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:
Sep. 08, 2015
Filed:
May. 30, 2012
Applicant:
Da-wei Lai, Singapore, SG;
Inventor:
Da-Wei Lai, Singapore, SG;
Assignee:
GLOBALFOUNDRIES Singapore Pte. Ltd., Singapore, SG;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 29/66 (2006.01); H01L 29/74 (2006.01); H01L 27/02 (2006.01); H02H 9/00 (2006.01);
U.S. Cl.
CPC ...
H01L 29/7436 (2013.01); H01L 27/0262 (2013.01);
Abstract
An approach for providing a latch-up robust silicon control rectifier (SCR) is disclosed. Embodiments include providing a first N+ region and a first P+ region in a substrate for a SCR; providing first and second n-well regions in the substrate proximate the first N+ and P+ regions; providing a second N+ region in the first n-well region, and a second P+ region in the second n-well region; and coupling the first N+ and P+ regions to a ground rail, the second N+ region to a power rail, and the second P+ region to an I/O pad.