Effect of Frcition Conditions on Pretilt Angle of Liquid Crystal

Xiuyuan Yi , Xinyi Zhang

Department of Physical Education, Nanjing University, Nanjing, 210093, China

Abstract: The response time of the liquid crystal determines the display quality of the material. Pretilt angle is one of the basic characteristics of liquid crystal, which affects the response time of liquid crystal. In this paper, the equipment of Newton Ring Laboratory is used to measure the birefringence of liquid crystal, the pretilt angle of the liquid crystal cell is measured, and the pretilt angle of the liquid crystal cell is measured by the crystal rotation method. When the transmission direction of the linear polarizer is parallel to the scratch, the polarization direction of the incident light is also parallel to the scratch direction, and different liquid crystal prediction angles are obtained by different fractionation conditions. The experimental results show that there is a qualitative relationship between the rubbing direction and the pretilt angle. As the friction depth increases, the friction value of the friction layer surface also increases. When it is necessary to change the pretilt angle of the liquid crystal cell, changing the friction depth has become a new and reasonable choice.

Keywords: Liquid crystal pretilt angle; Fractionatio; Friction direction