Patent ID: 6277707
Filing Date: 2001-08-21
Classification: H01L

Abstract:
A method of forming a semiconductor device on a substrate, comprising the steps of:forming a first recess in the substrate;depositing an insulator on the substrate and in the first recess so that an isolation region is formed when the first recess is filled with the insulator;forming a second recess in a predetermined area of the substrate by removing a portion of the substrate in the predetermined area and a portion of the insulator disposed over the predetermined area;forming a recess insulation layer on the surface of the substrate and in the second recess;depositing a conductive material on the recess insulation layer and in the second recess so that a gate region is formed when the second recess is filled with the conductive material;removing a sufficient amount of the insulator, the recess insulation layer and the conductive material so that top surfaces of the insulator, the conductive material and the substrate are substantially at the same level.