发明名称 |
Plasma processing apparatus including a plurality of plasma processing units having reduced variation |
摘要 |
A plasma processing apparatus comprising a plurality of plasma processing units is provided. Each of the plasma processing units has a matching circuit connected between a radiofrequency generator and a plasma excitation electrode. Among these plasma processing units, a variation <RA> between the maximum and minimum values of input-terminal-side AC resistances RA of the matching circuits defined by <RA>=(RA<SUB>max</SUB>-RA<SUB>min</SUB>)/(RA<SUB>max</SUB>+RA<SUB>min</SUB>) is adjusted to be less than 0.5. A variation between the maximum and minimum values of output-terminal-side AC resistances RB of the matching circuits defined by <RB>=(RB<SUB>max</SUB>-RB<SUB>min</SUB>)/(RB<SUB>max</SUB>+RB<SUB>min</SUB>) is also adjusted to be less than 0.5. The plasma processing units can be adjusted to achieve substantially uniform plasma results in a shorter period of time.
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申请公布号 |
US7225754(B2) |
申请公布日期 |
2007.06.05 |
申请号 |
US20040811034 |
申请日期 |
2004.08.27 |
申请人 |
ALPS ELECTRIC CO., LTD. |
发明人 |
NAKANO AKIRA;OHMI TADAHIRO |
分类号 |
C23C16/00;H05H1/46;B01J19/08;C23C16/509;C23C16/52;C23C16/54;H01J37/32;H01L21/203;H01L21/205;H01L21/302;H01L21/3065;H01L21/66;H05H1/36 |
主分类号 |
C23C16/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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