COMPUTER ANALYSIS OF CHARACTERISTICS OF THIN LC CELLS WITH ANTISYMMETRIC ANGLES OF THE PRE-TILT ON THE ORIENTING SURFACES AT DIFFERENT ANCHORING ENERGIES OF LC MOLECULES AT BORDERS

Abstract

The aim of the work is to carry out a computer simulation of the influence of the values of the pre-tilt angles and the anchoring energy of LC molecules in thin cells with different twist angles of the structure with antisymmetric boundary conditions on their optical and dynamic characteristics. It is shown that an increase in the values of the pretilt angles of the LC molecules on the orienting surfaces of the cells leads to a slight increase in the contrast ratio in the LC cells with spin angles of 0°, 90° and 270°, with a slight change in the total response time of such cells. In LC cells with a twist angle of the structure of 180°, an increase in the value of the pre-tilt angle leads to a decrease in the contrast ratio and a simultaneous increase in the total response time of such devices. At the same time, a decrease in the anchoring energy in thin LC cells with antisymmetric boundary conditions leads to an increase in the total response time of such modulators for all twist angles of the LC structure. However, for different twist angles of the LC structure, the contrast ratio with a decrease in the anchoring energy of LC molecules with substrates behaves in a different way. Thus, for structures with twist angles of 180° and 270°, the contrast ratio of thin LC cells decreases significantly with the anchoring energy, while for structures with twist angles of 0° and 90°, the contrast ratio increases slightly with decreasing the anchoring energy.

Keywords

• liquid crystal
• modeling
• boundary conditions