- 专利标题: Siloxane and organic-based MOL contact patterning
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申请号: US14993537申请日: 2016-01-12
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公开(公告)号: US10056458B2公开(公告)日: 2018-08-21
- 发明人: 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
- 申请人: GLOBALFOUNDRIES Inc.
- 申请人地址: KY Grand Cayman
- 专利权人: GLOBALFOUNDRIES INC.
- 当前专利权人: GLOBALFOUNDRIES INC.
- 当前专利权人地址: KY Grand Cayman
- 代理机构: Ditthavong & Steiner, P.C.
- 主分类号: H01L21/3205
- IPC分类号: H01L21/3205 ; H01L29/40 ; H01L29/423 ; H01L21/02 ; H01L21/28 ; H01L29/417
摘要:
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.
公开/授权文献
- US20170200792A1 SILOXANE AND ORGANIC-BASED MOL CONTACT PATTERNING 公开/授权日:2017-07-13
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