Discrete-time system model of liquid-crystal response in active matrix drive

Abstract

A discrete-time system model was used best to describe the response characteristics of a liquid crystal device with an active matrix drive. There are two contributions to the response characteristics. The first one is associated with the active matrix drive. It depends on the electrical displacement vs. voltage characteristics of the liquid crystal cell. A simple expression for a high voltage region was obtained. The other is caused by the slow response of the liquid crystal itself, which is understood well by using a first-order delay system.