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:
Feb. 22, 2022
Filed:
Apr. 09, 2020
Taiwan Semiconductor Manufacturing Co., Ltd., Hsinchu, TW;
TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD., Hsinchu, TW;
Abstract
A semiconductor device includes first and second nanowire structures, first and second annular hafnium oxide layers, first and second annular cap layers, and first and second metal gate electrodes. The first and second nanowire structures are suspended over a substrate and respectively have an n-channel region and a p-channel region. The first and second annular hafnium oxide layers encircle the n-channel region and the p-channel region, respectively. The first and second annular cap layers encircle the first and second annular hafnium oxide layers, respectively. The first and second annular cap layers are made of a same material that is lanthanum oxide, yttrium oxide, or strontium oxide. The first and second metal gate electrodes encircle the first and second annular cap layers, respectively. The first and second metal gate electrodes have a same metal composition.