Patent ID: 8319110

Claim:
A dual-layer flexible printed circuit, comprising: an inner flexible printed circuit comprising two laminating areas respectively positioned at two distal ends thereof and a protrusion formed adjacent to one distal end thereof; an outer flexible printed circuit comprising two laminating areas respectively positioned at two distal ends thereof corresponding to the laminating areas of the inner flexible printed circuit, the outer flexible printed circuit overlapping the inner flexible printed circuit with the laminating areas of the outer flexible printed circuit fixed to the corresponding laminating areas of the inner flexible printed circuit such that the protrusion of the inner flexible printed circuit is spaced from the outer flexible printed circuit and forms an accommodating cavity with the outer flexible printed circuit; the laminating areas of the inner flexible printed circuit and the outer flexible at two sides of the protrusion fixed together; and a fixing element accommodated within the accommodating cavity, and positioned between the outer flexible printed circuit and the inner flexible printed circuit, for preventing the protrusion from extruding along the longitudinal direction of the dual-layer flexible printed circuit.