Patent ID: 8389350

Claim:
A method of manufacturing N-type MOSFET comprising: implanting a p-type dopant into in a surface layer of a semiconductor substrate to form a channel region; forming a gate insulating film including High-k material and a gate electrode on said channel region; implanting a p-type dopant into both ends of said channel region in an inner portion of said semiconductor substrate to form halo regions; implanting a p-type dopant into both ends of said channel region in a surface layer of said semiconductor substrate to form extension regions; wherein one of said step of forming said channel region and said step of forming halo regions includes: implanting C into one of said channel region and said halo regions, wherein the amount of said High-k material included in the gate insulating film is an amount that increases a threshold voltage by an amount that compensates for a decrease of said threshold voltage caused by said implanting of C.