发明申请
- 专利标题: Method for forming a dual-damascene structure
- 专利标题(中): 形成双镶嵌结构的方法
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申请号: US10987780申请日: 2004-11-12
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公开(公告)号: US20060105567A1公开(公告)日: 2006-05-18
- 发明人: Vijayakomar Ramachandrarao , Kevin O'Brien
- 申请人: Vijayakomar Ramachandrarao , Kevin O'Brien
- 专利权人: Intel Corporation
- 当前专利权人: Intel Corporation
- 主分类号: H01L21/4763
- IPC分类号: H01L21/4763
摘要:
A dual-damascene structure is formed in a porous dielectric material using an anti-reflective coating. In accordance with one embodiment, during patterning and etching if the trench portions of the dual-damascene structure, the anti-reflective coating has a first density. After patterning and etching, the anti-reflective coating density is reduced. The reduction in the anti-reflective coating's density facilitates selective removal of the anti-reflective coating relative to the porous dielectric material.
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