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US07646003B2 Focusing apparatus and lithography system using the same 有权
聚焦设备和使用它的光刻系统

Focusing apparatus and lithography system using the same
Abstract:
A focusing apparatus and a lithography system using the same capable of adjusting a uniformity of an electromagnetic field by moving a portion of a magnetic field generator. The focusing apparatus may control a path of an electron beam generated from an electron-beam emitter of the lithography system. In the focusing apparatus, a uniformity of the magnetic field in the vacuum chamber may be adjusted through movement of the portion of the magnetic field generator with respect to the vacuum chamber.
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