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. 28, 2017
Filed:
Jun. 03, 2016
Applicant:
SK Hynix Inc., Gyeonggi-do, KR;
Inventor:
Hyun Duck Lee, Gyeonggi-do, KR;
Assignee:
SK Hynix Inc., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 23/62 (2006.01); H01L 27/02 (2006.01); H01L 29/74 (2006.01);
U.S. Cl.
CPC ...
H01L 27/0262 (2013.01); H01L 29/7408 (2013.01);
Abstract
An electro-static discharge (ESD) protection device includes a first PN diode, a second PN diode and a silicon controlled rectifier (SCR). The first PN diode and the second PN diode are coupled in series between a pad and a ground voltage to provide a first discharge current path. The SCR is coupled between the pad and the ground voltage to provide a second discharge current path. The SCR has a PNPN structure.