Invention Grant
- Patent Title: Local interconnect structure self-aligned to gate structure
- Patent Title (中): 局部互连结构自对准到门结构
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Application No.: US13102073Application Date: 2011-05-06
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Publication No.: US08455932B2Publication Date: 2013-06-04
- Inventor: Ali Khakifirooz , Kangguo Cheng , Bruce B. Doris , Wilfried E. Haensch , Balasubramanian S. Haran , Pranita Kulkarni
- Applicant: Ali Khakifirooz , Kangguo Cheng , Bruce B. Doris , Wilfried E. Haensch , Balasubramanian S. Haran , Pranita Kulkarni
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Agent H. Daniel Schnurmann
- Main IPC: H01L21/336
- IPC: H01L21/336

Abstract:
A common cut mask is employed to define a gate pattern and a local interconnect pattern so that local interconnect structures and gate structures are formed with zero overlay variation relative to one another. A local interconnect structure may be laterally spaced from a gate structure in a first horizontal direction, and contact another gate structure in a second horizontal direction that is different from the first horizontal direction. Further, a gate structure may be formed to be collinear with a local interconnect structure that adjoins the gate structure. The local interconnect structures and the gate structures are formed by a common damascene processing step so that the top surfaces of the gate structures and the local interconnect structures are coplanar with each other.
Public/Granted literature
- US20120280290A1 LOCAL INTERCONNECT STRUCTURE SELF-ALIGNED TO GATE STRUCTURE Public/Granted day:2012-11-08
Information query
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