发明名称 |
POLISHING APPARATUS AND POLISHING METHOD |
摘要 |
A polishing apparatus has a polishing table having a polishing surface and a top ring for pressing a substrate against the polishing surface while independently controlling pressing forces applied to a plurality of areas on the substrate. The polishing apparatus has a sensor for monitoring substrate conditions of a plurality of measurement points on the substrate, a monitor unit for performing a predetermined arithmetic process on a signal from the sensor to generate a monitor signal, and a controller for comparing the monitor signal of the measurement points with the reference signal and controlling the pressing forces of the top ring so that the monitor signal of the measurement point converges on the reference signal.
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申请公布号 |
US2010330878(A1) |
申请公布日期 |
2010.12.30 |
申请号 |
US20100881522 |
申请日期 |
2010.09.14 |
申请人 |
KOBAYASHI YOICHI;HIROO YASUMASA;OHASHI TSUYOSHI |
发明人 |
KOBAYASHI YOICHI;HIROO YASUMASA;OHASHI TSUYOSHI |
分类号 |
B24B49/00;B24B37/04;B24B49/10 |
主分类号 |
B24B49/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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