Invention Grant
- Patent Title: Integration of super via structure in BEOL
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Application No.: US15798794Application Date: 2017-10-31
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Publication No.: US10020255B1Publication Date: 2018-07-10
- Inventor: Ruqiang Bao , Joe Lee , Yann Mignot , Hosadurga Shobha , Junli Wang , Yongan Xu
- 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
- Agency: Cantor Colburn LLP
- Agent Vazken Alexanian
- Main IPC: H01L23/522
- IPC: H01L23/522 ; H01L21/768 ; H01L23/532

Abstract:
Semiconductor devices including super via structures and BEOL processes for forming the same, according to embodiments of the invention, generally include removing selected portions of a nitride cap layer intermediate interconnect levels, wherein the selected portions correspond to the regions where the super via structure is to be formed and where underlying overlay alignment markers are located.
Information query
IPC分类: