- 专利标题: DETECTING AND CORRECTING SUBSTRATE PROCESS DRIFT USING MACHINE LEARNING
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申请号: US17379728申请日: 2021-07-19
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公开(公告)号: US20220066411A1公开(公告)日: 2022-03-03
- 发明人: Upendra V. Ummethala , Blake Erickson , Prashanth Kumar , Michael Kutney , Steven Trey Tindel , Zhaozhao Zhu
- 申请人: APPLIED MATERIALS, INC.
- 申请人地址: US CA Santa Clara
- 专利权人: APPLIED MATERIALS, INC.
- 当前专利权人: APPLIED MATERIALS, INC.
- 当前专利权人地址: US CA Santa Clara
- 主分类号: G05B19/401
- IPC分类号: G05B19/401 ; G06N20/00 ; G06N5/04
摘要:
Methods and systems for detecting and correcting substrate process drift using machine learning are provided. Data associated with processing each of a first set of substrates at a manufacturing system according to a process recipe is provided as input to a trained machine learning model. One or more outputs are obtained from the trained machine learning model. An amount of drift of a first set of metrology measurement values for the first set of substrates from a target metrology measurement value is determined from the one or more outputs. Process recipe modification identifying one or more modifications to the process recipe is also determined. For each modification, an indication of a level of confidence that a respective modification to the process recipe satisfies a drift criterion for a second set of substrates is determined. In response to an identification of the respective modification with a level of confidence that satisfies a level of confidence criterion, the process recipe is updated based on the respective modification.
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