发明授权
US06395567B1 Process control using ideal die data in an optical comparator scanning system 失效
在光学比较器扫描系统中使用理想的裸片数据进行过程控制

  • 专利标题: Process control using ideal die data in an optical comparator scanning system
  • 专利标题(中): 在光学比较器扫描系统中使用理想的裸片数据进行过程控制
  • 申请号: US09109114
    申请日: 1998-07-02
  • 公开(公告)号: US06395567B1
    公开(公告)日: 2002-05-28
  • 发明人: Paul J. SteffanAllen S. Yu
  • 申请人: Paul J. SteffanAllen S. Yu
  • 主分类号: G01R3126
  • IPC分类号: G01R3126
Process control using ideal die data in an optical comparator scanning system
摘要:
A method of detecting defects on dice in semiconductor wafer wherein each dice in a layer is scanned and data from each dice is compared to data collected from an ideal dice obtained from the same level on a pre-production wafer. The data from each dice is compared in an optical comparator with data from the ideal dice stored in a register.
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