Patent ID: 6768190
Filing Date: 2004-07-27
Classification: H01L

Abstract:
A stack type flip-chip package, comprising:a substrate board having a surface with a plurality of bump contacts and a plurally of line contacts thereon; a first chip having a first active surface and a back surface, wherein the first active surface has a plurality of first bonding pads thereon; a redistribution circuit layer on the back surface of the first chip, wherein the redistribution circuit layer has a plurality of bump pads and a plurality of line pads thereon; 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 having a second active surface with a plurality of second bonding pads thereon; a plurality of bumps, wherein a portion of the bumps are disposed between the bump contacts and the first bonding pads, and a portion of the bumps are disposed between the bump pads and the second bonding pads; a plurality of conductive wires for connecting between the line contacts and the line pads; a packaging material, used for enclosing the first chip, the second chip and the conductive wires; and an underfill material filling the space between the first chip and the substrate and filling the gap between the first chip and the second chip.