Mr. Chunyang Su Profile

Chunyang Su

at Soochow Univ

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Proceedings Article | 23 January 2023 Paper

Flexible transparent electrochromic display with fine pixels

Chunyang Su, Yan-Hua Liu

Proceedings Volume 12556, 125561I (2023) https://doi.org/10.1117/12.2647938

KEYWORDS: Flexible displays, Optical lithography, Ions, Electrodes, Display technology, Ultraviolet radiation, Transmittance

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Multicolor electrochromic materials and devices have been studied widely. However, typical electrochromic materials cannot be processed graphically, which limits their pixelation. This paper demonstrates a flexible pixeled electrochromic device formed by patterning the electrochromic layer though lithography technology. Under the directional exposure of the ultraviolet, the exposed region of the electrochromic material layer (light-curing electrochromic material based on the electro-acid mechanism) is cured into a film, which is directly realized as electrochromic materials patterning. In this paper, the patterned flexible large-area (100cm2 ) display device is successfully demonstrated with high optical contrast (~30%), in which the coloring and bleaching processes of a single pixel (16mm2 ) were 0.8s and 1s, respectively. Electrochromic material patterning can simplify the manufacturing process and realize display pixel, which opens a new way for the next generation of flexible and colorful electrochromic display devices.

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