Patent ID: 7122459
Filing Date: 2006-10-17
Classification: H01L

Abstract:
1. A manufacturing method of a semiconductor wafer package, comprising: providing a semiconductor wafer having a plurality of bonding pads and a passivation layer exposing the bonding pads; forming a plurality of under bump metallurgy layers on the bonding pads; disposing a mask above the semiconductor wafer to form a plurality of openings wherein the openings expose the under bump metallurgy layers located over the bonding pads; disposing bump structures in the openings, wherein each said bump structure has a bump and a reinforced layer covering the bump; performing a reflow process to have the bumps transformed into reflowed bumps to be attached to the under bump metallurgy layers and have the reinforced layers transformed into bump-reinforced collars to cover the under bump metallurgy layers and the reflowed bumps; and removing the mask.