发明授权
- 专利标题: True defect monitoring through repeating defect deletion
- 专利标题(中): 通过重复缺陷删除进行真实的缺陷监测
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申请号: US10064908申请日: 2002-08-28
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公开(公告)号: US06684164B1公开(公告)日: 2004-01-27
- 发明人: Kung-Yi Chen , Wei-Ming Chen , Shu-Ling Ku , Mao-I Ting , Lien-Che Ho
- 申请人: Kung-Yi Chen , Wei-Ming Chen , Shu-Ling Ku , Mao-I Ting , Lien-Che Ho
- 主分类号: G06K964
- IPC分类号: G06K964
摘要:
A method of deleting repeating defects having no effect on product yield of a wafer so that true defects on the wafer are more readily found. A wafer having a plurality of dies thereon is provided. The wafer is scanned to find any repeating defects. If the repeating defects have no effect on the product yield, the area around the repeating defects is marked out as “don't care” region. Another wafer scanning operation to find the true defects is subsequently conducted by scanning the region outside the “don't care” region.
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