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    • 5. 发明公开
    • 커플링된 에디 센서에 의해 필름 두께를 측정하기 위한방법 및 장치
    • 通过联接EDDY传感器测量薄膜厚度的方法和装置
    • KR1020060116847A
    • 2006-11-15
    • KR1020067013316
    • 2004-12-06
    • 어플라이드 머티어리얼스, 인코포레이티드
    • 고트키스예히엘키슬러로드니오윅자르즈알렉산더프로인드찰스
    • G01B7/06G01B7/02
    • G01B7/107G01B7/105G01B2210/44
    • A method for minimizing measuring spot size and noise during film thickness measurement is provided. The method initiates with locating a first eddy current sensor directed toward a first surface associated with a conductive film. The method includes locating. a second eddy current sensor directed toward a second surface associated with the conductive film. The first and second eddy current sensors may share a common axis or be offset from each other. The method further includes alternating power supplied to the first eddy current sensor and the second eddy current sensor. In one aspect of the invention, a delay time is incorporated between switching power between the first eddy current sensor and the second eddy current sensor. The method also includes calculating the film thickness measurement based on a combination of signals from the first eddy current sensor and the second eddy current sensor. An apparatus and a system are also provided.
    • 提供了一种在膜厚测量期间最小化测量点尺寸和噪声的方法。 该方法通过定位朝向与导电膜相关联的第一表面的第一涡流传感器来启动。 该方法包括定位。 指向与导电膜相关联的第二表面的第二涡流传感器。 第一和第二涡流传感器可以共享公共轴线或彼此偏移。 该方法还包括提供给第一涡流传感器和第二涡流传感器的交流电力。 在本发明的一个方面,在第一涡流传感器和第二涡流传感器之间的开关功率之间并入延迟时间。 该方法还包括基于来自第一涡流传感器和第二涡流传感器的信号的组合来计算膜厚度测量。 还提供了一种装置和系统。