Patent ID: 6521934
Filing Date: 2003-02-18
Classification: H01L

Abstract:
A semiconductor device comprising:a semiconductor substrate having first and second regions defined in a principal surface of said semiconductor substrate; a first lamination structure formed in a partial area of said first region of said principal surface of said semiconductor substrate, said first lamination structure having a first conductive film and a first insulating film stacked in this order from the side of said semiconductor substrate; and a second lamination structure formed in said second region of said principal surface of said semiconductor substrate; said second lamination structure having a second conductive film, a second insulating film, a third conductive film and a third insulating film stacked in this order from the side of said semiconductor substrate, the first and third insulating films of said first and second lamination structures being made of same material and having different thickness, and a height of an upper surface of said second lamination structure as measured from the principal surface of said semiconductor substrate being equal to or lower than a height of an upper surface of said first lamination structure as measured from said principal surface of said semiconductor substrate.