液晶电光特性研究

随着近几年液晶显示技术在诸多领域的广泛应用和新技术的推出，人们一直致力于改善液晶器件显示性能的研究。在液晶显示器应用中,电光特性是一个很重要的参数,介绍了采用激光测量的方法获得液晶的电光特性、阈值电压及视角特性。分析了液晶分子在交流电场作用下重新取向后的扭曲特性，测试了不同电压下液晶分子的透光率和扭曲角度，结果表明:该方法是可行的，向列相液晶具有0.92 V较低阈值电压和较为陡峭的电光曲线，水平方向上在-60~+50有较好的视角特性，垂直方向上在-40~+20有较好的视角特性。该结论为偏光器件的设计与制作提供了依据。

Electro-optic characteristic of liquid crystal

With the wide application of liquid crystal display technique in most fields and the promotion of new technologies in recent years, much endeavor has been made to improve its performance. The photoelectric characteristic is an important parameter in the application of liquid crystal devices. The electro-optical properties, threshold voltage and viewing angle of liquid crystal were studied by using laser measurement, and the distortion characteristics of liquid crystal molecules affected by the alternating electric field after re-orientation were analyzed. The twist angle of liquid crystal molecules and transmittance under different voltage conditions were also tested. The results show that this method is feasible. The twisted nematic liquid crystal has 0.92 V lower threshold voltage and relatively steep electro-optical curve, and it possessed good view angle properties from -60° to +50° in the horizontal direction and from -40° to +20° in the vertical direction. The conclusion provides scientific basis for the design and manufacture of polarizer.