Patent ID: 6383850
Filing Date: 2002-05-07
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device, comprising the steps of:(a) forming a first semiconductor layer of a first conductivity type on an insulator, which has a first main surface adjacent to said insulator and a second main surface on the opposite side to said first main surface; (b) forming a first insulating layer on said second main surface of said first semiconductor layer; (c) forming a first control electrode having a straight portion provided on said first insulating layer extending in a first direction and a wide portion extending from said straight portion along a second direction opposite to said first direction; (d) introducing a first impurity of said first conductivity type into said first semiconductor layer using at least an end of said wide portion of said first control electrode as a mask to form a second semiconductor layer; and (e) introducing a second impurity of a second conductivity type opposite to said first conductivity type into said first semiconductor layer using said first control electrode and a shield covering said second semiconductor layer as masks to form a third semiconductor layer and a fourth semiconductor layer of said second conductivity type sandwiching said first semiconductor layer below said straight portion.