Patent ID: 9153501
Filing Date: 2015-10-06
Classification: H01L

Abstract:
1. A manufacturing method of a semiconductor device, comprising: implanting indium into a first region of a semiconductor substrate; forming a first gate insulation film having a first film thickness on the semiconductor substrate in the first region and a second region different from the first region after the implanting; removing the first gate insulation film from the first region with a part of the first gate insulation film located in the second region being left; annealing the semiconductor substrate at a temperature of 1000° C. or higher after forming the first gate insulation film; forming a second gate insulation film having a second film thickness on the first region after said annealing; forming a first gate electrode on the second gate insulation film in the first region; forming a first source/drain region in the first region of the semiconductor substrate by implanting an n-type impurity into the first region of the semiconductor substrate after said forming the first gate electrode; and activating the indium by heat treatment after said implanting and before said forming the first gate insulation film, wherein a temperature falling rate of said annealing is 20° C. per second or higher.