Invention Grant
- Patent Title: Self-aligned gate contact formation
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Application No.: US14261823Application Date: 2014-04-25
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Publication No.: US09640625B2Publication Date: 2017-05-02
- Inventor: Guillaume Bouche , Andy Chih-Hung Wei , Gabriel Padron Wells , Andre P. Labonte , Jing Wan
- Applicant: GLOBALFOUNDRIES Inc.
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES INC.
- Current Assignee: GLOBALFOUNDRIES INC.
- Current Assignee Address: KY Grand Cayman
- Agency: Williams Morgan, P.C.
- Main IPC: H01L29/76
- IPC: H01L29/76 ; H01L29/417 ; H01L21/768

Abstract:
Provided are approaches for forming gate and source/drain (S/D) contacts. Specifically, a gate contact opening is formed over at least one of a set of gate structures, a set of S/D contact openings is formed over fins of the semiconductor device, and a metal material is deposited over the semiconductor device to form a gate contact within the gate contact opening and a set of S/D contacts within the set of S/D contact openings. In one approach, nitride remains between the gate contact and at least one of the S/D contacts. In another approach, the device includes merged gate and S/D contacts. This approach provides selective etching to partition areas where oxide will be further removed selectively to nitride to create cavities to metallize and create contact to the S/D, while isolation areas between contact areas are enclosed in nitride and do not get removed during the oxide etch.
Public/Granted literature
- US20150311082A1 SELF-ALIGNED GATE CONTACT FORMATION Public/Granted day:2015-10-29
Information query
IPC分类: