Patent ID: 6720621
Filing Date: 2004-04-13
Classification: H01L

Abstract:
A SOI semiconductor device comprising:a resistor body which is formed of a top semiconductor layer in a SOI substrate, the SOI substrate including an embedded dielectric film and the top semiconductor layer of the SOI substrate being formed on the embedded dielectric film and being electrically isolated by an insulating film which at least partially surrounds the top semiconductor layer, wherein a resistance value of the resistor body is determined by the concentration of impurities contained in the top semiconductor layer and by the dimension of the resistor body, and wherein sufficient impurities are provided in the resistor body so that the resistor body is partially depleted so that a non-depleted region is provided therein between the embedded dielectric film and a bottom edge of a depletion region of the top semiconductor layer under at least a control electrode which is provided over at least part of the resistor body.