Patent ID: 7316957
Filing Date: 2008-01-08
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device, comprising: forming an insulating film on a semiconductor substrate; forming openings having a designated width by selectively etching the insulating film; attaching a conductive film to the overall surface of the semiconductor substrate including the openings under a vacuum condition; forming gate electrodes corresponding to the openings and having a width larger than the width of the openings by selectively etching the conductive film and the insulating film; forming lightly doped drain regions and source/drain impurity regions in the surface of the semiconductor substrate at both sides of the gate electrodes; forming a mask layer covering portions of the semiconductor substrate having the source/drain impurity regions including the gate electrodes; forming trenches by selectively etching exposed portions of the semiconductor substrate using the mask layer as a mask; and forming an element isolating film in the trenches and on the semiconductor substrate adjacent the trenches.