Patent ID: 7030487

Claim:
A chip scale packaging (CSP) module, comprising: a packaging substrate comprising a first surface and a second surface opposite to said first surface, a plurality of metalized through holes communicating said first surface and said second surface, and a central opening for wire-bonding; a chip adhered to said first surface of said packaging substrate with an adhesive layer, wherein said chip comprises a plurality of first bonding pads exposed by said central opening and electrically connected to corresponding second bonding pads disposed on said second surface of said packaging substrate via metal wires; a heat-dissipating plate disposed directly underneath said chip and between said adhesive layer and said packaging substrate for collecting and transferring heat produced by said chip through conduction, wherein said heat-dissipating plate is connected to said metalized through holes; a plurality of heat-dissipating solder balls implanted on said second surface of said packaging substrate, wherein said heat-dissipating solder balls are connected to said metalized through holes such that heat produced by said chip can be transferred to a circuit board; and a plurality of functional solder balls implanted on said second surface of said packaging substrate and disposed substantially between said central opening and said peripheral heat-dissipating solder balls for signal communicating between said chip and said circuit board.