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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.:

US 9704849 B1

PDFFull Text
Date of Patent:
Jul. 11, 2017

Filed:

Oct. 18, 2013

Electrostatic discharge protection device structures and methods of manufacture

Applicant:

Freescale Semiconductor, Inc., Austin, TX (US);

Inventors:

Jean Philippe Laine, Saint Lys, FR;

Patrice Besse, Tournefeuille, FR;

Assignee:

NXP USA, Inc., Austin, TX (US);

Attorney:
Primary Examiner:

Brook Kebede

Int. Cl.
CPC ...
H01L 29/66 (2006.01); H01L 27/02 (2006.01); H01L 29/06 (2006.01); H01L 21/76 (2006.01); H01L 29/866 (2006.01); H01L 23/29 (2006.01); H01L 27/12 (2006.01);
U.S. Cl.
CPC ...
H01L 27/0262 (2013.01); H01L 21/76 (2013.01); H01L 27/0255 (2013.01); H01L 27/0292 (2013.01); H01L 29/0626 (2013.01); H01L 29/0649 (2013.01); H01L 29/66371 (2013.01); H01L 29/866 (2013.01); H01L 23/291 (2013.01); H01L 27/1203 (2013.01); H01L 2924/0002 (2013.01);
Abstract

An ESD protection device comprising an SCR-type circuit including a PNP transistor and NPN transistor incorporates a Zener diode which permits the circuit to operate at comparatively low trigger voltage thresholds. Zener diode breakdown voltage is controlled by doping levels in a doped area of an N-type well. One or more diodes connected in series between the SCR circuit and the input/output terminal of the device advantageously raises the snapback voltage of the SCR circuit. The use of nitride spacers between doped regions instead of gate oxide technology significantly reduces unwanted leakage currents.

Find Patent Forward Citations

Laine, Jean. (2017). Electrostatic discharge protection device structures and methods of manufacture (U.S. Patent No. 9704849). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9704849

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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