Patent ID: 8354595

Claim:
A flex printed circuit board (PCB) assembly comprising: a first flex PCB including a plurality of holes at electrical contact locations, each hole having a conductive ring on both sides of the first flex PCB; a second flex PCB including a plurality of electrical pads corresponding to the holes at the electrical contact locations of the first flex PCB, wherein the pads are larger than the holes, and wherein each hole has a particular size and a particular location to enable visual alignment of the holes in the first flex PCB with the pads of the second flex PCB, before the first flex PCB and the second flex PCB are assembled together; a non-conductive adhesive material between and in contact with the first flex PCB and the second flex PCB to bond the first and second flex PCBs together, the non-conductive adhesive material including a clearance for each of the electrical pads, wherein each clearance is substantially equal to a corresponding electrical pad and comprises a cavity in the non-conductive material; and a conductive adhesive dispensed in the holes and filing the space created by the holes, corresponding cavities of the non-conductive material, and the corresponding electrical pads to provide electrical contacts between the holes of the first flex PCB and the pads of the second flex PCB.