Invention Grant
- Patent Title: Apparatus and method for plasma processing
- Patent Title (中): 等离子体处理装置及方法
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Application No.: US12536137Application Date: 2009-08-05
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Publication No.: US08574446B2Publication Date: 2013-11-05
- Inventor: Tamotsu Morimoto , Takahiro Murakami
- Applicant: Tamotsu Morimoto , Takahiro Murakami
- Applicant Address: JP Tokyo
- Assignee: Tokyo Electron Limited
- Current Assignee: Tokyo Electron Limited
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2003-063011 20030310
- Main IPC: H01L21/00
- IPC: H01L21/00 ; C23F1/00 ; B44C1/22

Abstract:
At the time of plasma igniting or during plasma processing, only optimizing the distance between electrodes in each case caused a limitation to the prevention of charging damage. To resolve this, a novel plasma processing method employs a plasma processing apparatus which includes an upper electrode to which first high-frequency power is applied, a lower electrode to which second high-frequency power is applied, and a lift mechanism for controlling the spacing between the upper and lower electrodes. The first high-frequency power is applied to the upper electrode to cause plasma igniting. The method is adapted to make the spacing between the upper and lower electrodes larger at least at the time of plasma extinction than during plasma processing of a wafer on the lower electrode.
Public/Granted literature
- US20090291564A1 APPARATUS AND METHOD FOR PLASMA PROCESSING Public/Granted day:2009-11-26
Information query
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