npj Flexible Electronics ( IF 12.3 ) Pub Date : 2024-03-09 , DOI: 10.1038/s41528-024-00303-5 Minwoo Nam , Jaehyeock Chang , Hagseon Kim , Young Hyun Son , Yongmin Jeon , Jeong Hyun Kwon , Kyung Cheol Choi
Stretchable displays attract significant attention because of their potential applications in wearable electronics, smart textiles, and human-conformable devices. This paper introduces an electrically stable, mechanically ultra-robust, and water-resistant stretchable OLED display (SOLED) mounted on a stress-relief pillar platform. The SOLED is fabricated on a thin, transparent polyethylene terephthalate (PET) film using conventional vacuum evaporation, organic-inorganic hybrid thin film encapsulation (TFE), and a nonselective laser patterning process. This simple and efficient process yields an OLED display with exceptional stretchability, reaching up to 95% strain and outstanding durability, enduring 100,000 stretch-release cycles at 50% strain. Operational lifetime and water-resistant storage lifetime measurements confirm that the TFE provides effective protection even after the nonselective laser patterning process. A 3 × 3 array SOLED display module mounted on a stress-relief pillar platform is successfully implemented, marking the first case of water-resistant display array operation in the field of SOLEDs. This work aims to develop practical stretchable displays by offering a reliable fabrication method and device design for creating mechanically robust and adaptable displays, potentially paving the way for future advances in human-conformable electronics and other innovative applications.
中文翻译:
基于简便图案化方法的高度可靠且可拉伸的OLED:迈向可拉伸有机光电器件
可拉伸显示器因其在可穿戴电子产品、智能纺织品和人体舒适设备中的潜在应用而引起了广泛关注。本文介绍了一种安装在应力消除支柱平台上的电气稳定、机械超坚固且防水的可拉伸 OLED 显示器 (SOLED)。 SOLED 采用传统真空蒸发、有机-无机混合薄膜封装 (TFE) 和非选择性激光图案化工艺在薄而透明的聚对苯二甲酸乙二醇酯 (PET) 薄膜上制造。这种简单而高效的工艺使 OLED 显示器具有卓越的拉伸性,可达到高达 95% 的应变,并且具有出色的耐用性,可在 50% 的应变下承受 100,000 次拉伸释放循环。使用寿命和防水存储寿命测量证实,即使在非选择性激光图案化过程之后,TFE 也能提供有效的保护。成功实现了安装在应力消除柱平台上的3×3阵列SOLED显示模块,标志着SOLED领域防水显示阵列操作的首例。这项工作旨在通过提供可靠的制造方法和设备设计来开发实用的可拉伸显示器,以创建机械坚固且适应性强的显示器,从而可能为人体舒适电子和其他创新应用的未来进步铺平道路。