Patent ID: 7582162

Claim:
A semiconductor device production system comprising: first means for forming an insulating film that has a rectangular or stripe pattern depression portion and a projection portion on a substrate; second means for forming a semiconductor film on the insulating film; third means for storing a pattern information of the insulating film; a plurality of laser oscillators; a plurality of AO modulators, each corresponding to the plurality of laser oscillators; an optical system for collecting a plurality of laser lights emitted from the plurality of laser oscillators into a linear, laser beam on an irradiation position; fourth means for moving the irradiation position of the linear laser beam; fifth means for determining a scanning path of the linear laser beam and for controlling the fourth means, the scanning path being determined so as to include the depression portion of the semiconductor film from the pattern information of the insulating film referring to a marker that is formed on the substrate, and the fourth means being controlled to move the linear laser beam along the scanning path, thereby improving a crystallinity of the semiconductor film; sixth means for patterning the semiconductor film with improved crystallinity to form an island between a center and an edge of the depression portion; and seventh means for measuring an energy density of the plurality of laser lights located between the plurality of laser oscillators and the plurality of AO modulators.