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    • 2. 发明公开
    • 검사 시스템 및 장치
    • 检查系统和装置
    • KR1020070112156A
    • 2007-11-22
    • KR1020077020655
    • 2006-03-06
    • 큐셉트 테크놀로지스 인크.
    • 스틸엠.,브랜던호손,제프리앨런
    • G01N27/00H01L21/66
    • G01R31/312G01N27/002G01N2033/0095
    • A method and system for identifying a defect or contamination on a surface of a sample. The system operates by detecting changes in work function across a surface via both vCPD and nvCPD. It utilizes a non-vibrating contact potential difference (nvCPD) sensor for imaging work function variations over an entire sample. The data is differential in that it represents changes in the work function (or geometry or surface voltage) across the surface of a sample. A vCPD probe is used to determine absolute CPD data for specific points on the surface of the sample. The combination of vibrating and non-vibrating CPD measurement modes allows the rapid imaging of whole-sample uniformity, and the ability to detect the absolute work function at one or more points.
    • 用于识别样品表面上的缺陷或污染物的方法和系统。 该系统通过检测通过vCPD和nvCPD的表面上的功函数的变化来进行操作。 它使用非振动接触电位差(nvCPD)传感器来对整个样品的功函数变化进行成像。 数据是差异的,因为它表示样品表面上的功函数(或几何或表面电压)的变化。 vCPD探针用于确定样品表面上特定点的绝对CPD数据。 振动和非振动CPD测量模式的组合允许全样本均匀性的快速成像,以及在一个或多个点处检测绝对功能的能力。