Patent ID: 6180505
Filing Date: 2001-01-30
Classification: H01L

Abstract:
A process for forming a copper-containing structure, comprising the steps of:a) forming a first bulk copper-containing film at least indirectly on a substrate, said first bulk copper-containing film having a first surface;b) roughening said first surface;c) laminating an impurity film onto said first surface, said impurity film including copper and a first impurity and having a first impurity concentration;d) forming a second bulk copper-containing film on said impurity film, said second bulk copper-containing film having a thickness and a second surface, wherein said first bulk copper-containing film, said impurity film, and said second bulk copper-containing film form a composite film;e) forming a pattern within said composite film to create a pad having side walls;f) forming a transition film over said pad, said transition film having at least one component and forming an interface with said second surface;g) covering said transition film with a gold film; andh) heating said structure thereby urging the combination of said first impurity with said at least one component to produce a chemical mixture disposed along said interface.