Patent ID: 8473086

Claim:
A substrate reworking system, comprising: defect information acquisition means for acquiring defect information for an entire region on a target substrate; reworking means including at least one liquid drop ejection means for dispensing a liquid drop to a defective part on the target substrate based on the defect information acquired by the defect information acquisition means; and rework determining means for determining, based on the defect information acquired by the defect information acquisition means, whether the reworking means needs to perform reworking and whether the target substrate should be reworked, wherein: the rework determining means includes: identifying means for identifying a defect to be reworked by the liquid drop ejection means based on the defect information; and calculation means for estimating a time interval between a first ejection timing and a next, second ejection timing for the liquid drop ejection means; and the rework determining means determines, based on the time interval, whether the reworking is needed.