发明申请
US20080049226A1 APPARATUS AND METHODS FOR DETECTING OVERLAY ERRORS USING SCATTEROMETRY 有权
用于使用散射检测来检测重叠错误的装置和方法

APPARATUS AND METHODS FOR DETECTING OVERLAY ERRORS USING SCATTEROMETRY
摘要:
Disclose is a combined scatterometry mark comprising a scatterometry critical dimension (CD) or profile target capable of being measured to determine CD or profile information and a scatterometry overlay target disposed over the scatterometry CD or profile target, the scatterometry overlay target cooperating with the scatterometry CD or profile target to form a scatterometry mark capable of being measured to determine overlay.
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