发明名称 |
Laser irradiation apparatus, method of laser irradiation, and method for manufacturing semiconductor device |
摘要 |
A laser irradiation apparatus and a method of laser irradiation which can improve use efficiency of a laser beam, eliminate an influence of stray light at a DMD, and form an irradiation pattern with a homogeneous beam spot are provided. The laser irradiation apparatus includes at least a laser oscillator, a diffractive optical element, and an optical element having many minute mirrors arranged two-dimensionally. A laser beam emitted from the laser oscillator is divided into plural laser beams by a diffractive optical element and the laser beams are deflected by plural micromirrors. The divided laser beams have equal energy to each other.
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申请公布号 |
US7532378(B2) |
申请公布日期 |
2009.05.12 |
申请号 |
US20070705794 |
申请日期 |
2007.02.14 |
申请人 |
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. |
发明人 |
TANAKA KOICHIRO;OISHI HIROTADA |
分类号 |
G02B26/08;H01L21/00 |
主分类号 |
G02B26/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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