Patent ID: 8084343
Filing Date: 2011-12-27
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device comprising the steps of: preparing a semiconductor substrate; forming a plurality of first transistors and a plurality of second transistors on the semiconductor substrate; forming a first insulating film over the semiconductor substrate and the first and second transistors; forming a silicon oxynitride film over the first insulating film; forming a plurality of metal wirings on the silicon oxynitride film; forming a plurality of contact plugs in the first insulating film and the silicon oxynitride film after the forming the silicon oxynitride film before forming the plurality of metal wirings; and forming a second insulating film formed over and between the plurality of metal wirings by bias-applied plasma CVD using source gas containing hydrogen atoms, wherein each of the plurality of contact plugs is connected to each of the plurality of metal wirings in the step of forming the metal wirings, and wherein each of the first transistors includes a tunnel insulating film, a control gate electrode, and a floating gate electrode, and wherein each of the second transistors includes a gate insulating film and a gate electrode.