Patent ID: 6596585
Filing Date: 2003-07-22
Classification: H01L,Y10S

Abstract:
A method of manufacturing a nonvolatile memory device having an electrode in a floating state, an insulating film and a further electrode, comprising the steps of:forming the electrode in the floating state, overlying a substrate; forming the insulating film adjacent said electrode in the floating state, the insulating film being a silicon oxide film formed by chemical vapor deposition; annealing said silicon oxide film in a nitrogen-containing atmosphere to incorporate nitrogen in said silicon oxide film, to form an annealed silicon oxide film, wherein the annealed silicon oxide film has nitrogen included therein in a maximum amount in a range of 2Ã—1020 to 2Ã—1021 atoms/cm3; applying a wet oxidation to the silicon oxide film so as to reduce hydrogen concentration in the silicon oxide film; and forming said further electrode adjacent said silicon oxide film, after said annealing.