Patent ID: 8836146
Filing Date: 2014-09-16
Classification: H01L

Abstract:
1. A semiconductor chip comprising: a semiconductor substrate; a MOS device in or on said semiconductor substrate; a first patterned circuit layer over said semiconductor substrate, wherein said first patterned circuit layer comprises a copper portion and a first conductive layer at a bottom and a sidewall of said copper portion; a first dielectric layer over said first patterned circuit layer and said semiconductor substrate, wherein a first opening in said first dielectric layer is over a first contact point of a first conductive interconnect of said first patterned circuit layer, and said first contact point is at a bottom of said first opening, and wherein a second opening in said first dielectric layer is over a second contact point of a second conductive interconnect of said first patterned circuit layer, and said second contact point is at a bottom of said second opening, wherein said first conductive interconnect has a portion spaced apart from said second conductive interconnect; a second patterned circuit layer over said first dielectric layer and on said first and second contact points, wherein said first contact point is connected to said second contact point through said second patterned circuit layer, wherein said second patterned circuit layer comprises an aluminum-containing layer; a second dielectric layer on said second patterned circuit layer and over said first dielectric layer, wherein a third opening in said second dielectric layer is over a third contact point of said second patterned circuit layer, and said third contact point is at a bottom of said third opening, wherein said third contact point is connected to said first contact point through said first opening, and said third contact point is connected to said second contact point through said second opening; and a conductive bump on said third contact point and a first surface of said second dielectric layer and vertically over said first and second contact points.