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. 19, 2006
Filed:
Mar. 24, 2003
Noriyuki Kodama, Kanagawa, JP;
Noriyuki Kodama, Kanagawa, JP;
Nec Electronics Corporation, Kanagawa, JP;
Abstract
There is provided an electrostatic discharge protection device comprising a P conductive type first P well regionformed in a P type epitaxial layerbeing deposited on a surface of a P+ substratehaving a prescribed thickness, an N conductive type first N wella periphery thereof being brought into direct contact with and surrounded by a first P well region, P conductive type first P diffusion regionsand, a P conductive type third P diffusion region, and an N conductive type second N diffusion regionarranged within a first P well region, and a P conductive type second P diffusion regionand an N conductive type first N diffusion regionarranged within a first N well