Project supported by the Major Program of National Natural Science Foundation of China(No.50390061);the National Science and Technology Major Project,China(No.2009ZX02011)
A signal processing method for the friction-based endpoint detection system of a chemical mechanical polishing (CMP) process is presented. The signal process method uses the wavelet threshold denoising method to red...
supported by the Major Project of National Natural Science Foundation of China(No.50390061);the Key Project of Science and Technology R & D Program of Henan Province,China(No.102102210405);the Research Project Program of Natural Science of the Education Department of Henan Province,China(No.2009A460004);the Scientific Research Foundation of Henan Institute of Science and Technology for High Level Scholar;the Science and Technology Innovation Program of Henan Institute of Science and Technology.
Distribution forms of abrasives in the chemical mechanical polishing(CMP) process are analyzed based on experimental results.Then the relationships between the wafer,the abrasive and the polishing pad are analyzed b...