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:
Jan. 18, 2005
Filed:
Feb. 25, 2004
Kenji Toyoda, Osaka, JP;
Takashi Ohtsuka, Toyonaka, JP;
Kiyoshi Morimoto, Hirakata, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
Non-volatile latch circuitof the present invention comprises ferroelectric capacitorprovided with a first electrode, second electrode, and ferroelectric filmthat lies between these electrodes; reset terminal Tre that is connected to first electrodeand a CMOS inverter elementthat is connected to second electrodeof ferroelectric capacitor; voltage switching terminal Tpl that applies a voltage to second electrode; switching elementthat is connected between second electrodeand second input terminal Tpl and switches a voltage applied to second electrode; and set terminal Tse that applies a voltage for switching on or off switching element, wherein the voltage generated in second electrodecaused by polarization retained by ferroelectric filmis higher than the threshold voltage Vtn of NMISFETof CMOS inverter element