Invention Grant
- Patent Title: Interconnects based on subtractive etching of silver
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Application No.: US15347969Application Date: 2016-11-10
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Publication No.: US09911648B2Publication Date: 2018-03-06
- Inventor: Brett C. Baker-O'Neal , Eric A. Joseph , Hiroyuki Miyazoe
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Nicholas L. Cadmus
- Main IPC: H01L21/311
- IPC: H01L21/311 ; H01L21/768 ; H01L21/3213 ; H01L23/532 ; H01L21/027 ; H01L21/033 ; H01L23/528

Abstract:
A method for forming at least one Ag or Ag based alloy feature in an integrated circuit, including providing a blanket layer of Ag or Ag based alloy in a multi-layer structure on a substrate. The method further includes providing a hard mask layer over the blanket layer of Ag or Ag based alloy. The method further includes performing an etch of the blanket layer of Ag or Ag based alloy, wherein a portion of the blanket layer of Ag or Ag based alloy that remains after the etch forms one or more conductive lines. The method further includes forming a liner that surrounds the one or more conductive lines. The method further includes depositing a dielectric layer on the multi-layer structure.
Public/Granted literature
- US20170062274A1 INTERCONNECTS BASED ON SUBTRACTIVE ETCHING OF SILVER Public/Granted day:2017-03-02
Information query
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