发明申请
US20110256802A1 CYCLIC SELF-LIMITING CMP REMOVAL AND ASSOCIATED PROCESSING TOOL
失效
循环自动限定CMP去除和相关加工工具
- 专利标题: CYCLIC SELF-LIMITING CMP REMOVAL AND ASSOCIATED PROCESSING TOOL
- 专利标题(中): 循环自动限定CMP去除和相关加工工具
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申请号: US12761110申请日: 2010-04-15
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公开(公告)号: US20110256802A1公开(公告)日: 2011-10-20
- 发明人: Rajiv Singh , Deepika Singh , Abhudaya Mishra
- 申请人: Rajiv Singh , Deepika Singh , Abhudaya Mishra
- 申请人地址: US FL Gainesville US FL Gainesville
- 专利权人: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.,SINMAT, INC.
- 当前专利权人: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.,SINMAT, INC.
- 当前专利权人地址: US FL Gainesville US FL Gainesville
- 主分类号: B24B1/00
- IPC分类号: B24B1/00
摘要:
A cyclic method of chemical mechanical polishing (CMP) a wafer having a surface includes placing the wafer on a platen in a CMP apparatus and then performing a multi-step CMP comprising process. The multi-step CMP process includes delivering a first chemical composition onto the wafer while on the platen for a first time duration, and without removing the wafer from the platen, delivering a second chemical composition different from the first composition onto the wafer for a second time duration after the first time duration. The multi-step CMP comprising process includes CMP removal using a slurry during one of the first and second time durations and a non-polishing process during the other of the first and second time durations. The multi-step CMP comprising process is repeated a plurality of times.
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