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:
Oct. 29, 2019
Filed:
Nov. 15, 2017
Semiconductor Manufacturing International (Beijing) Corporation, Beijing, CN;
Semiconductor Manufacturing International (Shanghai) Corporation, Shanghai, CN;
Fei Zhou, Shanghai, CN;
Semiconductor Manufacturing Int. (Beijing) Corp., Beijing, CN;
Semiconductor Manufacturing Int. (Shanghai) Corp., Shanghai, CN;
Abstract
The present disclosure relates to the technical field of semiconductors, and discloses a semiconductor device and a manufacturing method therefor. The method includes: providing a substrate structure, where the substrate structure includes: a substrate having a first device region and a second device region, a first dummy gate structure at the first device region, a second dummy gate structure at the second device region, and an LDD region below the first dummy gate structure. The first dummy gate structure includes a first dummy gate dielectric layer at the first device region, a first dummy gate on the first dummy gate dielectric layer, and a first spacer layer at a side wall of the first dummy gate. The second dummy gate structure includes a second dummy gate dielectric layer at the second device region, a second dummy gate on the second dummy gate dielectric layer, and a second spacer layer at a side wall of the second dummy gate. The method further includes removing the first dummy gate; etching back the first spacer layer to reduce a thickness of the first spacer layer; removing an exposed portion of the first dummy gate dielectric layer to form a first trench; and removing the second dummy gate and exposed second dummy gate dielectric layer to form a second trench.