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:
Apr. 16, 2013
Filed:
Feb. 29, 2012
Kumiko Hiehata, Nagaokakyo, JP;
Takahiro Sumi, Nagaokakyo, JP;
Jun Adachi, Nagaokakyo, JP;
Jun Urakawa, Nagaokakyo, JP;
Takayuki Tsukizawa, Nagaokakyo, JP;
Kumiko Hiehata, Nagaokakyo, JP;
Takahiro Sumi, Nagaokakyo, JP;
Jun Adachi, Nagaokakyo, JP;
Jun Urakawa, Nagaokakyo, JP;
Takayuki Tsukizawa, Nagaokakyo, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
An ESD protection device includes opposed electrodes in a ceramic base material and a discharge auxiliary electrode in contact with each of the opposed electrodes which is arranged so as to provide a bridge from the opposed electrode on one side to the opposed electrode on the other side, the discharge auxiliary electrode includes metallic particles, semiconductor particles, and a vitreous material, and bonding is provided through the vitreous material between the metallic particles, between the semiconductor particles, and between the metallic particles and the semiconductor particles. The metallic particles have an average particle diameter X of about 1.0 μm or more, and the relationship between the thickness Y of the discharge auxiliary electrode and the average particle diameter X of the metallic particles satisfies about 0.5≦Y/X≦ about 3.