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:
Dec. 28, 2021
Filed:
Feb. 06, 2020
Semiconductor Manufacturing International (Shanghai) Corporation, Shanghai, CN;
Semiconductor Manufacturing International (Beijing) Corporation, Beijing, CN;
Duohui Bei, Shanghai, CN;
Abstract
A semiconductor structure is provided. The semiconductor structure includes: a substrate; and a functional layer, on the substrate. The substrate includes a device region. The semiconductor structure further includes a plurality of discrete sidewall spacers, on the functional layer in the device region. Adjacent sidewall spacers are spaced apart by a first gap and a second gap, and the first gap and the second gap are alternately arranged. The semiconductor structure further includes: a core layer on a sidewall surface of one side of the sidewall spacer; a second opening in the functional layer at a bottom of the second gap exposed by the sidewall spacer and the core layer; and a first opening in the functional layer at a bottom of the first gap. The core layer is disposed in the second gap.