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:
May. 05, 2009
Filed:
Dec. 20, 2006
Mitsuhiro Yamamura, Suwa, JP;
Mitsuhiro Yamamura, Suwa, JP;
Seiko Epson Corporation, , JP;
Abstract
A ferroelectric memory device including: a plurality of bit lines; a plurality of memory cells, which are connected to the bit lines, and which store prescribed data; and a sense amplifier, which is connected to a bit line, wherein the sense amplifier includes an op amp, a MOS transistor, and a capacitor, and a first input unit of the op amp is connected to a bit line, a second input unit is connected to a first voltage, an output unit is connected to a gate electrode of the MOS transistor, the MOS transistor is connected between a first node and a second voltage that is lower than the voltage of the first node, and the capacitor is connected between the first node and the bit line.