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. 07, 2008
Filed:
Apr. 11, 2007
Applicant:
Eiji Kamiya, Yokkaichi, JP;
Inventor:
Eiji Kamiya, Yokkaichi, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/336 (2006.01);
U.S. Cl.
CPC ...
Abstract
A non-volatile semiconductor memory device includes a semiconductor substrate, a memory cell array formed on the semiconductor substrate, and including a first gate insulator having a first thickness. The device further includes a high-voltage transistor circuit formed on the semiconductor substrate, and including a second gate insulator having a second thickness greater than the first thickness, and a peripheral circuit formed on the semiconductor substrate, and including the second gate insulator.