Patent ID: 8212305

Claim:
A semiconductor device including a plurality of non-volatile memory cells electrically connected to a word line extending in a first direction in a plane view, each of the non-volatile memory cells comprising: a floating gate formed over a semiconductor substrate; a second insulating film formed over the floating gate; and a control gate configured to serve as the word line formed over the second insulating film, wherein a plurality of first insulating films are formed between each of the floating gates in the first direction, respectively, wherein the second insulating film is formed over the first insulating films, side surfaces of the floating gate and a top surface of the floating gate, wherein a length of each floating gate in a second direction, being perpendicular to the first direction is larger than a maximum length of the floating gate in the first direction, and wherein a length from a top surface of the second insulating film which is formed over the first insulating films to the top surface of the floating gate is larger than a length of the space between the each of the floating gates in the first direction.