Patent ID: 7183229

Claim:
A method for manufacturing a semiconductor thin-film comprising: forming a low-crystallization semiconductor thin-film on a substrate; and heating and cooling the low-crystallization semiconductor thin-film to a fusion, a semi-fusion, or a non-fusion state by flash lamp annealing with a flash lamp source apparatus, wherein, the flash lamp source apparatus is selected from the group consisting of: (b1) a flash lamp source apparatus comprising: (b1 I ) a housing, (b1 II ) a reflecting member in the housing, the reflecting member being at earth potential and optionally comprising irregularities on its surface, and (b1 III ) a lamp in said housing; (b2) a flash lamp source apparatus comprising: (b2 I ) a housing, (b2 II ) a reflecting member in the housing, (b2 III ) an IR-blocking filter or an IR-reducing filter, and (b2 IV ) a lamp in the housing; (b3) a flash lamp source apparatus comprising: (b3 I ) a housing, (b3 II ) a reflecting member in the housing, (b3 III ) a lamp in the housing, and (b3 IV ) a condesing lens or a light homogenizer; (b4) a flash lamp source apparatus comprising: (b4 I ) a housing, and (b4 II ) a reflecting member, wherein, the housing and the reflecting are cooled by a circulating coolant, and the configuration of the flash lamp source apparatus is selected from the group consisting of: (1) a reflecting member is provided in a housing which contains a lamp and which is at the earth potential, arid when necessary, miiiute irregularities are formed on the surface of the reflecting member; (2) a lamp and a reflecting member are provided in a housing having shading properties, and when necessary, flash emission light is transmitted through a transparent member having infrared-reducing properties or infrared-blocking properties; (3) a lamp and a reflecting member are provided in a housing, and flash emission light reflected and condensed and flash emission light passing in the forward direction are transmitted through a condensing lens or a light homogenizer; and (4) a reflecting member and a housing are cooled by a circulating coolant.