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    • 7. 发明申请
    • Apparatus and method for measuring a thickness of a substrate
    • 用于测量衬底厚度的装置和方法
    • US20050083539A1
    • 2005-04-21
    • US10912559
    • 2004-08-06
    • Hwan-Shik ParkSun-Yong ChoiChung-Sam JunKye-Weon Kim
    • Hwan-Shik ParkSun-Yong ChoiChung-Sam JunKye-Weon Kim
    • G01B11/06G01B11/28
    • G01B11/06
    • An apparatus and method of measuring the thickness of a substrate. A first light is reflected from a standard sample having a known thickness. The light is concentrated through the light-focusing lens. The first light is converted into a first electrical signal by a detector responding to a light intensity of the concentrated first light. A second light is reflected from a substrate, and then is concentrated through the light-focusing lens. The second light is converted into a second electrical signal by the detector responding to a light intensity of the concentrated second light. An operating unit determines first and second peak values from the first and second electrical signals, respectively. The operating unit calculates the thickness of the substrate by using a standard distance corresponding to the first peak value, a moving distance of the substrate corresponding to the second peak value, and the known thickness of the standard sample.
    • 一种测量衬底厚度的装置和方法。 第一光从具有已知厚度的标准样品反射。 光通过光聚焦透镜集中。 通过响应于集中的第一光的光强度的检测器将第一光转换成第一电信号。 第二个光从衬底反射,然后通过光聚焦透镜进行浓缩。 通过检测器响应于集中的第二光的光强度将第二光转换成第二电信号。 操作单元分别从第一和第二电信号确定第一和第二峰值。 操作单元通过使用与第一峰值相对应的标准距离,对应于第二峰值的基板的移动距离和标准样品的已知厚度来计算基板的厚度。