Patent ID: 8669660

Claim:
A structure, comprising: an electrically conductive wire in an interlevel dielectric layer on a substrate; a dielectric passivation layer on a top surface of said wire and on a top surface of said interlevel dielectric layer; a first opening in said dielectric passivation layer, a central region of said top surface of said wire exposed in said first opening; an organic dielectric passivation layer on said dielectric passivation layer and on said wire in said first opening; a second opening in said organic dielectric passivation layer, said central region of said top surface of said wire and a region of said top surface of said dielectric passivation layer surrounding said first opening exposed in said second opening; an electrically conductive current spreading pad on a region of a top surface of said organic dielectric passivation layer adjacent to a perimeter of said second opening, on a region of said organic passivation layer exposed in said second opening, and on said central region of said top surface of said wire in said first opening; an electrically conductive solder bump pad comprising one or more layers on a top surface of said current spreading pad; a solder bump on a top surface of said solder bump pad, said solder bump containing tin; and wherein said sidewall of said dielectric organic passivation layer is concave in said second opening and said solder bump pad covers edges of said current spreading pad.