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. 17, 2012
Filed:
Oct. 31, 2007
Sergey A. Kostylev, Bloomfield Hills, MI (US);
Sergey A. Kostylev, Bloomfield Hills, MI (US);
Ovonyx, Inc., Troy, MI (US);
Abstract
Methods of programming a phase-change memory device that remedy device failure. The methods includes applying a sequence of two or more electrical energy pulses to the device, where the sequence of pulses includes positive polarity pulses and negative polarity pulses. In one method, two or more pulses of an initial polarity are applied and are followed by one or more pulses having opposite polarity. In another method, pulses of an initial polarity are repeatedly applied until the device fails and one or more pulses of opposite polarity are subsequently applied to restore the device to its initial performance. The pulses may be set pulses, reset pulses, or pulses that produce programmed states having a resistance intermediate between the set resistance and reset resistance of the device.