Patent ID: 7419899
Filing Date: 2008-09-02
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device, comprising: forming a laser marking in a first region of a wafer, the first region having a first width from an edge of the wafer; forming a trench pattern above the wafer except for above the first region; forming a metal interconnection layer above the wafer where the laser marking and the trench pattern are formed; removing a predetermined portion of the metal interconnection layer, the predetermined portion having a second width from the edge of the wafer equal to or greater than the first width; and planarizing the metal interconnection layer above the wafer where the trench pattern is formed to a predetermined thickness, wherein the metal interconnection layer is formed of at least one material selected from the group consisting of Al, Al-alloy, Cu, Au, Ag, W, and Mo.