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:
Aug. 24, 2004
Filed:
Jul. 24, 2002
Applicant:
Inventors:
Assignee:
Samsung Electronics, Co., LTD, Kyungki-do, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 2/900 ; G11C 7/00 ;
U.S. Cl.
CPC ...
G11C 2/900 ; G11C 7/00 ;
Abstract
A semiconductor memory device employs a power supply system in which a first power supply voltage supplied to a cell area is separated from a second power supply voltage supplied to a peripheral circuit area. Particularly, during a wafer burn-in test operation mode, the first power supply voltage supplied to the cell area is higher than the second power supply voltage supplied to the peripheral circuit area. If a wafer burn-in test operation is performed under the second power supply system, a DC current path formed by a latch-up phenomenon of a memory cell can be shut off.