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Journal Article
Stretchable OLEDs based on a hidden active area for high fill factor and resolution compensation
- Authors
- Donggyun Lee, Su-Bon Kim, Taehyun Kim, Dongho Choi, Jee Hoon Sim, Woochan Lee, Hyunsu Cho, Jong-Heon Yang, Junho Kim, Sangin Hahn, Hanul Moon, Seunghyup Yoo
- Issue Date
- 2024-06
- Citation
- Nature Communications, v.15, pp.1-13
- ISSN
- 2041-1723
- Publisher
- Nature Publishing Group
- Language
- English
- Type
- Journal Article
- Abstract
- Stretchable organic light-emitting diodes (OLEDs) have emerged as promising optoelectronic devices with exceptional degree of freedom in form factors. However, stretching OLEDs often results in a reduction in the geometrical fill factor (FF), that is the ratio of an active area to the total area, thereby limiting their potential for a broad range of applications. To overcome these challenges, we propose a three-dimensional (3D) architecture adopting a hidden active area that serves a dual role as both an emitting area and an interconnector. For this purpose, an ultrathin OLED is first attached to a 3D rigid island array structure through quadaxial stretching for precise, deformation-free alignment. A portion of the ultrathin OLED is concealed by letting it ‘fold in’ between the adjacent islands in the initial, non-stretched condition and gradually surfaces to the top upon stretching. This design enables the proposed stretchable OLEDs to exhibit a relatively high FF not only in the initial state but also after substantial deformation corresponding to a 30% biaxial system strain. Moreover, passive-matrix OLED displays that utilize this architecture are shown to be configurable for compensation of post-stretch resolution loss, demonstrating the efficacy of the proposed approach in realizing the full potential of stretchable OLEDs.
- KSP Keywords
- Active area, Biaxial system, Degrees of freedom(DOF), Dual role, Fill factor(F.F.), Form factor, High fill factor, OLED displays, Optoelectronic devices, Three dimensional(3D), array structure
This work is distributed under the term of Creative Commons License (CCL)
(CC BY)
(CC BY)
