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    • 1. 发明授权
    • Inspection method, inspection apparatus and method of production of
semiconductor device using them
    • 使用它们的半导体器件的检查方法,检查装置和制造方法
    • US5936726A
    • 1999-08-10
    • US913392
    • 1997-09-09
    • Kazuo TakedaHidetsugu IshidaAtsushi Hiraiwa
    • Kazuo TakedaHidetsugu IshidaAtsushi Hiraiwa
    • G01N21/94G01N21/00
    • G01N21/94
    • An inspection method and apparatus for discriminating the foreign particles on the surface of a sample from the foreign particles or defects within the sample, and a semiconductor-device producing method using the inspection method and apparatus. The inspection apparatus includes a light source, a first optical system that causes the light from the source to be directed to the sample, a second optical system for condensing the light coming back from the sample, a polarizing prism for separating the condensed light into polarized components, and optical detectors, for detecting the polarized components. The two optical systems, are arranged for their optical axes to make an angle of 50.degree. to 120.degree. relative to each other. The foreign particles on the surface of the sample and the foreign particles or defects within the sample are respectively discriminated from each other as side scattered light and backward scattered light by utilizing the difference between the intensity ratios of the polarized light components.
    • PCT No.PCT / JP95 / 00398 Sec。 371日期1997年9月9日 102(e)日期1997年9月9日PCT 1996年3月10日PCT公布。 第WO96 / 28721号公报 日期1996年9月19日一种用于鉴别样品表面上的异物与样品中的异物或缺陷的检查方法和装置,以及使用检查方法和装置的半导体器件制造方法。 检查装置包括光源,使来自源的光被引导到样本的第一光学系统,用于聚集从样品回来的光的第二光学系统,用于将聚光分离成偏振光的偏光棱镜 组件和光学检测器,用于检测偏振分量。 两个光学系统被布置成使它们的光轴相对于彼此成50°到120°的角度。 通过利用偏振光分量的强度比之间的差异,将样品表面上的杂质颗粒和样品中的异物或缺陷分别彼此区分为侧向散射光和反向散射光。