Patent ID: 7309645
Filing Date: 2007-12-18
Classification: H01L

Abstract:
1. A semiconductor thin film crystallization method comprising the steps of: forming a semiconductor thin film over a substrate; forming a band-shaped portion for blocking crystal growth of the semiconductor thin film in the semiconductor film or over the semiconductor thin film without patterning the semiconductor thin film into islands, the band-shaped portion being formed linearly; and crystallizing the semiconductor thin film by causing an energy beam of a continuous wave to scan in a direction transverse to both a longitudinal direction of the band-shaped portion for blocking crystal growth, and a longitudinal length of an application region of the energy beam, to thereby crystallize the semiconductor thin film, wherein in the step of forming the band-shaped potion, a plurality of the band-shaped portions are formed, spaced from each other in a direction transverse to a longitudinal direction of the band-shaped portion, and in the step of crystallizing the semiconductor thin film, the energy beam is caused to scan, sequentially intersecting said plurality of the band-shaped portions.