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:
Oct. 18, 2011
Filed:
Nov. 26, 2007
Weon-ho Park, Gyeonggi-do, KR;
Weon-Ho Park, Gyeonggi-do, KR;
Abstract
A non-volatile memory device includes a semiconductor substrate having a first section including a substantially planar first top surface, a second section including a substantially planar second top surface, and a sidewall extending between the first and second top surfaces. The second top surface of the substrate is closer to a bottom surface of the substrate than is the first top surface. A charge storage pattern extends on the first and second top surfaces of the substrate and along the sidewall therebetween. A source region in the first section of the substrate extends from the first top surface into the second section of the substrate and has a stepped portion defined by the sidewall and the second top surface. Related fabrication methods and methods of operation are also discussed.