3D Bendable Printed Circuit Board With Redundant Interconnections

摘要

A rigid-flex PCB includes an array of rigid PCB “islands” interconnected by a flexible PCB formed into flexible connectors. The conductive and insulating layers of the flexible PCB extend into the rigid PCBs, giving the electrical connections to the rigid PCBs added resistance to breakage as the rigid-flex PCB is repeatedly stressed by bending and twisting forces. In addition, the durability of the rigid-flex PCB is enhanced by making the power and signal lines driving the rigid PCBs redundant so that a breakage of a line will not necessarily affect the operation of the rigid PCB to which it is attached. The rigid-flex PCB is particularly applicable to light pads used in phototherapy, wherein LEDs mounted on the rigid-PCBs are powered and controlled through the redundant lines in the flexible PCB.

主权项

1. A rigid-flex printed circuit board (PCB) comprising an array of rigid printed circuit boards (PCBs), the array comprising a rigid PCB connected to at least two electrical lines, each of said lines designed to carry a single power voltage or a single electrical signal.