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. 28, 2015
Filed:
Dec. 17, 2012
Toyoda Gosei Co., Ltd., Kiyosu-shi, Aichi-ken, JP;
Masakata Koseki, Kiyosu, JP;
Makoto Sato, Kiyosu, JP;
Tomoko Suzuki, Kiyosu, JP;
Takeshi Matsushima, Kiyosu, JP;
Hiroyuki Tajima, Kiyosu, JP;
Yuichi Yano, Kiyosu, JP;
Toyoda Gosei Co., Ltd., Kiyosu-Shi, Aichi-Ken, JP;
Abstract
A light-emitting device includes a light-emitting element mounted on a lead frame, and a sealing material sealing the light-emitting element and having a thickness of not more than 1 mm and including a silicone resin as a main component. The sealing material includes a first gas barrier layer that a physical property value obtained by dividing a difference between a value of an average spin-spin relaxation time ofH nuclei at a resonance frequency of 25 MHz at 140° C. and that at 25° C. by 115 is not more than 3.5 and the average spin-spin relaxation time at 140° C. is not more than 500 μsec.