Method for automatic determination of substrates states in plasma processing chambers
    32.
    发明授权
    Method for automatic determination of substrates states in plasma processing chambers 失效
    自动测定等离子体处理室中基片状态的方法

    公开(公告)号:US07393459B2

    公开(公告)日:2008-07-01

    申请号:US10939158

    申请日:2004-09-10

    IPC分类号: G01L21/30 H01L21/66

    摘要: A method for automatic determination of a state of a substrate in a plasma processing chamber is provided. Substrate reflectance data is collected in a processing chamber prior to processing to be analyzed with reference reflectance data to determine if the substrate state meets a control criterion. The substrate state may define the thickness and the qualities of the films on the substrate, the critical dimensions of the different layers on the substrate. The reflectance data is analyzed using a multi-variant analysis technique, such as principle component analysis. In addition to analyzing substrate state prior to processing, substrate reflectance could also be collected in a processing chamber during processing to be analyzed with reference reflectance data to further determine if the substrate state and/or the substrate processing are meeting a control criterion.

    摘要翻译: 提供了一种用于自动确定等离子体处理室中的基板的状态的方法。 在处理之前将基板反射率数据收集在处理室中,以用参考反射率数据进行分析,以确定基板状态是否满足控制标准。 衬底状态可以限定衬底上的膜的厚度和质量,衬底上不同层的临界尺寸。 使用多变量分析技术(如主成分分析)分析反射率数据。 除了在处理之前分析衬底状态之外,衬底反射率也可以在处理期间被收集在处理室中,以用参考反射率数据进行分析,以进一步确定衬底状态和/或衬底处理是否满足控制标准。