Patent ID: 8551842

Claim:
A method of manufacturing a semiconductor device, the method comprising: performing heat treatment for activating impurities of a transistor having a gate electrode over a gate insulating film with a higher relative permittivity than a silicon oxynitride film or a silicon oxide film, wherein said performing heat treatment comprises: performing a first heat treatment, in which a wafer surface is heated at a temperature of 800 to 1000° C. in 5 to 50 milliseconds by one of low-output flash lamp annealing or laser annealing; and performing a second heat treatment, in which said wafer surface is heated at a temperature equal to or more than 1100° C. in 0.1 to 10 milliseconds one of by flash lamp annealing or laser annealing with a higher output than in said first heat treatment, wherein said second heat treatment is performed after said first heat treatment.