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:
Mar. 19, 2013
Filed:
Jul. 28, 2011
Applicant:
Heon Yong Chang, Gyeonggi-do, KR;
Inventor:
Heon Yong Chang, Gyeonggi-do, KR;
Assignee:
Hynix Semiconductor Inc., Kyoungki-do, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 31/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A phase change memory device includes heaters which are formed in their respective memory cells and vertically positioned stack patterns having phase change layers and top electrodes which are formed to come into contact with the heaters. The heaters have horizontal cross-sectional bent shapes which can have any number of shapes such as a shape similar to that of a boomerang. The horizontal cross-sectional bent shapes of the to heaters are for minimizing the contact area between the heaters and the phase change layer so that programming currents can be reduced or minimized.