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. 08, 2005
Filed:
Feb. 06, 2003
Applicant:
Sukyoon Yoon, Saratoga, CA (US);
Inventor:
Sukyoon Yoon, Saratoga, CA (US);
Assignee:
Hynix Semiconductor America, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L029/788 ; G11C010/04 ;
U.S. Cl.
CPC ...
Abstract
A flash memory device includes a substrate having first and second wells. The first well is defined within the second well. A plurality of trenches defines the substrate into a plurality of sub-columnar active regions. The trenches is formed within the first well and extends into the second well. A plurality of flash memory cells are formed on each of the sub-columnar active regions.