Aveso Displays | Overview

Aveso’s proprietary display technology is based on novel approach to electrochromics, invented by scientists at The Dow Chemical Company. Electrochromism is the term given to a color change in a material caused by the passage of an electric current potential. Traditional electrochromic materials rely on a “redox dye” that must serve as both the redox material and the color-changing agent, resulting in an unsatisfactory tradeoff between contrast, lifetime (number of cycles), and available color sets.

In contrast to traditional electrochromic systems, the Aveso system separates the function of the redox material from the dye. The Aveso system is based on the following electrochemical-chemical principles: (1) a reversible oxidation-reduction (redox) material is used to create a pH gradient; (2) a pH sensitive dye responds to the change in pH, resulting in the formation of a high contrast, reflective image.

By separating the function of the redox material and the dye, Aveso inks provide a novel family of high contrast materials that are inherently stable, processable, and versatile. Further, by requiring only one redox couple for producing the pH change, color selection flexibility and long life are achieved compared to systems that require a new redox couple for each color.

Global patents protect the enabling electro-active ink technology at the core of Aveso, as well as construction and design for printed, passive matrix displays and other device architectures for updateable applications.