Patent ID: 7485505
Filing Date: 2009-02-03
Classification: H01L

Abstract:
1. A method for manufacturing an n-channel type thin-film transistor, the method comprising: a step of irradiating a non-single-crystal semiconductor film with laser light having a reverse peak-like light intensity distribution to crystallize an irradiated region to form a crystallization region; and a step of forming a thin-film transistor by positioning a side edge of a drain or source region which is adjacent to a channel region, in the crystallization region within about 0.5 μm from a crystal growth start position or vertical growth start position, within about 1.0 μm from the crystal growth start position, or about 2.0 to 3.8 μm or about 4.6 to 5.0 μm away from the crystal growth start position.