwith a physical model assuming that ball-shaped liquid crystal microdroplets are homogeneously distributed in the polymer without any interaction. The result shows that the electrical field within liquid crystals is uniform and its direction is the same as that of the impressed electrical field. It further discussed with respect to the average dielectric constant, resistance of liquid crystal and polymer, angle frequency of impressed electrical field and the volume ratio of LC to polymer.
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