Patent ID: 6465296
Filing Date: 2002-10-15
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device, comprising the steps of:providing a semiconductor substrate; forming a gate dielectric layer over the semiconductor substrate; forming a gate layer over the gate dielectric layer; etching the gate dielectric layer and the gate layer to form a gate stack; implanting source/drain junctions adjacent the sides of the gate stack; forming contact trenches in the semiconductor substrate to expose the source/drain junctions, the contact trenches adjacent the opposite sides of the gate stack, the contact trenches having inwardly curved cross-sectional widths formed using shallow trench isolation and a spacer around the gate stack; and forming conductive contacts in the contact trenches conductively connected with the source/drain junctions, the conductive contacts having inwardly curved cross-sectional widths in the semiconductor substrate.