Patent ID: 7288811
Filing Date: 2007-10-30
Classification: G11C,H01L

Abstract:
1. A semiconductor device comprising: a semiconductor substrate; an isolation region formed on said semiconductor substrate and defining a continuous active region including a select transistor region and a direct tunnel element region; a gate insulating film formed on a channel region of said select transistor region; a tunnel insulating film formed on a partial area of said direct tunnel element region and having a thickness different from a thickness of said gate insulating film; a continuous floating gate electrode formed above an area including said gate insulating film and said tunnel insulating film; an inter-electrode insulating film formed on a surface of said floating gate electrode; a control gate electrode facing said floating gate electrode via said inter-electrode insulating film; and a pair of source/drain regions formed on both sides of the channel region of said select transistor region and not overlapping said tunnel insulating film.