Flexible Micro Light-Emitting Diodes for Wearable Applications

Inorganic-based micro light-emitting diodes (mu LEDs) have been considered to substitute the conventional displays, because of their outstanding properties. The mu LED applications are widely extending to various fields, such as augmented reality (AR), smart and biomedical devices. Furthermore, flexible mu LEDs have been extensively investigated by several researchers for user-friendly optoelectronics. However, the mu LEDs stability in harsh environments were not significantly investigated yet. Here, we realized wearable mu LEDs using simple and rapid mu LED fabrication process. Flexible mu LEDs have excellent mechanical, thermal, humid, and photo stability in various environmental conditions. Finally, wearable mu LED array was achieved on a general cloth.