Electrochromic Display for Full-color Electronic Paper

Abstract

Electrochromic materials, which show reversible color change by electronic stimuli, have been attracting significant interest for potential uses in a paper-like electronic imaging device. Many researches have been extensively focused on viologen or conductive polymers such as PEDOT, as typical organic electrochromic materials. However, they are relatively restricted in the color electrochemically induced. Electrochemical materials showing color changes from clear to the three primary colors such as RGB or CMY should be required to realize full-color electronic paper. In this review, we mainly described electrochromic characteristics of phthalate derivatives from the view point of its color for full-color electronic paper. Advanced technical topics on electrochromic displays are also mentioned.