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:
Dec. 06, 2005
Filed:
Mar. 21, 2002
Applicants:
Thomas Roehr, Yokohama, JP;
Hans-oliver Joachim, Kanagawa-ken, JP;
Inventors:
Thomas Roehr, Yokohama, JP;
Hans-Oliver Joachim, Kanagawa-ken, JP;
Assignee:
Infineon Technologies Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C011/22 ; G11C011/24 ;
U.S. Cl.
CPC ...
Abstract
Improved sensing of ferroelectric memory cells is disclosed. When a memory access is initiated, the bitlines are precharged to a negative voltage, for example, −0.5 to −1.0V. This increases the effective plateline pulse (V) to V+the magnitude of the negative voltage. This results in an increase in the difference between Vand Vread signals, thereby increasing the sensing window.