Method for detecting epitaxial (EPI) induced buried layer shifts in semiconductor devices
    1.
    发明授权
    Method for detecting epitaxial (EPI) induced buried layer shifts in semiconductor devices 有权
    在半导体器件中检测外延(EPI)感应埋层移位的方法

    公开(公告)号:US07112953B2

    公开(公告)日:2006-09-26

    申请号:US11049138

    申请日:2005-02-02

    IPC分类号: G01R31/02

    摘要: The present invention provides a method for monitoring a shift in a buried layer in a semiconductor device. The method for monitoring the shift in the buried layer, among other steps, includes forming a buried layer test structure in, on or over a substrate of a semiconductor device, the buried layer test structure including a first test buried layer located in or on the substrate, the first test buried layer shifted a predetermined distance with respect to a first test feature. The buried layer test structure further includes a second test buried layer lodated in the substrate, the second test buried layer shifted a predetermined but different distance with respect to a second test feature. The method for monitoring the shift in the buried layer may further include applying a test signal to the buried layer test structure to determine an actual shift relative to the predetermined shift.

    摘要翻译: 本发明提供了一种用于监测半导体器件中的掩埋层的偏移的方法。 用于监测掩埋层中的偏移的方法以及其它步骤包括在半导体器件的衬底上或上方形成掩埋层测试结构,所述掩埋层测试结构包括位于第一测试掩埋层中或其上的第一测试掩埋层 第一测试掩埋层相对于第一测试特征偏移预定距离。 掩埋层测试结构还包括置于衬底中的第二测试掩埋层,第二测试掩埋层相对于第二测试特征偏移预定但不同的距离。 用于监测掩埋层中的偏移的方法还可以包括将测试信号施加到掩埋层测试结构以确定相对于预定位移的实际偏移。