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:
Jul. 24, 2018
Filed:
Aug. 02, 2017
Applicant:
United Microelectronics Corp., Hsin-Chu, TW;
Inventors:
Assignee:
UNITED MICROELECTRONICS CORP., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 21/82 (2006.01); H01L 21/8234 (2006.01);
U.S. Cl.
CPC ...
H01L 21/823431 (2013.01); H01L 21/823468 (2013.01); H01L 21/823475 (2013.01); H01L 21/823481 (2013.01);
Abstract
A method for fabricating a semiconductor device includes the following steps: providing a semiconductor substrate having a first fin; forming a first set of gate structures on the first fin, where the gate structures are surrounded by an interlayer dielectric; forming a first contact hole in the interlayer dielectric between two adjacent gate structures; forming a first dopant source layer on the bottom of the first contact hole, where the dopant source layer comprise dopants with a first conductivity type; and annealing the first dopant source layer to diffuse the dopants out of the first dopant source layer.