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:
Apr. 21, 2009
Filed:
Apr. 23, 2007
Applicants:
Yu-hwan RO, Seocho-gu, KR;
Kwang-jin Lee, Hwaseong-si, KR;
Sang-beom Kang, Hwaseong-si, KR;
Woo-yeong Cho, Suwon-si, KR;
Inventors:
Yu-Hwan Ro, Seocho-gu, KR;
Kwang-Jin Lee, Hwaseong-si, KR;
Sang-Beom Kang, Hwaseong-si, KR;
Woo-Yeong Cho, Suwon-si, KR;
Assignee:
Samsung Electronics Co., Ltd., Suwon-si, Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In various methods of performing program operations in phase change memory devices, selected memory cells are repeatedly programmed to obtain resistance distributions having desired characteristics such as adequate sensing margins.