Patent ID: 6333562
Filing Date: 2001-12-25
Classification: H01L

Abstract:
A multichip module comprising:means for supporting chips, the supporting means being provided with a plurality of conductive leads;a first chip disposed on the supporting means, the first chip having a plurality of bonding pads formed on the active surface thereof;a second chip positioned over the first chip, the second chip having a plurality of bonding pads formed on the active surface thereof;a plurality of electrically conductive bumps having base portions and pillar protruding portions, the bumps being attached at their base portions to the bonding pads of the first chip and connected at their pillar protruding portions to the backside surface of the second chip so as to support the second chip;an adhesive layer interposed between the first and the second chips;a plurality of first bonding wires having one ends connected to the conductive leads by ball bonding and the other ends connected to the base portions of the bumps on the bonding pads of the first chip by stitch bonding; anda plurality of second bonding wires connected between the conductive leads and the bonding pads of the second chip,wherein the pillar protruding portions of bumps help to provide clearance between the first and second chips for the first bonding wires.