Invention Grant
- Patent Title: Test macro for use with a multi-patterning lithography process
- Patent Title (中): 用于多图案化光刻工艺的测试宏
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Application No.: US14607160Application Date: 2015-01-28
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Publication No.: US09355921B2Publication Date: 2016-05-31
- Inventor: Tenko Yamashita , Chun-Chen Yeh , Jin Cho , Hui Zang
- Applicant: GlobalFoundries, Inc.
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES INC.
- Current Assignee: GLOBALFOUNDRIES INC.
- Current Assignee Address: KY Grand Cayman
- Agency: Thompson Hine LLP
- Main IPC: H01L23/58
- IPC: H01L23/58 ; H01L29/10 ; H01L21/66 ; H01L21/8234 ; G03F7/20

Abstract:
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.
Public/Granted literature
- US20150140697A1 TEST MACRO FOR USE WITH A MULTI-PATTERNING LITHOGRAPHY PROCESS Public/Granted day:2015-05-21
Information query
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