Invention Grant
- Patent Title: Lithographic alignment of a conductive line to a via
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Application No.: US16541873Application Date: 2019-08-15
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Publication No.: US10685879B1Publication Date: 2020-06-16
- Inventor: John C. Arnold , Ashim Dutta , Dominik Metzler , Takeshi Nogami
- 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: Tutunjian & Bitetto, P.C.
- Agent Vazken Alexanian
- Main IPC: H01L21/768
- IPC: H01L21/768 ; H01L23/522 ; H01L23/528

Abstract:
A method for fabricating a semiconductor device includes forming misalignment tolerant vias each having a landing area configured to account for alignment mismatch resulting from subsequent formation of conductive structures, depositing a conductive layer over the misalignment tolerant vias, and obtaining conductive layer patterning including each of the conductive structures formed on at least a portion of a respective one of the landing areas, including subtractively patterning the conductive layer. The misalignment tolerant vias and the conductive structures imparting a semiconductor device geometry accounting for the alignment mismatch.
Information query
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