Patent ID: 8581239

Claim:
The package structure at least comprising: a semiconductor structure comprising: a carrier having a surface, a protective layer formed on said surface, and a plurality of conductive pads formed on said surface, wherein the protective layer comprises a plurality of openings, and the conductive pads exposed by the openings; a plurality of under bump metallurgy layers formed on the conductive pads; a plurality of copper containing bumps formed on the under bump metallurgy layers, each of the copper containing bumps comprises a top surface and a ring surface in connection with the top surface; and at least one organic barrier layer having a first coverage portion, and the first coverage portion covers the ring surface of each of the copper containing bumps; and a substrate having a plurality of connective pads and a solder mask layer, wherein the solder mask layer comprises a plurality of slots for exposing the connective pads coupled with the copper containing layers, and the first coverage portion of the organic barrier layer covers the solder mask layer.