发明申请
- 专利标题: STRIP WITH REDUCED LOW-K DIELECTRIC DAMAGE
- 专利标题(中): 具有降低低K电介质损伤的条带
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申请号: US12463155申请日: 2009-05-08
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公开(公告)号: US20100285671A1公开(公告)日: 2010-11-11
- 发明人: Bing Ji , Andrew D. Bailey, III , Maryam Moravej , Stephen M. Sirard
- 申请人: Bing Ji , Andrew D. Bailey, III , Maryam Moravej , Stephen M. Sirard
- 申请人地址: US CA Fremont
- 专利权人: LAM RESEARCH CORPORATION
- 当前专利权人: LAM RESEARCH CORPORATION
- 当前专利权人地址: US CA Fremont
- 主分类号: H01L21/3065
- IPC分类号: H01L21/3065
摘要:
A method for forming etched features in a low-k dielectric layer disposed below the photoresist mask in a plasma processing chamber is provided. Features are etched into the low-k dielectric layer through the photoresist mask. The photoresist mask is stripped, wherein the stripping comprising at least one cycle, wherein each cycle comprises a fluorocarbon stripping phase, comprising flowing a fluorocarbon stripping gas into the plasma processing chamber, forming a plasma from the fluorocarbon stripping gas, and stopping the flow of the fluorocarbon stripping gas into the plasma processing chamber and a reduced fluorocarbon stripping phase, comprising flowing a reduced fluorocarbon stripping gas that has a lower fluorocarbon flow rate than the fluorocarbon stripping gas into the plasma processing chamber, forming the plasma from the reduced fluorocarbon stripping gas, and stopping the flow of the reduced fluorocarbon stripping gas.
公开/授权文献
- US08691701B2 Strip with reduced low-K dielectric damage 公开/授权日:2014-04-08
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