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. 23, 2016
Filed:
Sep. 15, 2011
Takashi Shibasaki, Gunma, JP;
Hidefumi Saito, Isesaki, JP;
Takahisa Makino, Kiryu, JP;
Masanori Shimizu, Ashikaga, JP;
Daisuke Sasaki, Ota, JP;
Takashi Shibasaki, Gunma, JP;
Hidefumi Saito, Isesaki, JP;
Takahisa Makino, Kiryu, JP;
Masanori Shimizu, Ashikaga, JP;
Daisuke Sasaki, Ota, JP;
Semiconductor Components Industries, LLC, Phoenix, AZ (US);
Abstract
A circuit device having superior voltage resistance is provided. A structure is achieved that omits the resin layer that is normally provided to the top surface of a circuit board. Specifically, a ceramic substrate () is disposed on the top surface of a circuit board () comprising a metal, and a transistor () such as an IGBT is mounted to the top surface of the ceramic substrate (). As a result, the transistor () and the circuit board () are insulated from each other by the ceramic substrate (). The ceramic substrate (), which comprises an inorganic material, has an extremely high voltage resistance compared to the conventionally used insulating layer comprising resin, and so even if a high voltage on the order of 1000V is applied to the transistor (), short circuiting between the transistor () and the circuit board () is prevented.