Patent ID: 7585761
Filing Date: 2009-09-08
Classification: G02F,H01L

Abstract:
1. A method of manufacturing a semiconductor device comprising the steps of: forming a semiconductor layer comprising an impurity region; forming a gate electrode over the semiconductor layer through a first insulating film; forming a second insulating film over the gate electrode; forming a contact hole in the second insulating film to reach the impurity region; forming a first conductive film with a property as a barrier over the second insulating film; patterning the first conductive film; forming a second conductive film containing copper as its main component on the patterned first conductive film through an opening of a mask; and reducing a width of the second conductive film with dry etching to form a wiring electrically connected to the impurity region over the second insulating film, the wiring including the patterned first conductive film and the second conductive film.