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. 01, 2002
Filed:
Mar. 28, 2001
Tetsuro Tamura, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
Data stored in a ferroelectric capacitor having its one electrode connected to a plate line and its other electrode connected to a bit line is read out by inputting a pulse to the plate line and then performing a sense operation to amplify the data. The sense operation is performed after a signal from the non-switching ferroelectric capacitor is decreased from its peak value right after pulsing the plate line. A predetermined time is ensured from input of the pulse to the sense operation. With this arrangement, the signal output can be decreased. The signal output margin can be ensured, and the service life of a device can be increased by decreasing the output from the bit line due to the imprint effect on the capacitor.