发明授权
US06684164B1 True defect monitoring through repeating defect deletion 有权
通过重复缺陷删除进行真实的缺陷监测

True defect monitoring through repeating defect deletion
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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