Electrochromic Display

This chapter provides a brief review of electrochromic (EC) materials and displays toward full-color reflective display and e-paper. It includes the mechanism, characteristics, and recent progress of various EC materials and future applications in addition to display to clarify the advantages of Electrochromic Displays (ECDs). The electrochemical reduction of a reducible material on one electrode should be accompanied by electrochemical oxidation of an oxidizable material on the other electrode with an equivalent amount of charge. Low energy consumption driving can be achieved by developing high EC efficiency inorganic EC materials and improving the cell structure. Recently, increasing research efforts have been dedicated to the EC of organic compounds such as dyes, metal complexes, and conductive polymers from the viewpoint of multicolor and coloration efficiency. Conducting polymers have been a focal prospect for film formation, multicolor property, and EC efficiency.