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:
Nov. 29, 2022
Filed:
Oct. 09, 2020
Applicant:
Allegro Microsystems, Llc, Manchester, NH (US);
Inventors:
Sundar Chetlur, Bedford, NH (US);
Maxim Klebanov, Manchester, NH (US);
Cory Voisine, Manchester, NH (US);
Kenneth Snowdon, Stratham, NH (US);
Hsuan-Jung Wu, Taoyuan, TW;
Assignee:
Allegro MicroSystems, LLC, Manchester, NH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 23/522 (2006.01); H01L 21/8234 (2006.01);
U.S. Cl.
CPC ...
H01L 23/5222 (2013.01); H01L 21/823493 (2013.01);
Abstract
An apparatus, comprising: a substrate; a coupling capacitor that is formed over the substrate; and an isolator that is formed between the substrate and the coupling capacitor, the isolator including: (a) an MP-well layer, (b) a first well layer, (c) an epi tub layer that is nested in the MP-well layer and the first well layer, and (d) a second well layer that is nested in the epi tub layer.