发明申请
- 专利标题: METHODS FOR PRODUCING AND PROCESSING SEMICONDUCTOR WAFERS
- 专利标题(中): 生产和加工半导体波长的方法
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申请号: US12754846申请日: 2010-04-06
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公开(公告)号: US20100323586A1公开(公告)日: 2010-12-23
- 发明人: Georg Pietsch
- 申请人: Georg Pietsch
- 优先权: DE102009025243.6 20090617
- 主分类号: B24B7/10
- IPC分类号: B24B7/10
摘要:
Semiconductor wafers are polished by a material-removing polishing process A, on both sides of the wafer, using an abrasive-free polishing pad, and a polishing agent which contains abrasive; and a material-removing polishing process B, on at least one side of the wafer, using a polishing pad with a microstructured surface containing no materials which contact the wafer which are harder than the semiconductor material, and a polishing agent is added which has a pH≧ to 10 and contains no substances with abrasive action. Preferred is a method for producing a semiconductor wafer, comprising the following ordered steps: separating a semiconductor single crystal into wafers; simultaneously processing both sides of the wafer by chip-removing processing; polishing the wafer, comprising a polishing process A and a polishing process B; and CMP of one side of the wafer, removing
公开/授权文献
- US08398878B2 Methods for producing and processing semiconductor wafers 公开/授权日:2013-03-19
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