Patent ID: 7972943

Claim:
A method for manufacturing a semiconductor device, comprising the steps of: forming an amorphous semiconductor film over an insulating substrate; forming a cap film over a first amorphous region and a second amorphous region in the amorphous semiconductor film; forming a first crystalline region after the step of forming the cap film, by irradiating a first continuous-wave laser beam or a first pulsed laser beam with a repetition rate of greater than or equal to 10 MHz to the first amorphous region; and forming a second crystalline region after the step of forming the cap film, by irradiating a second continuous-wave laser beam or a second pulsed laser beam with a repetition rate of greater than or equal to 10 MHz to the second amorphous region, wherein a first orientation of crystal planes parallel to a surface of the first crystalline region is oriented along {001} in greater than or equal to 40% and less than or equal to 100% of first crystal grains in the first crystalline region, and wherein a second orientation of crystal planes parallel to a surface of the second crystalline region is oriented along {211} or {101} in greater than or equal to 40% and less than or equal to 100% of second crystal grains in the second crystalline region.