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    • 7. 发明授权
    • Apparatus and method for electrical determination of delamination at one
or more interfaces within a semiconductor wafer
    • 用于在半导体晶片内的一个或多个界面处电分离的电测定装置和方法
    • US6066561A
    • 2000-05-23
    • US995260
    • 1997-12-19
    • Kiran KumarDavid J. Heine
    • Kiran KumarDavid J. Heine
    • H01L21/66H01L21/00
    • H01L22/12
    • An apparatus and method are presented for electrically determining whether delamination has occurred at one or more interfaces within a semiconductor wafer. The semiconductor wafer includes a test structure formed within dielectric layers upon an upper surface of a semiconductor substrate. The test structure includes an electrically conductive structure, a pair of electrically conductive contact plugs, and a probe pad. The conductive structure is formed within an opening in a first dielectric layer, and is in electrical contact with the upper surface of the semiconductor substrate. The conductive structure is preferably made up of the same vertical stack of layers of selected electrically conductive materials used to form interconnects within the semiconductor wafer. A second dielectric layer if formed over the first dielectric layer and the conductive structure. The pair of electrically conductive contact plugs extend vertically through respective holes in the second dielectric layer. An electrically conductive probe pad is formed upon an upper surface of the second dielectric layer and extends between the pair of contact plugs. Each contact plug is in electrical contact with the probe pad and the electrically conductive structure. During testing, a probe of a measurement device is brought into contact with the probe pad. The measurement device measures the electrical resistance and/or reactance between the probe pad and the semiconductor substrate. The resulting resistance and/or reactance measurement may be compared to an expected resistance and/or reactance value to determine if delamination has occurred at one or more interfaces within the semiconductor wafer.
    • 提出了用于电学确定半导体晶片内的一个或多个界面是否发生分层的装置和方法。 半导体晶片包括在半导体衬底的上表面上的电介质层内形成的测试结构。 测试结构包括导电结构,一对导电接触插塞和探针垫。 导电结构形成在第一电介质层的开口内,与半导体衬底的上表面电接触。 导电结构优选地由用于在半导体晶片内形成互连的所选择的导电材料的相同的垂直堆叠堆叠构成。 如果形成在第一介电层和导电结构上的第二介电层。 一对导电接触插塞通过第二电介质层中的相应孔垂直延伸。 导电探针垫形成在第二电介质层的上表面上并在该对接触插塞之间延伸。 每个接触插塞与探针垫和导电结构电接触。 在测试期间,测量装置的探针与探针垫接触。 测量装置测量探针焊盘和半导体衬底之间的电阻和/或电抗。 可以将所得到的电阻和/或电抗测量与期望的电阻和/或电抗值进行比较,以确定在半导体晶片内的一个或多个界面处是否发生分层。