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用聚合分相法，在Ｅ－ ７ 液晶中掺入二色性液晶分散蓝，制成聚合物分散液晶膜。测定了它的光电性能。与不加二色性染料的聚合物分散液晶膜比较，膜对比度提高，响应时间τｏｎ 保持不变，松弛时间τｏｆｆ 略有增加。
The polymer-dispersed liquid crystal film was prepared by incorporating the dichroic liquid crystal dispersion blue in the E-7 liquid crystal by the polymerization separation method. Its optical properties were measured. Compared with the polymer-dispersed liquid crystal film without dichroic dye, the film contrast is improved, the response time τon remains unchanged, and the relaxation time τoff increases slightly.