Invention Grant
- Patent Title: Prediction based chucking and lithography control optimization
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Application No.: US14656422Application Date: 2015-03-12
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Publication No.: US10036964B2Publication Date: 2018-07-31
- Inventor: Bin-Ming Benjamin Tsai , Oreste Donzella , Pradeep Vukkadala , Jaydeep Sinha
- 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: G06F17/50
- IPC: G06F17/50 ; G03F7/20

Abstract:
Prediction based systems and methods for optimizing wafer chucking and lithography control are disclosed. Distortions predicted to occur when a wafer is chucked by a chucking device are calculated and are utilized to control chucking parameters of the chucking device. Chucking parameters may include chucking pressures and chucking sequences. In addition, predicted distortions may also be utilized to facilitate application of anticipatory corrections. Controlling chucking parameters and/or applying anticipatory corrections help reducing or minimizing overlay errors.
Public/Granted literature
- US20160239600A1 Prediction Based Chucking and Lithography Control Optimization Public/Granted day:2016-08-18
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