Invention Grant
- Patent Title: Optimizing the utilization of metrology tools
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Application No.: US16101057Application Date: 2018-08-10
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Publication No.: US10725385B2Publication Date: 2020-07-28
- Inventor: Tsachy Holovinger , Liran Yerushalmi , David Tien , DongSub Choi
- Applicant: KLA-Tencor Corporation
- Applicant Address: US CA Milpitas
- Assignee: KLA-Tencor Corporation
- Current Assignee: KLA-Tencor Corporation
- Current Assignee Address: US CA Milpitas
- Agency: Suiter Swantz pc llo
- Main IPC: H01L21/66
- IPC: H01L21/66 ; G03F7/20 ; G03F9/00

Abstract:
A method may include, but is not limited to, receiving a measurement including a metrology parameter for a layer of a metrology target and an alignment mark from an overlay metrology tool prior to a lithography process; deriving a merit figure from the metrology parameter and the alignment mark; deriving a correction factor from the merit figure; providing the correction factor to the lithography process via a feed forward process; receiving an additional measurement including an additional metrology parameter for the layer and an additional layer from an additional overlay metrology tool after the lithography process; deriving an adjustment from the additional metrology parameter; and providing the adjustment to the lithography process via a feedback process.
Public/Granted literature
- US20180348649A1 OPTIMIZING THE UTILIZATION OF METROLOGY TOOLS Public/Granted day:2018-12-06
Information query
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