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- Title
Flexible displays for smart clothing: Part II-- Electrochromic displays.
- Authors
Meunier, Ludivine; Kelly, Fern M.; Cochrane, Cédric; Koncar, Vladan
- Abstract
Chromic materials have the ability to change their colour reversibly according to external environmental conditions. They are categorized by the stimulus that triggers the colour change. For example, thermochromic materials can be defined as those in which a colour change is induced by a change in temperature and electrochromic materials are those in which colour change is induced when an electrical current is applied. Thermochromism is already a well-known application within the textile field, however electrochromism is not as common. In this paper, an overview of the field of electrochromic devices has been presented and the successful development of a first generation flexible textile electrochromic device achieved by ourselves is discussed. The flexible electrochromic textile display consists of a novel 4-layer sandwich structure containing a thin spacer fabric with electrochromic compound (Prussian blue), a conductive layer and two electrodes; bottom and upper (transparent). If powered with a low voltage battery, this structure is able to generate a reversible colour change. The switching times have been measured at ∼ 5 s and 4.5 V. The colour changes are monitored via CIE L*, a*, b* values.been used in the production of textile-based flexible displays and screens. The paper covers textile displays based on optical fibres for the use in communicative clothing, fashion or medical applications: large flexible screens based on flexible ribbons and LEDs to make or to create communicative clothing; and low cost, washable 'textronics' produced by combining SMD components with textile materials for the production of light-producing multilayered OLED flexible structures. For each technology covered in the review, the examples from the commercial products or from the products under research have been considered to illustrate the concept and its potential application
- Subjects
CONDUCTING polymers; ELECTROCHROMIC devices; CHROMIC materials; THERMOCHROMISM; PRUSSIAN blue
- Publication
Indian Journal of Fibre & Textile Research, 2011, Vol 36, Issue 4, p429
- ISSN
0971-0426
- Publication type
Article