Patent ID: 8383452

Claim:
A method for manufacturing a semiconductor device, comprising: depositing a first amorphous film that has a first impurity added thereto; depositing a third amorphous lower-layer film on the first amorphous film; forming microcrystals on the third amorphous lower-layer film; depositing a third amorphous upper-layer film on the third amorphous lower-layer film, the third amorphous upper-layer film covering the microcrystals; depositing a second amorphous film on the third amorphous upper-layer film, the second amorphous film having a second impurity added thereto; and radiating microwaves to crystallize the third amorphous lower-layer film and the third amorphous upper-layer film to form a third crystal layer, and crystallize the first amorphous film and the second amorphous film to form a first crystal layer and a second crystal layer.