Patent ID: 8481418

Claim:
A method for fabricating a circuit component, comprising: providing a first device comprising semiconductor substrate, a conductive pad over said semiconductor substrate, and a polymer layer over said semiconductor substrate, wherein a first opening in said polymer layer is over a contact point of said conductive pad; forming a first conductive layer on said contact point of said conductive pad and said polymer layer; forming a second conductive layer on said first conductive layer; forming a first photoresist layer over said semiconductor substrate; electroplating a conductive interconnect in a second opening in said first photoresist layer, wherein said conductive interconnect is coupled to said contact point through said second conductive layer; forming a nickel-containing layer over said copper conductive interconnect wherein said nickel-containing layer has a width greater than a width of said conductive interconnect; forming a solder over said nickel-containing layer, in which said solder has a width equal to the width of said nickel-containing layer; and after said forming said second conductive layer, removing said first conductive layer not under said second conductive layer.