ANALYTICAL SIMULATION OF ELECTROOPTICAL PERFORMANCE OF AMORPHOUS TWISTED NEMATIC LIQUID-CRYSTAL DISPLAYS

A simulation of the electrooptical (EO) performance of an amorphous tw isted nematic liquid crystal display (a-TN-LCD) has been performed. Th e a-TN-LCDs are prepared by filling chiral-molecule-doped NLCs into em pty cells in the isotropic phase and cooling them to room temperature; the inner surfaces of the cells are topographically and optically hom ogeneous and no rubbing is performed. The a-TN-LCDs exhibit wide and u niform viewing angle characteristics and suitable EO performance for g ray-scale operation, in comparison with those of conventional TN-LCDs. These characteristics of the a-TN-LCD are successfully reproduced and explained by computer simulation.