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    • 9. 发明专利
    • Method of controlling semiconductor device fabrication
    • 控制半导体器件制造的方法
    • JP2014135497A
    • 2014-07-24
    • JP2014034081
    • 2014-02-25
    • Metryx Ltdメトリックス・リミテッドMetryx Limited
    • ADRIAN KIERMASZ
    • H01L21/02H01L21/66
    • H01L22/12G05B15/02G05B23/024H01L2924/0002H01L2924/00
    • PROBLEM TO BE SOLVED: To increase productivity in a semiconductor device fabrication process.SOLUTION: In a semiconductor wafer fabrication metrology method, process steps are characterized by a change in wafer mass, and thereby mass is used during fabrication as a measurable parameter to implement statistical process control in one or more of process steps. In one aspect, the shape of a measured mass distribution is compared with the shape of a predetermined characteristic mass distribution to monitor the process. A determined empirical relationship between a control variable of the process and the characteristic mass change may enable differences between the measured mass distribution and the characteristic mass distribution to provide information about the control variable. In another aspect, the relative position of an individual measured wafer mass change in a current distribution provides information about individual wafer problems independently from general process problems.
    • 要解决的问题:提高半导体器件制造工艺中的生产率。解决方案:在半导体晶片制造计量方法中,工艺步骤的特征在于晶片质量的变化,从而质量在制造期间被用作可测量的参数以实现统计 一个或多个过程步骤中的过程控制。 在一个方面,将测量的质量分布的形状与预定特征质量分布的形状进行比较以监测该过程。 过程的控制变量与特征质量变化之间确定的经验关系可以使测量的质量分布和特征质量分布之间的差异能够提供关于控制变量的信息。 另一方面,单个测量的晶片质量变化在电流分布中的相对位置提供了关于单个晶片问题的信息,而与一般工艺问题无关。