Patent ID: 8530958

Claim:
A semiconductor device comprising a plurality of non-volatile memory cells over a main surface of a semiconductor substrate, each of the non-volatile memory cells comprising: a first gate insulating film including an insulating film for charge storage formed over the semiconductor substrate; a first gate electrode formed over the first gate insulating film and having first and second side faces, the first and second side faces being positioned at opposite sides of the first gate electrode in a direction along the main surface of the semiconductor substrate; a first insulating film side wall formed over the first side face of the first gate electrode; a second insulating film side wall formed over a side face of the first insulating film side wall; a first semiconductor region formed in the main surface of the semiconductor substrate in a self-alignment manner with respect to the first side face of the first gate electrode; a second semiconductor region formed in the main surface of the semiconductor substrate in a self-alignment manner with respect to a side face of the first insulating film side wall so as to be electrically coupled to the first semiconductor region; and a first silicide layer formed over the second semiconductor region in a self-alignment manner with respect to a side face of the second insulating film side wall, wherein the first semiconductor region is a first doped region of the semiconductor substrate, the second semiconductor region is a second doped region of the semiconductor substrate, a surface of the second semiconductor region is recessed with respect to a portion of the main surface of the semiconductor substrate directly under the first gate electrode and the first insulating film side wall, the second insulating film side wall is formed separately from the first insulating film side wall, and the recessed surface of the second semiconductor region is formed in a self-alignment manner with respect to the side face of the first insulating film side wall.