Flexible transparent electrochromic display with fine pixels

Chunyang Su; Yan-Hua Liu

doi:10.1117/12.2647938

23 January 2023 Flexible transparent electrochromic display with fine pixels

Chunyang Su, Yan-Hua Liu

Proceedings Volume 12556, AOPC 2022: Optoelectronics and Nanophotonics; 125561I (2023) https://doi.org/10.1117/12.2647938
Event: Applied Optics and Photonics China 2022 (AOPC2022), 2022, Beijing, China

Abstract

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.

Citation Download Citation

Chunyang Su and Yan-Hua Liu "Flexible transparent electrochromic display with fine pixels", Proc. SPIE 12556, AOPC 2022: Optoelectronics and Nanophotonics, 125561I (23 January 2023); https://doi.org/10.1117/12.2647938

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KEYWORDS

Flexible displays

Optical lithography

Ions

Display technology

Electrodes

Transmittance

Ultraviolet radiation

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