发明名称 |
Low volume gas distribution assembly and method for a chemical downstream etch tool |
摘要 |
An improved low-volume gas distribution assembly for a chemical downstream etch tool includes a focusing collar positioned within a process chamber and having a depending shroud in close proximity to a wafer chuck. An apertured gas delivery conduit rests on channels formed in slanted sides of a central tube of the focusing collar. The apertures in the gas delivery conduit are patterned and dimensioned to provide substantially uniform distribution of a process gas over the upper surface of the workpiece. The central tube is sealed with a cover plate and the process chamber is covered with a chamber lid.
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申请公布号 |
US5728260(A) |
申请公布日期 |
1998.03.17 |
申请号 |
US19960654958 |
申请日期 |
1996.05.29 |
申请人 |
APPLIED MATERIALS, INC. |
发明人 |
BROWN, WILLIAM;HERCHEN, HARALD;NZEADIBE, IHI;MERRY, WALTER |
分类号 |
H01L21/302;H01J37/32;H01L21/3065;(IPC1-7):H01L21/00;C23F1/00 |
主分类号 |
H01L21/302 |
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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