Imperceptibly micro-wrinkled organic light-emitting diodes for distortion-free stretchable display applications

Sujin Jeong; Hyungsoo Yoon; Byeongmoon Lee; Yongtaek Hong

doi:10.1117/12.2567621

20 August 2020 Imperceptibly micro-wrinkled organic light-emitting diodes for distortion-free stretchable display applications

Sujin Jeong, Hyungsoo Yoon, Byeongmoon Lee, Yongtaek Hong

Author Affiliations +

Proceedings Volume 11473, Organic and Hybrid Light Emitting Materials and Devices XXIV; 114731M (2020) https://doi.org/10.1117/12.2567621
Event: SPIE Organic Photonics + Electronics, 2020, Online Only

Conference Poster

Abstract

We report imperceptibly micro-wrinkled organic light-emitting diodes (OLEDs) to define distortion-free pixel by in-situ deposition on two-dimensionally pre-stretched polydimethylsiloxane (PDMS) substrate. The developed fabrication process includes surface engineering for a low-temperature solution process. After releasing the pre-strain, a micro-wrinkled structure facilitates to maintain the clear shape of the pixel with the wrinkle period under 20 µm that is unrecognizable to the human eyes, whereas wrinkles of hundreds of µm are formed when using plastic films. The micro-wrinkled OLEDs show a luminance over 8,000 cd/m2, a maximum current efficiency of 7 cd/A and can endure two-dimensional 20% strain. Our in-situ fabrication method can become a new framework for stretchable OLEDs with simple and low-cost fabrication with improved visibility.

Citation Download Citation

Sujin Jeong, Hyungsoo Yoon, Byeongmoon Lee, and Yongtaek Hong "Imperceptibly micro-wrinkled organic light-emitting diodes for distortion-free stretchable display applications", Proc. SPIE 11473, Organic and Hybrid Light Emitting Materials and Devices XXIV, 114731M (20 August 2020); https://doi.org/10.1117/12.2567621

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