Patent ID: 6017783
Filing Date: 2000-01-25
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device comprising the steps of:preparing a semiconductor island on an insulating surface of a substrate;forming an insulating layer covering a whole surface of said semiconductor island to prevent anodic oxidation of said semiconductor island;forming a gate electrode on said insulating layer;anodic oxidizing a surface of said gate electrode to form an anodic oxide layer on at least side surfaces of said gate electrode; thenremoving a portion of said insulating layer to form a gate insulating filmintroducing an impurity ion into portions of said semiconductor island with said gate electrode having said anodic oxide layer provided thereon as a mask in order to form a pair of impurity conductivity regions in said semiconductor island and a channel region between said pair of impurity conductivity regions; andforming at least an electrode being in contact with one of said pair of impurity conductivity regions and said anodic oxide layer,wherein junctions between said impurity conductivity regions and said channel region are aligned with side edges of said gate electrode.