The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 14, 2022
Filed:
Sep. 30, 2020
International Business Machines Corporation, Armonk, NY (US);
Zhenxing Bi, Dunn Loring, VA (US);
Zheng Xu, Wappingers Falls, NY (US);
Dexin Kong, Slingerlands, NY (US);
Kangguo Cheng, Schenectady, NY (US);
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Abstract
A method of performing co-integrated fabrication of a non-volatile memory (NVM) and a gate-all-around (GAA) nanosheet field effect transistor (FET) includes recessing fins in a channel region of the NVM and the FET to form source and drain regions adjacent to recessed fins, and removing alternating portions of the recessed fins of the NVM and the FET to form gaps in the recessed fins. A stack of layers that make up an NVM structure are conformally deposited within the gaps of the recessed fins leaving second gaps, smaller than the gaps, and above the recessed fins of the NVM while protecting the FET with the organic planarization layer (OPL) and a block mask. The OPL and block mask are removed from the FET, and another OPL and another block mask protect the NVM while a gate of the FET is formed above the recessed fins and within the gaps.