摘要
预聚物与正性液晶以适量配比合成的聚合物／液晶复合膜通常呈正型显示，即膜在关态时呈散射态，在开态时呈透射态。然而实验发现，用高的液晶配比合成的膜在适度电压驱动下能呈现反型显示，即这种膜在关态时呈透射态，在适度电压作用下呈散射态。在制膜过程中，如能将液晶做沿面取向处理，则膜的反型效应更加明显。用聚合物／液晶复合膜的反型显示机理，可开发出一系列新的光学显示器件。本实验研究了这种反型模式器件的电光特性，并建立相关的结构模型解释了实验结果。
A normal mode polymer/liquid crystal compound film can be obtained commonly by blending pre polymer with positive liquid crystal at suitable weight ratio. Such a film is in strong light scattering state in the absence of an applied electrical field, and the film become transparent when an electrical field is applied However, it is found that a reverse mode polymer/liquid crystal compound film can be obtained when liquid crystal content in pre polymer is high enough The reverse mode film is transparent in OFF state and become light scattering as an adequate electrical field is applied If the orientation of liquid crystals is aligned parallel to the substrate surfaces during film fabrication process, then a strong reverse effect can be obtained According to the mechanism of the reverse mode, a series of novel optical devices can be prepared In this paper, the electro optical properties of the polymer/liquid crystal compound film are investigated, and the related structure models are established for illustrating the experimental results
出处
《液晶与显示》
CAS
CSCD
1999年第1期12-17,共6页
Chinese Journal of Liquid Crystals and Displays
基金
中国科学院留学经费择优支持回国工作基金
关键词
聚合物
分散液晶
液晶
网络
反型显示模式
电光
polymer dispersed liquid crystals polymer network liquid crystals reverse display mode light scattering
