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.

Date of Patent:
Apr. 13, 2021

Filed:

Jan. 13, 2020
Applicant:

Marvell Asia Pte., Ltd., Singapore, SG;

Inventors:

Hui Wang, Pleasanton, CA (US);

Runzi Chang, San Jose, CA (US);

Assignee:

Marvell Asia Pte., Ltd., Singapore, SG;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/336 (2006.01); H01L 29/78 (2006.01); H01L 21/8234 (2006.01); H01L 27/088 (2006.01); H01L 29/66 (2006.01); H01L 29/10 (2006.01);
U.S. Cl.
CPC ...
H01L 29/7856 (2013.01); H01L 21/823431 (2013.01); H01L 27/0886 (2013.01); H01L 29/1079 (2013.01); H01L 29/66795 (2013.01);
Abstract

A method of forming a finFET includes providing a semiconductor substrate having at least one fin feature extending through a diffusion layer formed on the semiconductor substrate, forming a gate layer on the diffusion layer and the fin feature, splitting the gate layer into a split gate structure including a first gate region, a second gate region, and a gap separating the first gate region and the second gate region, doping the gate layer, doping the diffusion layer to form a plurality of source/drain regions that includes a source/drain region in the gap between the first gate region and the second gate region, and injecting dopants into the diffusion layer to form a diffusion region having a plurality of pocket dopant regions. The plurality of pocket dopant regions includes at least one pocket dopant region in the gap between the first gate region and the second gate region.


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