Invention Grant
US08192806B1 Plasma particle extraction process for PECVD 有权
PECVD等离子体粒子提取过程

Plasma particle extraction process for PECVD
Abstract:
A plasma-enhanced chemical vapor deposition (PECVD) process including plasma particle extraction is described. Charged particles suspended in discharge volume are moved together with a plasma and can then be flushed away. The particle extraction process reduces unwanted particles on the wafer after deposition and reduces total process time. In some embodiments, the process can involve powering an electrode in the process chamber located away from the wafer. This electrode can be powered up as the main deposition electrode is powered down.
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