发明申请
US20070295455A1 METHOD AND APPARATUS FOR ETCHING MATERIAL LAYERS WITH HIGH UNIFORMITY OF A LATERAL ETCH RATE ACROSS A SUBSTRATE
审中-公开
用于蚀刻材料层的方法和装置,其具有基于基板的侧向蚀刻速率的高均匀性
- 专利标题: METHOD AND APPARATUS FOR ETCHING MATERIAL LAYERS WITH HIGH UNIFORMITY OF A LATERAL ETCH RATE ACROSS A SUBSTRATE
- 专利标题(中): 用于蚀刻材料层的方法和装置,其具有基于基板的侧向蚀刻速率的高均匀性
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申请号: US11831357申请日: 2007-07-31
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公开(公告)号: US20070295455A1公开(公告)日: 2007-12-27
- 发明人: David Mui , Wei Liu
- 申请人: David Mui , Wei Liu
- 主分类号: H01L21/3065
- IPC分类号: H01L21/3065
摘要:
A method and apparatus for etching material layers with high uniformity of a lateral etch rate across a substrate using a gas mixture that includes a passivation gas. The passivation gas is provided to a peripheral region of the substrate to passivate sidewalls of the structures being etched.
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