液晶盒的电容特性  

Capacitance Characteristics of Liquid Crystal Cell

作　　者：刘晓芳[1] 崔文静[1] 邢红玉[1] 叶文江[1] 张志东[1] 

机构地区：[1]河北工业大学理学院,天津300401

出　　处：《现代显示》2012年第8期25-28,共4页Advanced Display

基　　金：河北省教育厅项目(No.Z2011133);国家自然科学基金(No.11147103);河北省高校重点学科资助项目

摘　　要：液晶盒外加一定的电压,会改变液晶分子的取向排列,这样液晶层的有效介电常数也会随之发生改变。如果把液晶盒看作一个电容器,其电容也会有所改变。本论文理论研究强锚泊混合排列向列相液晶盒的电容特性,基于液晶弹性理论和变分原理,理论推导液晶盒系统的平衡态方程及电容的解析表达式,通过Matlab软件数值模拟了此液晶盒的电容-电压曲线和指向矢分布曲线,并对其电容特性进行了分析。The certain voltage applied to the liquid crystal can change the orientation of liquid crystal molecules, which results in the change of the effective dielectric constant. If the liquid crystal cell may be seen as a capacitor, the capacitance of this cell will also vary. In this paper, the capacitance characteristics of strong anchoring hybrid-aligned nematic liquid crystal cell are studied theoretically. Based on liquid crystal elasticity theory and variational principles, the equilibrium equations and the analytical expression of the capacitance of this cell are deduced theoretically. The capacitance-voltage curves and the distribution of director of this cell are simulated numerically by using the Matlab software, through which the capacitance characteristics of this cell is analyzed.

关 键 词：电容特性 混合排列向列相 有效介电常数 

分 类 号：O753.2[理学—晶体学] TM532.5[电气工程—电器]