Patent ID: 7012017
Filing Date: 2006-03-14
Classification: H01L,H05K

Abstract:
1. A process for forming a conductive bump protruding from a dielectric film, said process comprising: providing a dielectric film having a first side and a second side; applying a stop layer to at least said first side of said dielectric film, said stop layer having an underside in contact with said first side of said dielectric film; forming a cavity in the dielectric film that extends through said dielectric film from said second side of said dielectric film to said stop layer; depositing conductive material to form a conductive plug in said cavity; removing said stop layer from said first side of said dielectric film to expose a surface of said conductive plug; controllably etching said dielectric film from around said conductive plug surface to form said conductive bump protruding from said dielectric film.