发明授权
- 专利标题: Method for removing particles from a surface of an article
- 专利标题(中): 从制品表面去除颗粒的方法
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申请号: US08963685申请日: 1997-11-04
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公开(公告)号: US06240931B1公开(公告)日: 2001-06-05
- 发明人: Toshiaki Fujii , Kikuo Okuyama , Manabu Shimada
- 申请人: Toshiaki Fujii , Kikuo Okuyama , Manabu Shimada
- 优先权: JP8-307507 19961105; JP9-208412 19970718
- 主分类号: B08B312
- IPC分类号: B08B312
摘要:
A method for removing particles from a surface of an article, such as a semiconductor wafer in a clean room. The particles are supplied with an electric charge. Subsequently, an ultrasonic wave or a gas stream is applied onto the surface of the article while an electric field is applied for driving away the electrically charged particles from the surface, thereby removing particles having a dimension smaller than 1 micrometer from the surface. The presence of a collecting member allows the removal of resulting, floating particles.
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