Patent ID: 6404010
Filing Date: 2002-06-11
Classification: H01L

Abstract:
MOS technology power device comprising a plurality of elementary active units and a part of said power device which is placed between zones where said elementary active units are formed, characterized in that said part of the power device comprises at least two heavily doped body regions of a first conductivity type which are formed in a semiconductor layer of a second conductivity type, a first lightly doped semiconductor region of the first conductivity type which is placed laterally between said two body regions, said first semiconductor region being placed under a succession of a thick silicon oxide layer, a polysilicon layer and a metal layer, and a plurality of second lightly doped semiconductor regions of the first conductivity type being placed under said at least two heavily doped body regions and under said first lightly doped semiconductor region of the first conductivity type, each region of said plurality of second lightly doped semiconductor regions of the first conductivity type being separated from the other by portions of said semiconductor layer of the second conductivity type.