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:
Oct. 04, 2011
Filed:
Sep. 12, 2005
Yukio Shakuda, Kyoto, JP;
Toshio Nishida, Kyoto, JP;
Masayuki Sonobe, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
There is provided a highly reliable semiconductor light emitting device even in using for street lamps or traffic signals, which can be used in place of electric lamps or fluorescent lamps by protecting from surges such as static electricity or the like. A plurality of light emitting units () are formed, by forming a semiconductor lamination portion by laminating semiconductor layers on a substrate so as to form a light emitting layer, by electrically separating the semiconductor lamination portion into a plurality, and by providing a pair of electrodes () and (). The light emitting units () are respectively connected in series and/or in parallel with wiring films (). An inductor () absorbing surges is connected, in series, to the plurality of light emitting units () connected in series between electrode pads () and () connected to an external power source. For an example, the inductor () is formed by arranging the plurality of light emitting units () in a whirl shape.