发明授权
US07892952B2 Laser apparatus, laser irradiation method, manufacturing method for semiconductor device, semiconductor device, production system for semiconductor device using the laser apparatus, and electronic equipment 有权
激光装置,激光照射方法,半导体装置的制造方法,半导体装置,使用该激光装置的半导体装置的制造系统以及电子设备

Laser apparatus, laser irradiation method, manufacturing method for semiconductor device, semiconductor device, production system for semiconductor device using the laser apparatus, and electronic equipment
摘要:
Provided are a laser apparatus of continuous oscillation that is capable of enhancing the efficiency of substrate processing, a laser irradiation method, and a manufacturing method for a semiconductor device using the laser apparatus. A portion of a semiconductor film that should be left on a substrate after patterning is grasped in accordance with a mask. Then, a portion to be scanned with a laser light is determined so that it is possible to crystallize at least the portion to be obtained through the patterning. Also, a beam spot is made to strike the portion to be scanned. As a result, the semiconductor film is partially crystallized. That is, with the present invention, the laser light is not scanned and irradiated onto the entire surface of a semiconductor film but is scanned so that at least an indispensable portion is crystallized. With the construction described above, it becomes possible to save a time taken to irradiate the laser light onto a portion that will be removed through the patterning after the crystallization of the semiconductor film.
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