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:
Jul. 20, 2010
Filed:
Aug. 24, 2007
Dong-ho Ahn, Gyeonggi-do, KR;
Dong-Ho Ahn, Gyeonggi-do, KR;
Abstract
A memory device includes first and second electrodes and a phase-changeable material region disposed between the first and second electrodes and including first and second portions contacting respective ones of the first and second electrodes and a third portion interconnecting the first and second portions and configured to preferentially heat with respect to the first and second portions responsive to a current passing between the first and second electrodes. The first and second portions of the phase-changeable material region may contact respective ones of the first and second electrodes at respective first and second electrode contact surfaces and the third portion may have a cross-sectional area that is less than areas of each of the first and second contact surfaces. For example, the third portion may include a filament portion extending between the first and second portions.