Invention Grant
- Patent Title: Gate contact with vertical isolation from source-drain
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Application No.: US15445481Application Date: 2017-02-28
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Publication No.: US09935168B2Publication Date: 2018-04-03
- Inventor: David V. Horak , Shom S. Ponoth , Balasubramanian Pranatharthiharan , Ruilong Xie
- Applicant: International Business Machines Corporation , GLOBALFOUNDRIES Inc.
- Applicant Address: US NY Armonk KY Grand Cayman
- Assignee: International Business Machines Corporation,GLOBALFOUNDRIES INC.
- Current Assignee: International Business Machines Corporation,GLOBALFOUNDRIES INC.
- Current Assignee Address: US NY Armonk KY Grand Cayman
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Agent Steven J. Meyers
- Main IPC: H01L29/06
- IPC: H01L29/06 ; H01L23/535 ; H01L29/49 ; H01L29/423 ; H01L29/51 ; H01L29/417 ; H01L29/78

Abstract:
A method of forming a semiconductor structure includes forming a gate structure having a first conductive material above a semiconductor substrate, gate spacers on opposing sides of the first conductive material, and a first interlevel dielectric (ILD) layer surrounding the gate spacers and the first conductive material. An upper portion of the first conductive material is recessed. The gate spacers are recessed until a height of the gate spacers is less than a height of the gate structure. An isolation liner is deposited above the gate spacers and the first conductive material. A portion of the isolation liner is removed so that a top surface of the first conductive material is exposed. A second conductive material is deposited in a contact hole created above the first conductive material and the gate spacers to form a gate contact.
Public/Granted literature
- US20170170266A1 GATE CONTACT WITH VERTICAL ISOLATION FROM SOURCE-DRAIN Public/Granted day:2017-06-15
Information query
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