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:
Feb. 11, 2014
Filed:
Jan. 20, 2010
Amaury Gendron, Scottsdale, AZ (US);
Chai Ean Gill, Chandler, AZ (US);
Changsoo Hong, Phoenix, AZ (US);
Amaury Gendron, Scottsdale, AZ (US);
Chai Ean Gill, Chandler, AZ (US);
Changsoo Hong, Phoenix, AZ (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
An electrostatic discharge (ESD) protection clamp () for protecting associated devices or circuits (), comprises a bipolar transistors () in which doping of facing base () and collector () regions is arranged so that avalanche breakdown occurs preferentially within a portion () of the base region () of the device () away from the overlying dielectric-semiconductor interface (). Maximum variations (ΔVt)of ESD triggering voltage Vtas a function of base-collector spacing dimensions D due, for example, to different azimuthal orientations of transistors () on a semiconductor die or wafer is much reduced. Triggering voltage consistency and manufacturing yield are improved.