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. 01, 2009
Filed:
Jan. 10, 2008
Takeshi Ohgami, Tokyo, JP;
Takeshi Ohgami, Tokyo, JP;
Elpida Memory, Inc., Tokyo, JP;
Abstract
In a sense amplifier circuit having a plurality of sense amplifier portions arranged in order, each of the sense amplifier portions includes a transistor that supplies a bit line potential to a bit line pair in a corresponding column of a memory cell array and a gate electrode for supplying a precharge signal to a gate of the transistor. The gate electrode of the plurality of sense amplifier portions is provided as one piece as a whole and extends in a direction parallel to a row direction in the memory cell array. A gate electrode portion which is a connected portion between the gate electrode in a k-th sense amplifier portion and the gate electrode in a (k+1)-th sense amplifier portion is ring-shaped, where k is an odd number.