Invention Grant
- Patent Title: Auto-calibrated process independent feedforward control for processing substrates
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Application No.: US16130454Application Date: 2018-09-13
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Publication No.: US10971384B2Publication Date: 2021-04-06
- Inventor: Anthony Paul Van Selow
- Applicant: LAM RESEARCH CORPORATION
- Applicant Address: US CA Fremont
- Assignee: LAM RESEARCH CORPORATION
- Current Assignee: LAM RESEARCH CORPORATION
- Current Assignee Address: US CA Fremont
- Main IPC: H01L21/67
- IPC: H01L21/67 ; G05B19/418 ; C23C16/52

Abstract:
A substrate processing system to process a substrate includes a sensor to generate sensed values of a parameter of the substrate processing system. An actuator adjusts the parameter of the substrate processing system. A controller communicates with the sensor and the actuator and is configured to process a first substrate using the sensed values to adjust control values for controlling the actuator without feedforward control during a process. The sensed values are delayed and cause instability in the parameter. The controller is further configured to automatically calibrate feedforward values for processing a second substrate based on the sensed values and the control values and process the second substrate while controlling the actuator using the feedforward values.
Public/Granted literature
- US20200090968A1 AUTO-CALIBRATED PROCESS INDEPENDENT FEEDFORWARD CONTROL Public/Granted day:2020-03-19
Information query
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