Invention Grant
- Patent Title: Siloxane and organic-based MOL contact patterning
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Application No.: US14993537Application Date: 2016-01-12
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Publication No.: US10056458B2Publication Date: 2018-08-21
- Inventor: Chang Ho Maeng , Andy Wei , Anthony Ozzello , Bharat Krishnan , Guillaume Bouche , Haifeng Sheng , Haigou Huang , Huang Liu , Huy M. Cao , Ja-Hyung Han , SangWoo Lim , Kenneth A. Bates , Shyam Pal , Xintuo Dai , Jinping Liu
- Applicant: GLOBALFOUNDRIES Inc.
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES INC.
- Current Assignee: GLOBALFOUNDRIES INC.
- Current Assignee Address: KY Grand Cayman
- Agency: Ditthavong & Steiner, P.C.
- Main IPC: H01L21/3205
- IPC: H01L21/3205 ; H01L29/40 ; H01L29/423 ; H01L21/02 ; H01L21/28 ; H01L29/417

Abstract:
Methods of MOL S/D contact patterning of RMG devices without gouging of the Rx area or replacement of the dielectric are provided. Embodiments include forming a SOG layer around a RMG structure, the RMG structure having a contact etch stop layer and a gate cap layer; forming a lithography stack over the SOG and gate cap layers; patterning first and second TS openings through the lithography stack down to the SOG layer; removing a portion of the SOG layer through the first and second TS openings, the removing selective to the contact etch stop layer; converting the SOG layer to a SiO2 layer; forming a metal layer over the SiO2 layer; and planarizing the metal and SiO2 layers down to the gate cap layer.
Public/Granted literature
- US20170200792A1 SILOXANE AND ORGANIC-BASED MOL CONTACT PATTERNING Public/Granted day:2017-07-13
Information query
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