Viewing‐angle magnification in a TN‐LCD with an ultra‐super‐twisted liquid‐crystal compensator

Abstract

Abstract— The viewing‐angle characteristics of a TN‐LCD were improved by inserting an ultra‐super‐twisted (UST) liquid‐crystal compensating layer between the TN cell and one of the polarizers. The viewing‐angle characteristics of the LCD could be controlled by changing the optical conditions of the UST layer, such as the retardation, the dUST/p value, and the twist sense. The improved viewing‐angle characteristics were confirmed by a TFT‐addressed LCD developed on the basis of this novel cell construction.

P-228L: Late-News Poster: Controllable Viewing-Angle Displays using a Hybrid Aligned Nematic Liquid Crystal Cell

“…An optical system for the controllable viewing-angle LCD has been suggested [2], using an ultra-super twisted cell [3] and a polymer network liquid crystal cell [4]. This system can switch between wide viewing-angle mode and narrow viewing-angle mode.…”