Fully Flexible All-in-One Electronic Display Skin with Seamless Integration of MicroLED and Hydrogel Battery

Visualization is a cornerstone in human-computer interaction, evolving from large screens to mobile devices and now to wearable display technology. However, conventional batteries and displays lack the softness and stretchability inherent to human skin. Here, a fully flexible, all-in-one electronic display skin by integrating a flexible microLED display, a stretchable circuit, and a Zn|PAM|V2O5 hydrogel battery pack is developed. Vapor-phase bulk transfer is used to efficiently and accurately transfer 10 000 microLEDs onto a flexible substrate, ensuring high flexibility and ultra-thin (240 mu m). The flexible hydrogel battery pack provides sustainable energy, with a high specific capacity of 331.3 mAh g-1. Additionally, a transparent stretchable circuit board (maximum stretch 40%) is made by 3D printing technology. The skin display exhibited exceptional stretchability and biocompatibility, conforming to movements while maintaining high-resolution dynamic visual outputs. These innovations pave the way for advanced skin-implanted displays, promising transformative applications in information interaction, healthcare, and artificial intelligence. A fully flexible all-in-one electronic display skin is created. The hydrogel battery and 3D-printed stretchable circuit provide energy and electrical connections to the microLED display. The fully flexible electronic display skin is ultra-thin, high-resolution, and highly stretchable. This innovation could revolutionize wearable technology for use in healthcare, AI, and information interaction. image