Patent ID: 8273630
Filing Date: 2012-09-25
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device, comprising: forming a substrate having first and second surfaces, the substrate including no oxide film or an oxide film having a thickness no greater than 100 nm; forming a first film by covering at least the first surface; forming a first oxide film on the first and second surfaces; removing the first oxide film formed on the first surface; forming a mask pattern on the first surface by patterning the first film; forming a device separating region on the first surface by using the mask pattern as a mask; forming a gate insulating film on the first surface; forming a gate electrode on the first surface via the gate insulating film; forming a source and a drain on each side of the gate electrode; and forming a wiring layer on the substrate while leaving the first oxide film on the second surface.