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:
Mar. 17, 2009
Filed:
Apr. 13, 2006
Jitsuo Kanazawa, Tokyo, JP;
Nobuei Shimojo, Tokyo, JP;
Dai Matsuoka, Nikaho, JP;
Kimio Suto, Nikaho, JP;
Makoto Numata, Yurihonjo, JP;
Yo Saito, Yurihonjo, JP;
Jitsuo Kanazawa, Tokyo, JP;
Nobuei Shimojo, Tokyo, JP;
Dai Matsuoka, Nikaho, JP;
Kimio Suto, Nikaho, JP;
Makoto Numata, Yurihonjo, JP;
Yo Saito, Yurihonjo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A light emitting device has a semiconductor light emitting element and a multilayer chip varistor. The multilayer chip varistor has a multilayer body with a varistor portion therein, and a plurality of external electrodes disposed on an outer surface of the multilayer body. The varistor portion has a varistor layer containing ZnO as a principal component and exhibiting nonlinear voltage-current characteristics, and a plurality of internal electrodes arranged to interpose the varistor layer between them. Each of the external electrodes is connected to a corresponding internal electrode out of the plurality of internal electrodes. The semiconductor light emitting element is disposed on the multilayer chip varistor. The semiconductor light emitting element is connected to corresponding external electrodes out of the plurality of external electrodes so as to be connected in parallel to the varistor portion.