High information content liquid crystal screens

Abstract

Retrieval and display of information is an important aspect of the information explosion currently under way. Liquid crystal displays (LCDs) are ideally suited for this purpose, requiring only - I mu W/cm2. After a brief introduction to the electro-optic characteristics of the widely used twisted nematic displays, we discuss methods of multiplexing them, illustrating a new technique developed in our laboratory with n 64 x 64 matrix. We will also discuss some promising new developments which include ferro-electric LCDs which have submicrosecond switching times and the super twisted birefringence efect which have a bistable electro-optic characteristic with an extremely sharp threshold.