Patent ID: 7052935

Claim:
A flip-chip packaging process, comprising at least the steps of: providing a chip and a substrate, wherein the chip has an active surface with bonding pads disposed thereon, and the substrate has a carrying surface with bump pads disposed thereon, wherein locations of the bump pads correspond to locations of the bonding pads; disposing a plurality of supporters at a periphery of the active surface, and forming an uncured electrically conductive adhesive bump on each bump pad; situating the chip over the carrying surface of the substrate to connect the active surface and the carrying surface via the supporters with a distance between the active surface and the carrying surface; pressing the chip toward the substrate to decrease the distance between the active surface and the carrying surface, so as to cause elastic strain in the supporters and increase a contact area between each pair of electrically conductive adhesive bump and bonding pad; stopping pressing the chip, so that the electrically conductive adhesive bumps, each connecting a bonding pad and a corresponding bump pad, have a smaller diameter at a central portion thereof than at end portions thereof; and curing the electrically conductive adhesive bumps.