Cholesteric Emulsions for Colored Displays

Abstract

A new colored electro-optical film obtained by means of an oriented cholesteric liquid crystal (LC) confined in droplets dispersed in an organic-monomer matrix is presented. The cholesteric LC pitch can be adjusted using a photosensitive chiral material in order to produce the three primary reflected colors (see Figure). Morphology, response times (τON and τOFF), and reflection spectra of such films are reported.