发明名称 Surface inspecting apparatus and surface inspecting method
摘要 A surface inspecting apparatus includes an illumination optical system irradiating linearly polarized light to a wafer surface under a plurality of inspection conditions; an imaging optical system capturing an image of the wafer formed by polarization components having an oscillation direction different from that of the linearly polarized light as part of reflected light from the wafer surface irradiated by the linearly polarized light under the plurality of inspection conditions; and an image-processing apparatus for extracting for individual pixels an image having the smallest signal intensity from among images of the wafer captured under the plurality of inspection conditions by the imaging optical system, and for inspecting for the presence of defects in a repeated pattern of the wafer based on an inspection image of the wafer generated by connecting each of the extracted pixels.
申请公布号 US8223328(B2) 申请公布日期 2012.07.17
申请号 US201113241029 申请日期 2011.09.22
申请人 FUKAZAWA KAZUHIKO;NIKON CORPORATION 发明人 FUKAZAWA KAZUHIKO
分类号 G01N21/00 主分类号 G01N21/00
代理机构 代理人
主权项
地址