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Printable All-Organic Electrochromic Active-Matrix Displays
RISE, Swedish ICT, Acreo.
2007 (English)In: Advanced Functional Materials, ISSN 1616-301X, E-ISSN 1616-3028, Vol. 17, no 16, p. 3074-Article in journal (Refereed) Published
Abstract [en]

All-organic active matrix addressed displays based on electrochemical smart pixels made on flexible substrates are reported. Each individual smart pixel device combines an electrochemical transistor with an electrochromic display cell, thus resulting in a low-voltage operating robust display technology. Poly(3,4-ethylenedioxythiophene) (PEDOT) doped with poly(styrenesulfonate) (PSS) served as the active material in the electrochemical smart pixels, as well as the conducting lines, of the monolithically integrated active-matrix display. Different active-matrix display addressing schemes have been investigated a matrix display fill factor of 65€‰% was reached. This is achieved by combining a three-terminal electrochemical transistor with an electrochromic display cell architecture, in which an additional layer of PEDOT:PSS was placed on top of the display cell counter electrode. In addition, we have evaluated different kinds of electrochromic polymer materials aiming at reaching a high color switch contrast. This work has been carried out in the light of achieving a robust display technology that is easily manufactured using a standard label printing press, which forced us to use the fewest different materials as well as avoiding exotic complex device architectures. Together, this yields a manufacturing process of only five discrete patterning steps, which in turn promise for that the active matrix addressed displays can be manufactured on paper or plastic substrates in a roll-to-roll production procedure._x000D_

Place, publisher, year, edition, pages
2007. Vol. 17, no 16, p. 3074-
Keyword [en]
Displays, electrochromic materials, Electronic paper
National Category
Computer and Information Sciences
Identifiers
URN: urn:nbn:se:ri:diva-32153OAI: oai:DiVA.org:ri-32153DiVA, id: diva2:1152012
Available from: 2017-10-24 Created: 2017-10-24 Last updated: 2018-01-13Bibliographically approved

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