Model analysis and experimental investigation of the friction torque during the CMP process |
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| Authors: | Guo Dongming Xu Chi Kang Renke Jin Zhuji |
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| Affiliation: | Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | A model for calculating friction torque during the chemical mechanical polishing(CMP) process is presented,and the friction force and torque detection experiments during the CMP process are carried out to verify the model.The results show that the model can well describe the feature of friction torque during CMP processing. The research results provide a theoretical foundation for the CMP endpoint detection method based on the change of the torque of the polishing head rotational spindle. |
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| Keywords: | CMP friction torque endpoint detection |
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