Surface defect inspection device and shading correction method therefor
    7.
    发明授权
    Surface defect inspection device and shading correction method therefor 失效
    表面缺陷检查装置及其阴影校正方法

    公开(公告)号:US5880828A

    公开(公告)日:1999-03-09

    申请号:US898598

    申请日:1997-07-22

    IPC分类号: G01N21/94 G01N21/00

    CPC分类号: G01N21/94

    摘要: A surface defect inspection device according to the present invention is provided with an average value calculating means in which an article corresponding to an object to be inspected having a multiplicity of substantially uniformly distributed standard particles deposited thereon is scanned in a main scanning direction as a defect inspection object, detection values of the standard particles at every detecting pixel are obtained based on detection signals obtained from an optical sensor at respective scanning positions while assuming the standard particles as being defects and average values of every detecting pixel with regard to the detection values obtained at the respective scanning positions are calculated, and a shading correction means in which detection values of every detecting pixel obtained when the object to be inspected is inspected are subjected to shading correction for every detecting pixel based on the calculated average values of every detecting pixel.

    摘要翻译: 根据本发明的表面缺陷检查装置设置有平均值计算装置,其中与主要扫描方向上扫描具有沉积在其上的多个大致均匀分布的标准颗粒的待检查对象的物品作为缺陷 检测对象中,基于从各个扫描位置处的光学传感器获得的检测信号,将标准粒子作为缺陷而得到的各检测像素的标准粒子的检测值,以及所获取的检测值的每个检测像素的平均值 计算各扫描位置,并且根据所计算出的每个检测像素的平均值,对检测对象物检测出的每个检测像素的检测值进行阴影校正,对每个检测像素进行阴影校正。

    Extraneous substance inspection apparatus for patterned wafer
    8.
    发明授权
    Extraneous substance inspection apparatus for patterned wafer 失效
    用于图案化晶片的外来物质检查装置

    公开(公告)号:US5724132A

    公开(公告)日:1998-03-03

    申请号:US736582

    申请日:1996-10-24

    CPC分类号: G01R31/311 H01L22/12

    摘要: An extraneous substance inspection apparatus includes a level conversion circuit for converting a level of an extraneous substance detection signal obtained from a position in a first chip into one of multi-valued levels. A judging circuit determines the existence or absence of an extraneous substance by comparing a signal indicative of one of the multi-valued levels with another signal indicative of a converted level obtained by converting a detection signal detected at a similar position in another chip adjacent to the first chip.

    摘要翻译: 一种外来物质检查装置包括:电平转换电路,用于将从第一芯片中的位置获得的外来物质检测信号的电平转换为多值电平。 判断电路通过将指示多值电平之一的信号与表示通过转换在与其相邻的另一芯片中的相似位置处检测到的检测信号而获得的转换电平的另一信号进行比较来确定外来物质的存在或不存在 第一芯片