Patent ID: 8941178
Filing Date: 2015-01-27
Classification: H01L

Abstract:
1. A semiconductor device comprising: a supporting substrate including an upper surface having a first region, second regions sandwiching the first region in a first direction, and third regions sandwiching the first and second regions in the first direction; a first insulating film formed on the supporting substrate; a first semiconductor layer formed on the first insulating film; a gate electrode formed via a gate insulating film on a portion of the first semiconductor layer which is right above the first region; a pair of source/drain regions containing an impurity of a first conductivity type, formed so as to sandwich the gate electrode therebetween in the first direction; and a diffusion layer containing an impurity of a second conductivity type, formed in the second region, wherein a concentration of an impurity of the second conductivity type introduced into an upper surface of the supporting substrate is higher in the second regions than the first region, wherein the source/drain regions include: wherein a concentration of an impurity of the second conductivity type introduced into the upper surface of the supporting substrate is higher in the second regions than the third regions.