Invention Grant
- Patent Title: Strip with reduced low-K dielectric damage
- Patent Title (中): 具有降低的低K电介质损伤的带
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Application No.: US12463155Application Date: 2009-05-08
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Publication No.: US08691701B2Publication Date: 2014-04-08
- Inventor: Bing Ji , Andrew D. Bailey, III , Maryam Moravej , Stephen M. Sirard
- Applicant: Bing Ji , Andrew D. Bailey, III , Maryam Moravej , Stephen M. Sirard
- Applicant Address: US CA Fremont
- Assignee: Lam Research Corporation
- Current Assignee: Lam Research Corporation
- Current Assignee Address: US CA Fremont
- Agency: Beyer Law Group LLP
- Main IPC: H01L21/302
- IPC: H01L21/302

Abstract:
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.
Public/Granted literature
- US20100285671A1 STRIP WITH REDUCED LOW-K DIELECTRIC DAMAGE Public/Granted day:2010-11-11
Information query
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