发明授权
- 专利标题: Wafer inspection systems and methods for analyzing inspection data
- 专利标题(中): 晶圆检查系统和检验数据分析方法
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申请号: US11746884申请日: 2007-05-10
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公开(公告)号: US07417724B1公开(公告)日: 2008-08-26
- 发明人: Paul Sullivan , George Kren , Eliezer Rosengaus , Patrick Huet , Robinson Piramuthu , Martin Plihal , Yan Xiong
- 申请人: Paul Sullivan , George Kren , Eliezer Rosengaus , Patrick Huet , Robinson Piramuthu , Martin Plihal , Yan Xiong
- 申请人地址: US CA Milpitas
- 专利权人: KLA-Tencor Technologies Corp.
- 当前专利权人: KLA-Tencor Technologies Corp.
- 当前专利权人地址: US CA Milpitas
- 代理机构: Baker & McKenzie LLP
- 主分类号: G01N21/88
- IPC分类号: G01N21/88 ; G06K9/00
摘要:
Wafer inspection systems and methods are provided. One inspection system includes a module measurement cell coupled to a host inspection system by a wafer handler. The module measurement cell is configured to inspect a wafer using one or more modes prior to inspection of the wafer by the host inspection system. The one or more modes include backside inspection, edge inspection, frontside macro defect inspection, or a combination thereof. Another inspection system includes two or more low resolution electronic sensors arranged at multiple viewing angles. The sensors are configured to detect light returned from a wafer substantially simultaneously. A method for analyzing inspection data includes selecting a template corresponding to a support device that contacts a backside of a wafer prior to inspection of the backside of the wafer. The method also includes subtracting data representing the template from inspection data generated by inspection of the backside of the wafer.
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