Patent ID: 7846830
Filing Date: 2010-12-07
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device, comprising: forming an interconnect layer on a semiconductor substrate; forming a protective film on said interconnect layer; forming an anti-oxidizing layer between said interconnect layer and said protective film by thermally diffusing a different element on the surface of said interconnect layer, said different element being an element contained in said protective film and being different from an element contained in said interconnect layer, wherein, in forming the anti-oxidizing layer, thermal processing is conducted for at least 30 minutes; and providing an electrode pad on said protective film, wherein said electrode pad is in electrical contact with said interconnect layer and is disposed on said protective film in a position to permit contact by a probe, wherein the anti-oxidizing layer contains a same element as said element contained in said interconnect layer, said element contained in said interconnect layer being a metal, wherein said same element of said anti-oxidizing layer is chemically bonded or alloyed with said different element of said anti-oxidizing layer, wherein said different element is a metal having a lower oxidation-reduction potential than that of said metal of said interconnect layer, and wherein said anti-oxidizing layer is disposed between said interconnect layer and said protective film in a position that inhibits corrosion of said interconnect layer when an interface between said electrode pad and said interconnect layer is damaged by said probe.