Abstract
Optical composition of a STN LCD with a single polarizer is studied by computer simulations and experiments. It is proved that contrast ratio of a single polarizer LCD strongly depends on it's width of viewing angle, and a high contrast ratio (7 : 1), 1/240 duty multiplex display is achieved, of which viewing angle is widen by optimizing refractive indices along z-axes of the retardation films. Also it is shown that the optimum △ nd of the liquid crystal layer that can display black and white is depends on difference between △ n dispersion of the liquid crystal and that of the retardation film.
