Polymer-Dispersed Liquid Crystals

Abstract

Polymer-dispersed liquid crystals (PDLCs) are electrooptic materials that modulate light through electrical control of the refractive index similar to other liquid devices. Like dynamic scattering and smectic displays, PDLCs switch between scattering and clear states. PDLC-type devices consist of droplets of low-molecular weight liquid crystals dispersed in a solid polymer binder. They do not require polarizers and have a number of other unique advantages: ease of fabrication, suitability for large area devices, environmental stability and fast switching speeds. PDLCs may be tailored for a wide variety of applications, ranging from architectural glass to projection TV and shutters for infrared video cameras.