Patent ID: 7915730
Filing Date: 2011-03-29
Classification: H01L

Abstract:
1. A packaging conductive structure for a semiconductor substrate with a pad, the packaging conductive structure comprising: a passivation layer disposed on the semiconductor substrate for partially overlaying the pad and defining a receiving space therein; an under bump metal, electrically connecting with the pad of the semiconductor substrate, wherein the under bump metal includes a central portion and a periphery portion, in which the central portion is disposed in the receiving space and partially bonds to the pad, and the periphery portion partially overlays an edge of the passivation layer; at least one auxiliary component disposed on the under bump metal, wherein the at least one auxiliary component is a protrusion; a bump conductive layer disposed on the under bump metal and the at least one auxiliary component; and a bump disposed on the bump conductive layer; whereby the bump electrically connects with the pad of the semiconductor substrate through the bump conductive layer and the under bump metal.