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:
May. 11, 2007
Applicant:
Cha Deok Dong, Icheon-si, KR;
Inventor:
Cha Deok Dong, Icheon-si, KR;
Assignee:
Hynix Semiconductor Inc., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 21/336 (2006.01);
U.S. Cl.
CPC ...
Abstract
A flash memory device and a method of manufacturing the same, the flash memory device includes isolation layers formed in an isolation region of a semiconductor substrate, an auxiliary oxide layer formed on edge portions of an active region of the semiconductor substrate and on protruded sidewalls of the isolation layers, a tunnel oxide layer formed on the auxiliary oxide layer of the edge portions of the active region and at a central portion of the active region, and a first polysilicon layer for a floating gate formed on the tunnel oxide layer.