Electro-chromic displays


Electrochromism denotes the characteristic colour change of a material associated with the material’s reduction-oxidation state. The electrochromic polymer that we have investigated most extensively is poly(3,4-ethylenedioxythiophene) (PEDOT) with poly(styrene sulfonate) (PSS) providing the counter ion (PEDOT:PSS). An EC display element consists of at least two conductors, an electrochromic material, and an electrolyte combined on a carrying substrate. The resulting paper display is fully flexible and the printed devices are less than 100 micrometer thick.
Source: Wikipedia