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:
Apr. 01, 2025
Filed:
Jan. 10, 2022
Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu, TW;
National Taiwan University, Taipei, TW;
Shih-Yen Lin, New Taipei, TW;
Yu-Wei Zhang, Hualien County, TW;
Kuan-Chao Chen, Tainan, TW;
Si-Chen Lee, Taipei, TW;
Chi Chen, Taipei, TW;
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD., Hsinchu, TW;
NATIONAL TAIWAN UNIVERSITY, Taipei, TW;
Abstract
A method includes forming an interlayer dielectric (ILD) layer over a transistor; forming a first inter-metal dielectric (IMD) layer over the ILD layer; etching a via opening extending through the first IMD layer; forming a first 2-D material layer lining along sides and a bottom of the via opening; depositing a first metal in the via opening and over the first 2-D material layer; performing a chemical mechanism polishing (CMP) process to the first metal until the first IMD layer is exposed; forming a second IMD layer over the first IMD layer; etching a trench in the second IMD layer; forming a second 2-D material layer lining along sides and a bottom of the trench; and depositing a second metal over the second 2-D material layer at a temperature lower than a temperature of depositing the first metal over the first 2-D material layer.