Patent ID: 7863125

Claim:
A manufacturing method of a CMOS type semiconductor device, comprising the steps of: (a) preparing a semiconductor substrate which has pMOS transistor formation areas and nMOS transistor formation areas; (b) forming an insulating film over the semiconductor substrate; (c) after step (b), introducing halogen to the semiconductor substrate of all or partial areas of the pMOS transistor formation area; (d) after step (c), removing the insulating film; (e) after step (d), forming a first gate insulating film over the semiconductor substrate of the pMOS transistor formation area after the step (d); (f) after step (e), introducing nitrogen to the first gate insulating film; (g) after step (f), forming a first gate electrode over the first gate insulating film; and (h) after step (g), incorporating boron into the first gate electrode.