- 专利标题: Methods for real-time pulse measurement and pulse timing adjustment to control plasma process performance
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申请号: US17318116申请日: 2021-05-12
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公开(公告)号: US12057293B2公开(公告)日: 2024-08-06
- 发明人: Merritt Funk , Peter Ventzek , Alok Ranjan
- 申请人: Tokyo Electron Limited
- 申请人地址: JP Tokyo
- 专利权人: Tokyo Electron Limited
- 当前专利权人: Tokyo Electron Limited
- 当前专利权人地址: JP Tokyo
- 代理机构: Egan, Enders & Huston LLP.
- 主分类号: H05H1/24
- IPC分类号: H05H1/24 ; H01J37/32 ; H01L21/66 ; H01L21/67
摘要:
Various embodiments of systems and methods are described herein for controlling a pulsed plasma. Pulse timing parameters (e.g., the pulse on-time and/or the pulse-off time) of the plasma generation source may be controlled based on the measurement data received from measurement device(s), to control the plasma exposure of the substrate during a sequence of dynamically controlled pulses within the plasma process chamber. In addition or alternatively, pulse timing parameters (e.g., the pulse on-time and/or the pulse-off time) can be applied to the source power, bias power, and/or both based on the measurement data received from measurement device(s), to control a plasma exposure of the substrate. The pulse timing changes may be made in a feedforward or feedback manner.
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