Invention Application
US20150372225A1 METHOD OF FORMING AN ON-PITCH SELF-ALIGNED HARD MASK FOR CONTACT TO A TUNNEL JUNCTION USING ION BEAM ETCHING
有权
使用离子束蚀刻形成用于接触隧道连接的点对准自对准硬掩模的方法
- Patent Title: METHOD OF FORMING AN ON-PITCH SELF-ALIGNED HARD MASK FOR CONTACT TO A TUNNEL JUNCTION USING ION BEAM ETCHING
- Patent Title (中): 使用离子束蚀刻形成用于接触隧道连接的点对准自对准硬掩模的方法
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Application No.: US14310844Application Date: 2014-06-20
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Publication No.: US20150372225A1Publication Date: 2015-12-24
- Inventor: Michael C. Gaidis , Erwan Gapihan , Rohit Kilaru , Eugene J. O'Sullivan
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION , CROCUS TECHNOLOGY
- Main IPC: H01L43/08
- IPC: H01L43/08 ; H01L43/12 ; H01L43/10

Abstract:
A method of forming a memory device that in one embodiment may include forming a magnetic tunnel junction on a first electrode using an electrically conductive mask and subtractive etch method. Following formation of the magnetic tunnel junction, at least one dielectric layer is deposited to encapsulate the magnetic tunnel junction. Ion beam etching/Ion beam milling may then remove the portion of the at least one dielectric layer that is present on the electrically conductive mask, wherein a remaining portion of the at least one dielectric layer is present over the first electrode. A second electrode may then be formed in contact with the electrically conductive mask.
Public/Granted literature
Information query
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