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    • 1. 发明授权
    • Optical inspection module and method for detecting particles and defects
on substrates in integrated process tools
    • 用于检测集成工艺工具中基板上的颗粒和缺陷的光学检测模块和方法
    • US5909276A
    • 1999-06-01
    • US50267
    • 1998-03-30
    • Patrick D. KinneyNagaraja P. Rao
    • Patrick D. KinneyNagaraja P. Rao
    • G01N21/956G01N21/94G06T1/00H01L21/66G01N21/00
    • G01N21/94G01N21/9501H01L22/12
    • An optical inspection module detects defects on an active surface of a substrate in an integrated process tool system. The optical inspection module includes an enclosure, a substrate holder, a light source, a light beam path, a lens and a photodetector array. The light source has a light beam port. The light beam path extends from the light beam port to the substrate holder and has a grazing angle of incidence with respect to the active surface of the substrate. The light beam path illuminates substantially the entire active surface. The lens is oriented to collect non-secularly reflected light scattered from the light beam path by any defects on the active surface. The photodetector array has a plurality of pixels which are positioned within a focal plane of the lens. Each pixel corresponds to an area on the active surface, and the plurality of pixels together form a field of view that covers substantially the entire active surface.
    • 光学检查模块检测集成处理工具系统中的基板的有效表面上的缺陷。 光学检查模块包括外壳,基板保持器,光源,光束路径,透镜和光电检测器阵列。 光源具有光束端口。 光束路径从光束端口延伸到衬底保持器,并且具有相对于衬底的有源表面的入射角。 光束路径基本上照亮整个有源表面。 该透镜被定向以从活性表面上的任何缺陷收集从光束路径散射的非长期反射光。 光电检测器阵列具有位于透镜的焦平面内的多个像素。 每个像素对应于有源表面上的区域,并且多个像素一起形成覆盖基本上整个有源表面的视场。