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METHOD AND APPARATUS FOR CONSTANT ANGLE OF INCIDENCE SCANNING IN ION BEAM SYSTEMS

阅读:457发布:2021-09-29

专利汇可以提供METHOD AND APPARATUS FOR CONSTANT ANGLE OF INCIDENCE SCANNING IN ION BEAM SYSTEMS专利检索,专利查询,专利分析的服务。并且An ion beam (18) is scanned over a semiconductor wafer (30) in an ion implanter by deforming the wafer to have a concave contour selected to provide a constant angle of incidence of the scanned beam on the wafer surface. In one embodiment, the beam is scanned along one axis with a constant angle of incidence and is scanned about a center of deflection (46) along a second orthogonal axis. The wafer is deformed to have a concave cylindrical contour. The wafer can be clamped to a concave cylindrical platen surface by electrostatic or peripheral clamping. In a second embodiment, the beam is scanned in two dimensions about a center of deflection and the wafer is deformed to have a concave spherical contour. The wafer can be clamped to a concave spherical platen surface by electrostatic clamping.,下面是METHOD AND APPARATUS FOR CONSTANT ANGLE OF INCIDENCE SCANNING IN ION BEAM SYSTEMS专利的具体信息内容。

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