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:
Aug. 15, 2006
Filed:
Apr. 09, 2004
Yusuke Sato, Komoro, JP;
Kenji Koyama, Komoro, JP;
Toshihiro Miura, Saku, JP;
Toshihiko Kyogoku, Komoro, JP;
Yusuke Sato, Komoro, JP;
Kenji Koyama, Komoro, JP;
Toshihiro Miura, Saku, JP;
Toshihiko Kyogoku, Komoro, JP;
Renesas Technology Corp., Tokyo, JP;
Akita Electronics Systems Co., Ltd., Akita, JP;
Abstract
An electrode on a main surface of a module board, to which an emitter electrode of a semiconductor chip which includes a switching element of a power supply control circuit that supplies a power supply voltage to amplifier circuit parts of a power module of a digital cellular phone, is electrically connected to a wiring in an internal layer of the module board through a plurality of via holes. Further, the wiring is electrically connected to an electrode for the supply of the power supply voltage, which is provided on a back surface of the module board. Accordingly, an output characteristic of the semiconductor device is improved.