Invention Grant
- Patent Title: Aqueous and semi-aqueous cleaners for the removal of post-etch residues with tungsten and cobalt compatibility
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Application No.: US15324588Application Date: 2015-06-24
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Publication No.: US11978622B2Publication Date: 2024-05-07
- Inventor: Lingyan Song , Steven Lippy , Emanuel I. Cooper
- Applicant: Entegris, Inc.
- Applicant Address: US MA Billerica
- Assignee: ENTEGRIS, INC.
- Current Assignee: ENTEGRIS, INC.
- Current Assignee Address: US MA Billerica
- International Application: PCT/US2015/037457 2015.06.24
- International Announcement: WO2016/003729A 2016.01.07
- Date entered country: 2017-01-06
- Main IPC: H01L21/02
- IPC: H01L21/02 ; B08B3/08 ; C11D1/00 ; C11D1/66 ; C11D3/04 ; C11D3/24 ; C11D3/30 ; C11D3/36 ; C11D3/37 ; C11D3/43 ; C11D7/08 ; C11D7/10 ; C11D7/28 ; C11D11/00

Abstract:
Cleaning compositions and processes for cleaning post-plasma etch residue from a microelectronic device having said residue thereon. The composition achieves highly efficacious cleaning of the residue material, including titanium-containing, copper-containing, tungsten-containing, and/or cobalt-containing post-etch residue from the microelectronic device while simultaneously not damaging the interlevel dielectric, metal interconnect material, and/or capping layers also present thereon.
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