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    • 1. 发明公开
    • 자동화라인에서 웨이퍼의 품질관리를 위한 방법 및 장치
    • 一种用于在线质量控制的方法和装置
    • KR1020090132598A
    • 2009-12-30
    • KR1020097021304
    • 2008-03-08
    • 오스타펜코, 세르게이
    • 오스타펜코,세르게이
    • G01N29/04H01L21/66
    • H01L22/12G01N29/045G01N29/12G01N29/348G01N29/4436G01N29/4445G01N2291/2697
    • A method and apparatus for in-line mechanical quality control of wafers, the method allows for fast detection of cracks including the determination of their size and position on a wafer. The method comprises steps of coupling the wafer and an actuator and exciting a superposition of ultrasonic vibrations in the wafer by sweeping the frequency of the actuator simultaneously around at least two predetermined resonance peaks, recording the resonance frequency, amplitude and bandwidth of resonant frequency curves and comparing that with the resonance frequency, amplitude and bandwidth of reference frequency curves recorded for a mechanically sound crack-free standard wafer. Based on the comparison a reject-accept command is generated using a statistical rejection algorithm.
    • 一种用于晶片的在线机械质量控制的方法和装置,该方法允许快速检测裂纹,包括其在晶片上的尺寸和位置的确定。 该方法包括以下步骤:通过在至少两个预定的谐振峰值周围同时扫描致动器的频率,记录共振频率曲线的谐振频率,振幅和带宽,并且使谐振频率曲线的共振频率,幅度和带宽同时地将晶片和致动器耦合并激发超声振动的叠加, 将其与针对机械无声无裂纹标准晶片记录的参考频率曲线的共振频率,幅度和带宽进行比较。 基于比较,使用统计拒绝算法生成reject-accept命令。