Stretchable Printed Circuit Board for Wireless Light-Sensing System

Flexible hybrid electronics (FHE) has the potential to realize flexible and light large-area electronics by integrating the benefits of traditional semiconductor processing. In addition, printable electronics is expected to lead to resource and energy savings. In this study, we have developed stretchable printed circuit boards, with excellent ductility, on which light-emitting diodes (LEDs) and light sensors were mounted to fabricate sheet-type arrays. The technology developed herein for light-sensing systems based on light sources and detectors is expected to be used as a nondestructive method to inspect objects with arbitrary surfaces.