Patent ID: 7034388

Claim:
A stack type flip-chip package, comprising: a substrate board having a plurality of bump contacts and line contacts thereon; a first chip having a first active surface and a back surface, wherein the first active surface faces the substrate board and has a plurality of first bonding pads thereon; a redistribution circuit layer on the back surface of the first chip, including a plurality of bump pads and line pads; a passivation layer on the back surface of the first chip, exposing the bump pads and the line pads of the redistribution circuit layer; a second chip disposed over the first chip, having a back surface and a second active surface with a plurality of second bonding pads thereon facing the first chip; a plurality of bumps, wherein a portion of the bumps are disposed between the bump contacts and the first bonding pads, and another portion of the bumps are disposed between the bump pads and the second bonding pads; a plurality of conductive wires that connect the line contacts and the line pads; a packaging material enclosing the first chip, the second chip and the conductive wires; and a heat sink bonded to the packing material covering the back surface of the second chip.