Patent ID: 9064927
Filing Date: 2015-06-23
Classification: H01L

Abstract:
1. A semiconductor device comprising: a lower electrode formed over a surface of a semiconductor substrate; a first capacitance film formed on a surface of the lower electrode; an intermediate electrode formed on a surface of the first capacitance film over at least a portion of the tower electrode, at least the first capacitance film being interposed between the intermediate electrode and at least the portion of the lower electrode; a second capacitance film formed on a surface of the intermediate electrode such that the intermediate electrode is interposed between the first capacitance film and the second capacitance film, the first capacitance film and the second capacitance film being of different types; and an upper electrode formed on a surface of the second capacitance film over the intermediate electrode, at least the second capacitance film being interposed between the upper electrode and at least a portion of the intermediate electrode, wherein an outer edge portion of the first capacitance film and an outer edge portion of the second capacitance film are vertically disposed to coincide with an edge portion of the tower electrode.