发明授权
- 专利标题: Ice particle forming and blasting device
- 专利标题(中): 冰粒形成和喷砂装置
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申请号: US434982申请日: 1989-11-09
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公开(公告)号: US4974375A公开(公告)日: 1990-12-04
- 发明人: Masuo Tada , Takaaki Fukumoto , Toshiaki Ohmori
- 申请人: Masuo Tada , Takaaki Fukumoto , Toshiaki Ohmori
- 申请人地址: JPX
- 专利权人: Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人: Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人地址: JPX
- 优先权: JPX63-284921 19881111
- 主分类号: B08B7/02
- IPC分类号: B08B7/02 ; B24C1/00 ; B24C3/22 ; F25C1/00 ; H01L21/00 ; H01L21/304
摘要:
A solid surface cleaning device utilizes a jet of ice particles of ultrapure water for removing contaminants from a surface of a solid such as a semiconductor wafer. The electrical resistivity of ultrapure water stored in a tank is reduced by means of a gas such as dry air or carbon dioxide evolving into the water from a bubble tube disposed in the tank. The water whose resistivity is thus reduced is sprayed from a nozzle into an ice-making container which is refrigerated by the vaporization of a refrigerant discharged into the container. The fine ice particles that are thus generated in the container are sprayed and blasted from a jet spray nozzle onto the surface of the cleaned solid supported within a jet spray chamber. The air inside the chamber is exhausted by a blower together with the ice particles that have been ejected from the jet spray nozzle.
公开/授权文献
- US4481644A Differential pulse code modulation transmission system 公开/授权日:1984-11-06
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