Patent ID: 6391733
Filing Date: 2002-05-21
Classification: H01L,Y10S

Abstract:
A method of producing a semiconductor device, the method comprising:performing a first doping implant in semiconductor material on opposite sides of a gate, thereby forming a source extension and a drain extension in the semiconductor material, wherein the source extension and the drain extension are on respective opposite sides of the gate; covering the source extension and the drain extension with a layer of dielectric material, wherein the dielectric material completely covers the source extension and the drain extension, and wherein the layer of dielectric material has an increased thickness close to the gate; performing a second doping implant in the semiconductor material on opposite sides of the gate, the second doping implant being made through the layer of dielectric material which completely covers the source extension and the drain extension; removing portions of the dielectric material to partially uncover the semiconductor material; and performing a third doping implant in the semiconductor material on opposite sides of the gate.