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:
Feb. 07, 2006
Filed:
Apr. 27, 2004
Ryota Yamamoto, Kanagawa, JP;
Ryota Yamamoto, Kanagawa, JP;
NEC Electronics Corporation, Kanagawa, JP;
Abstract
A ring-shaped Ptype diffusion region is formed on the top surface of a P type substrate in such a way as to surround a single internal circuit region. A shunt wiring is formed in an area including directly above the Ptype diffusion region on the P type substrate. The shunt wiring is connected to the Ptype diffusion region by a plurality of contacts. The shunt wiring is provided with an annular ring portion surrounding the internal circuit region. A meander inductor led out from the ring portion and the one end of the meander inductor is connected to a ground potential wiring. A resonance circuit is formed by a parasitic capacitor and the inductance of the shunt wiring. The parasitic capacitor is formed between the shunt wiring and the Ptype diffusion region on the P type substrate.