System and Method for Online End Point Detection for use in Chemical Mechanical Planarization
    3.
    发明申请
    System and Method for Online End Point Detection for use in Chemical Mechanical Planarization 有权
    用于化学机械平面化的在线端点检测系统和方法

    公开(公告)号:US20060100821A1

    公开(公告)日:2006-05-11

    申请号:US11164048

    申请日:2005-11-08

    IPC分类号: G06F15/00

    CPC分类号: B24B37/013

    摘要: The present invention is an online methodology for end point detection for use in a chemical mechanical planarization process which is both robust and inexpensive while overcoming some of the drawbacks of the existing end point detection approaches currently known in the art. The present invention provides a system and method for identifying a significant event in a chemical mechanical planarization process including the steps of decomposing coefficient of friction data acquired from a chemical mechanical planarization process using wavelet-based multiresolution analysis, and applying a sequential probability ratio test for variance on the decomposed data to identify a significant event in the chemical mechanical planarization process.

    摘要翻译: 本发明是一种在化学机械平面化方法中使用的端点检测的在线方法,其在克服本领域当前已知的端点检测方法的一些缺点的同时鲁棒且廉价。 本发明提供一种用于识别化学机械平面化处理中的重要事件的系统和方法,包括以下步骤:使用基于小波的多分辨率分析从化学机械平面化处理获得的摩擦系数数据分解,并对 在分解数据上的方差来识别化学机械平面化过程中的重大事件。