发明名称 |
PLASMA PROCESSING APPARATUS AND PLASMA PROCESSING METHOD |
摘要 |
The present invention is intended to improve the uniformity in a distribution function of incident ion energy inside a wafer surface, and realize uniform plasma processing (etching or the like) inside the wafer surface. In a plasma processing apparatus, a bias application portion of a placement electrode on which a wafer is placed is divided into an inner electrode and an outer electrode at positions near the center of the wafer and the edge thereof. Each of a first bias power and a second bias power to be used to accelerate ions incident on the wafer is bifurcated, and the resultant bias powers are fed to the inner electrode and outer electrode using a power distributor by adjusting the power ratio.
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申请公布号 |
US2011253672(A1) |
申请公布日期 |
2011.10.20 |
申请号 |
US20100855206 |
申请日期 |
2010.08.12 |
申请人 |
HITACHI HIGH-TECHNOLOGIES CORPORATION |
发明人 |
KAMIBAYASHI MASAMI;MORI MASAHITO;KOBAYASHI HIROYUKI;SUZUKI KEIZO;KOFUJI NAOYUKI |
分类号 |
C23F1/12;C23F1/08;H01L21/306 |
主分类号 |
C23F1/12 |
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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