What is reclaimed wafer?

The source of the reclaimed wafers comes from the monitor wafers and the dummy wafers but not the defect wafers in the semiconductor fab. The reclamation of these monitor wafers and dummy wafer to refurbish can dramatically lower the running cost of a factory.

The reclaimed wafers can be categorized according to functions as figure 1 and the reclamation system is shown as figure 2.

The features of the reclaimed wafer

The features of the Kinik reclaimed wafers are refurbished by ductile mode grinding used to replace traditional lapping to lower the strained thickness on the surface and chemical contamination. The ductile mode grinding is the leading-edge process for the high precious reclaimed wafers. The comparative illustration of the damage layer induced by the ductile mode grinding and the lapping process is shown as figure 4 and 5.

Products：

• 8" and 12" reclaimed wafers
• 8" and 12" test and prime wafers
• ultra-flatness wafer
• diamond wafer