Invention Grant
US07375352B2 Photomask defect correction method employing a combined device of a focused electron beam device and an atomic force microscope 有权
使用聚焦电子束装置和原子力显微镜的组合装置的光掩模缺陷校正方法

Photomask defect correction method employing a combined device of a focused electron beam device and an atomic force microscope
Abstract:
In order to make it possible to improve throughput of AFM scratch processing, enable correction of small defects in clear defect correction with a high degree of precision, and enable correction in a shorter period of time in the event of overcutting by AFM scratch processing, throughput of AFM scratch processing is increased by maximizing high-resolution of the electron beam device and minimizing the time taken in observations using a device incorporating both an electro-optical system and an AFM head in a vacuum, correcting small clear defects with high precision by eliminating portions left over from AFM scratch processing after applying a clear defect correction film using an electron beam while providing light-blocking film raw material, and correction in a short time is made possible by eliminating portions remaining using AFM scratch processing after applying a clear defect correction film using an electron beam while providing light-blocking film raw material also in cases of overcutting in AFM scratch processing.
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