Multicolor Electrochromic Displays Exploratory Development.

摘要

Multicolor electrochromic cells using a rare-earth diphthalocyanine as the switchable material offer advantages over other flat-panel technologies for several types of information displays. This exploratory development effort addressed the issues of cycle life, red-color improvement, and counter-electrode performance. Major increases in the orange/green or orange/blue-green cycle life of lutetium diphthalocyanine electrodes in aqueous chloride electrolytes were achieved, respectively, by the use of Nafion binder on the dye film and by incorporation of 2-acrylamido-2-methylpropanesulfonic acid (AMPS) in the liquid electrolyte. Three failure modes were identified from changes in the switching charge and absorption spectra that occurred during long-term voltage-pulse cycling. Electrochromic; Phthalocyanines; Rare earths; Displays; Cycle life; Color; Aircraft; Large screen; Display screens. (JES)