发明申请
US20100196626A1 GROUND RETURN FOR PLASMA PROCESSES 有权
等离子体工艺的接地返回

GROUND RETURN FOR PLASMA PROCESSES
摘要:
A method and apparatus for providing an electrically symmetrical ground or return path for electrical current between two electrodes is described. The apparatus includes at least on radio frequency (RF) device coupled to one of the electrodes and between a sidewall and/or a bottom of a processing chamber. The method includes moving one electrode relative to another and realizing a ground return path based on the position of the displaced electrode using one or both of a RF device coupled to a sidewall and the electrode, a RF device coupled to a bottom of the chamber and the electrode, or a combination thereof.
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