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:
Sep. 17, 2019
Filed:
Dec. 13, 2018
Semiconductor Manufacturing International (Shanghai) Corporation, Shanghai, CN;
Semiconductor Manufacturing International (Beijing) Corporation, Beijing, CN;
Meng Zhao, Shanghai, CN;
Abstract
Semiconductor structures and fabrication methods thereof are provided. An exemplary fabrication method includes providing a base substrate; forming a dummy gate structure over the base substrate; forming source/drain regions having source/drain doping ions in the base substrate at both sides of the dummy gate structure; forming a dielectric layer on the source/drain regions and covering the side surfaces of the dummy gate structure; removing the dummy gate structure to form an opening in the dielectric layer; performing one or more of a first ion implantation process, for implanting first barrier ions in the base substrate toward the source region to form a first barrier layer under the opening, and a second ion implantation process, for implanting second barrier ions in the base substrate toward the source region to form a second barrier layer under the opening; and forming a gate structure in the opening.