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:
Sep. 06, 2011
Filed:
May. 28, 2009
Applicant:
Mutsuo Morikado, Kanagawa-ken, JP;
Inventor:
Mutsuo Morikado, Kanagawa-ken, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L 29/788 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor memory in which each memory cell in a NAND flash memory includes a columnar floating gate formed on an element region with a gate insulating film interposed between the floating gate and the element region, diffusion layers formed at portions of the element region located below both sides of the floating gate, and a control gate formed so as to surround the floating gate with an IPD film interposed between the control gate and the floating gate, the IPD film formed on a side surface of the floating gate.