Patent ID: 8395203

Claim:
A semiconductor device, comprising: a semiconductor substrate; a lamination pattern formed over the top of the semiconductor substrate, and having a first gate electrode, a first insulation film over the first gate electrode, and a second insulation film over the first insulation film; a second gate electrode formed over the top of the semiconductor substrate, and adjacent to the lamination pattern; a first gate insulation film formed between the first gate electrode and the semiconductor substrate; and a third insulation film formed between the second gate electrode and the semiconductor substrate, and between the lamination pattern and the second gate electrode, the third insulation film having a charge storage part in the inside thereof, wherein at the sidewall on the side of the lamination pattern adjacent to the second gate electrode, the first insulation film is retreated from the first gate electrode and the second insulation film, and wherein an upper end corner portion of the first gate electrode is rounded.