Patent ID: 8399940

Claim:
A package structure having MEMS (Micro-Electro-Mechanical System) elements, comprising: a wafer having a third surface and a fourth surface opposite to the third surface, wherein the third surface has a plurality of MEMS elements, a plurality of electrical contacts and a plurality of second alignment keys; a plate having a first surface with a plurality of recesses and a plurality of seal rings disposed around peripheries of the recesses, a second surface opposite to the first surface and having a metal layer disposed thereon and a plurality of openings penetrating the first surface and second surfaces, wherein the seal rings of the plate are disposed on the third surface of the wafer such that the MEMS elements of the wafer are disposed in the recesses and enclosed by the seal rings and the electrical contacts and the second alignments keys are exposed via the openings of the plate; a plurality of transparent bodies disposed over the second alignment keys via an adhesive; an encapsulant disposed on the third surface of the wafer for encapsulating the plate, the electrical contacts and the transparent bodies; a plurality of bonding wires embedded in the encapsulant and each having one end connecting a corresponding one of the electrical contacts and the other end exposed from a top surface of the encapsulant; and a plurality of metal traces disposed on the encapsulant and electrically connected to the electrical contacts via the bonding wires.