Invention Grant
- Patent Title: Method and apparatus for improved plasma processing uniformity
- Patent Title (中): 改善等离子体处理均匀性的方法和装置
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Application No.: US10793253Application Date: 2004-03-05
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Publication No.: US07164236B2Publication Date: 2007-01-16
- Inventor: Andrej S. Mitrovic , Eric J. Strang , Murray D. Sirkis , Bill H. Quon , Richard Parsons , Yuji Tsukamoto
- Applicant: Andrej S. Mitrovic , Eric J. Strang , Murray D. Sirkis , Bill H. Quon , Richard Parsons , Yuji Tsukamoto
- Applicant Address: JP Tokyo
- Assignee: Tokyo Electron Limited
- Current Assignee: Tokyo Electron Limited
- Current Assignee Address: JP Tokyo
- Agency: Pillsbury Winthrop Shaw Pittman LLP
- Main IPC: H05B31/26
- IPC: H05B31/26 ; C23F1/00

Abstract:
A method and apparatus for generating and controlling a plasma (130) formed in a capacitively coupled plasma system (100) having a plasma electrode (140) and a bias electrode in the form of a workpiece support member (170), wherein the plasma electrode is unitary and has multiple regions (Ri) defined by a plurality of RF power feed lines (156) and the RF power delivered thereto. The electrode regions may also be defined as electrode segments (420) separated by insulators (426). A set of process parameters A={n, τi, Φi, Pi, S; Li} is defined; wherein n is the number of RF feed lines connected to the electrode upper surface at locations Li, τi is the on-time of the RF power for the ith RF feed line, Φi is the phase of the ith RF feed line relative to a select one of the other RF feed lines, Pi is the RF power delivered to the electrode through the ith RF feed line at location Li, and S is the sequencing of RF power to the electrode through the RF feed lines. One or more of these parameters are adjusted so that operation of the plasma system results in a workpiece (176) being processed with a desired amount or degree of process uniformity.
Public/Granted literature
- US20040168770A1 Method and apparatus for improved plasma processing uniformity Public/Granted day:2004-09-02
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