发明名称 Endpoint detection using laser interferometry
摘要 A method and system for determining an endpoint in a (near) real-time environment using statistical process control. By utilizing such control, an endpoint of a semiconductor process (e.g., an etch) can be monitored. Monitoring may lead to increased yields by avoiding or reducing error conditions (e.g., under- or over-etching).
申请公布号 US7115211(B2) 申请公布日期 2006.10.03
申请号 US20040916386 申请日期 2004.08.12
申请人 TOKYO ELECTRON LIMITED 发明人 DELP DEANA R.
分类号 G01L21/30;H01L21/00;H01L21/3065;H01L21/66 主分类号 G01L21/30
代理机构 代理人
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