Patent ID: 8294042

Claim:
A connector, comprising: a circuit board, comprising: a substrate, having a first surface, a second surface opposite to the first surface and at least one through hole, wherein the through hole connects the first surface and the second surface; a first conductive layer, disposed on the substrate to cover an inner wall of the through hole; a filler post, located in the through hole, wherein a part of the first conductive layer is located between the filler post and the substrate; at least a conductive elastic cantilever, located over the first surface and electrically connected to the first conductive layer, the conductive elastic cantilever having a fixed end, a free end and a bended portion connected between the fixed end and the free end, wherein the fixed end is connected to the circuit board and located at a periphery of the through hole, and the bended portion is curved from the fixed end toward a direction away from the circuit board; a gold layer, covering the conductive elastic cantilever and being over a part of the first surface; and at least one solder ball, disposed over the second surface and electrically connected to the first conductive layer.