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:
May. 19, 2026
Filed:
Sep. 07, 2023
Taiwan Semiconductor Manufacturing Company, Ltd., Hsin-Chu, TW;
Che Chi Shih, Taoyuan, TW;
Chia-Hao Yu, New Taipei, TW;
Wei-Yen Woon, Taoyuan, TW;
Szuya Liao, Hsinchu, TW;
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD., Hsinchu, TW;
Abstract
Semiconductor structures and methods of forming the same are provided. An exemplary method includes forming a stack over a substrate and patterning the stack and a portion of the substrate to form a fin-shaped structure comprising a base portion formed from the substrate and a top portion formed from the stack. The stack includes channel layers interleaved by sacrificial layers and two-dimensional (2D) material layers disposed between adjacent ones of the channel layers and the sacrificial layers. The method also includes selectively removing the sacrificial layers of the top portion to form a plurality of channel members disposed over the base portion, forming a first gate structure and a second gate structure above the first gate structure. The first gate structure wraps around a bottom portion of the channel members. The second gate structure wraps around a top portion of the channel members.