发明授权
US06374397B1 Lot determination apparatus, lot determination method, and recording medium for storing the method
失效
批量确定装置,批次确定方法和用于存储该方法的记录介质
- 专利标题: Lot determination apparatus, lot determination method, and recording medium for storing the method
- 专利标题(中): 批量确定装置,批次确定方法和用于存储该方法的记录介质
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申请号: US09332984申请日: 1999-06-15
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公开(公告)号: US06374397B1公开(公告)日: 2002-04-16
- 发明人: Yuki Miyamoto , Takeo Ishibashi
- 申请人: Yuki Miyamoto , Takeo Ishibashi
- 优先权: JP10-372983 19981228
- 主分类号: G06F1750
- IPC分类号: G06F1750
摘要:
A lot determination apparatus and method and a recording medium having the lot determination method recorded thereon, wherein there can be realized a reduction in the number of times wafers are re-subjected to photolithography and prevention of elimination of a chip lot in a subsequent step, by determination of whether or not a chip is conforming through comprehensive determination of results of a plurality of inspections such as an overlay inspection, an etched pattern inspection, and a resist pattern inspection. A determination is made as to whether or not a lot is defective by comprehensive determination of results of a plurality of inspection processes, thereby preventing elimination of the lot as being nonconforming. As a result, specifications for inspections can be relaxed, which in turn enables a reduction in a reprocessing ratio. Further, no short circuit arises between the first and second patterns while determination equations are satisfied, and elimination of a lot in a subsequent process can be prevented. Link check may be carried out not only for each set of measurement points but also on the basis of analysis of results of all the measurement points. Determination equations may be more generalized.
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