A wafer handling mechanism is operated to place a wafer on a chuck. A chucking force is then applied to the wafer, whereby wafer support features of the chuck transfer a defect pattern onto a surface of the wafer. The surface of the wafer is analyzed by a defect metrology tool to obtain a mapping of the defect pattern transferred onto the surface of the wafer. A center coordinate of the chuck within a coordinate system of the wafer is determined by analyzing the defect pattern as transferred to the surface of the wafer. A spatial offset between the center coordinate of the chuck and the center of the wafer is determined. The spatial offset is used to adjust the wafer handling mechanism so as to enable alignment of the center of the wafer to the center coordinate of the chuck.
申请公布号
WO2010067284(A3)
申请公布日期
2010.09.30
申请号
WO2009IB55503
申请日期
2009.12.04
申请人
LAM RESEARCH CORPORATION;O'NEILL, ROBERT GRIFFITH;LUQUE, JORGE;CHOU, SHANG-I;SINGH, HARMEET
发明人
O'NEILL, ROBERT GRIFFITH;LUQUE, JORGE;CHOU, SHANG-I;SINGH, HARMEET