- 专利标题: TEST MACRO FOR USE WITH A MULTI-PATTERNING LITHOGRAPHY PROCESS
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申请号: US14607161申请日: 2015-01-28
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公开(公告)号: US20150140698A1公开(公告)日: 2015-05-21
- 发明人: Tenko Yamashita , Chun-Chen Yeh , Jin Cho , Hui Zang
- 申请人: International Business Machines Corporation , GlobalFoundries, Inc.
- 主分类号: H01L21/66
- IPC分类号: H01L21/66 ; H01L21/8234
摘要:
A method for forming an integrated circuit having a test macro using a multiple patterning lithography process (MPLP) is provided. The method includes forming an active area of the test macro having a first and second gate region during a first step of MPLP, and forming a first and second source/drain regions in the active area during a second step of the MPLP. The method also includes forming a first contact connected to the first gate region, a second contact connected to the second gate region, a third contact connected to the first source/drain region, and a forth contact connected to the source/drain region and determining if an overlay shift occurred between the first step and the second step of the step of the MPLP by testing for a short between one or more of the first contact, the second contact, the third contact, or the fourth contact.
公开/授权文献
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