Flexible printed circuit manufacturing process is a complicated one. Multilayer flex refers to flexible circuits with three or even more layers of conductors. These circuits are difficult to make ...

This flexible printed circuit from UK-based Trackwise, which measures 26 meters (85 feet) long, is the main power/signal bus for a solar-powered UAV.

Building electronics in unconventional form factors with high packaging density is possible thanks to three-dimensional circuit designs using flex and rigid-flex printed circuit boards (PCBs).