Patent ID: 7759725
Filing Date: 2010-07-20
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor substrate; a first conductor, formed in a first region of the semiconductor substrate with a first insulating film therebetween; a second insulating film, formed on the first conductor and having a first opening in a contact region of the first conductor; a flash memory, formed by sequentially laminating, on a second region of the semiconductor substrate, a tunnel insulating film made of the same material as the first insulating film, a floating gate made of the same material as the first conductor, an intermediate insulating film made of the same material as the second insulating film, and a control gate; an inter-layer insulating film having a hole in the contact region of the first conductor; and a conductive plug formed in the hole and electrically connected to the contact region of the first conductor.