Radiant energy – Irradiation of objects or material – Irradiation of semiconductor devices
Reexamination Certificate
2007-10-02
2007-10-02
Berman, Jack I. (Department: 2881)
Radiant energy
Irradiation of objects or material
Irradiation of semiconductor devices
C250S491100, C250S492300, 43, C178S019010, C355S053000
Reexamination Certificate
active
11320399
ABSTRACT:
A method for correcting angle zero position of an ion implantation equipment. The method includes loading a semiconductor wafer into the ion implantation equipment, implanting ions into the wafer with varying angle, measuring thermal wave and sheet resistance value of the wafer, and correcting the angle zero position with reference to points at which the measured thermal wave or sheet resistance value is minimized.
REFERENCES:
patent: 6828572 (2004-12-01), Reece et al.
patent: 6984832 (2006-01-01), Halling et al.
patent: 2006/0138355 (2006-06-01), Yue et al.
Berman Jack I.
Dongbu Electronics Co. Ltd.
Hashmi Zia R.
Lowe Hauptman & Berner LLP
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