Patent ID: 8385124
Filing Date: 2013-02-26
Classification: G11C,H01L

Abstract:
1. A semiconductor device, comprising: a nonvolatile memory cell formed in a main surface of a semiconductor substrate, wherein the nonvolatile memory cell comprises: a first insulating film formed over the semiconductor substrate; a conductive film formed over the first insulating film; a second insulating film formed over the conductive film; a charge storage film formed over the second insulating film to be capable of storing therein charges; a third insulating film formed over the charge storage film; a first gate electrode formed over the third insulating film; a fourth insulating film formed to come in contact with the set of stacked films from the first insulating film to the first gate electrode; a fifth insulating film formed over the semiconductor substrate so as to be juxtaposed with the first insulating film; a second gate electrode formed over the fifth insulating film and in a side surface of the fourth insulating film so as to be adjacent to the first gate electrode; and source/drain regions formed in the semiconductor substrate such that the first gate electrode and the second gate electrode are each interposed therebetween, and wherein the conductive film and the charge storage film are formed to two-dimensionally overlap each other.