Patent ID: 7129586

Claim:
A flip chip packaging structure comprising: a semiconductor chip; a substrate; a first bonding pad provided on a surface of the semiconductor chip; a second bonding pad provided on the substrate; a passivation film formed to cover the first bonding pad such that a plurality of apertures are opened on the passivation film so as to expose a plurality of portions of said first bonding pad through the apertures, respectively; a plurality of first bumps, respectively, disposed on the portions of the first bonding pad through the apertures such that the first bumps are spaced apart from one another so as to form a clearance space; a second bump disposed on the second bonding pad and bonded to the first bumps such that the second bump enters into the clearance space so as to form a three-dimensional bonding boundary surface between the second bump and the plurality of first bumps bonded to each other, wherein the first and second bonding pads are electrically and mechanically connected with each other through the first and second bumps.