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:
Oct. 20, 2009
Filed:
Jul. 23, 2007
Masski Seno, Tokyo, JP;
Akihiko Kagami, Tokyo, JP;
Masski Seno, Tokyo, JP;
Akihiko Kagami, Tokyo, JP;
Elpida Memory, Inc., Tokyo, JP;
Abstract
A semiconductor memory device of the invention has memory cells arranged at intersections of bit lines and word lines, and comprises a sense amplifier for amplifying a minute potential difference appearing on a bit line pair; a power supply line pair including first and second power supply lines for supplying first and second potentials to the sense amplifier; a pre-charge power supply line for supplying a predetermined pre-charge potential; a power supply line equalize circuit for setting the first and second potentials at the same potential based on the pre-charge potential; a current limit circuit inserted in series in a predetermined current path from the pre-charge power supply line to the power supply line pair; and switch means capable of switching whether or not current flowing from the pre-charge power supply line to the power supply line pair is limited by the current limit circuit based on a control signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile