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:
Mar. 22, 2016
Filed:
Nov. 20, 2014
Applicant:
Globalfoundries Inc., Grand Cayman, KY;
Inventors:
Ralf van Bentum, Moritzburg, DE;
Torsten Klick, Dresden, DE;
Assignee:
GLOBALFOUNDRIES, INC., Grand Cayman, KY;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/331 (2006.01); G11C 11/4091 (2006.01); G11C 11/412 (2006.01); H01L 27/11 (2006.01); H01L 27/02 (2006.01);
U.S. Cl.
CPC ...
G11C 11/4091 (2013.01); G11C 11/412 (2013.01); H01L 27/1104 (2013.01); H01L 27/0207 (2013.01);
Abstract
Integrated circuits that include SRAM cells having additional read stacks are provided. In accordance with one embodiment an integrated circuit includes a memory storage array of memory cells. The integrated circuit includes a read stack coupled to each memory cell of the memory storage array. Each read stack includes a read pull-down transistor having a first threshold voltage, and a read pass gate transistor coupled in series with the read pull down transistor and having a second threshold voltage greater than the first threshold voltage.