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:
Dec. 10, 2013
Filed:
Nov. 24, 2010
Katsuyoshi Nakayama, Tokyo, JP;
Kenji Imakita, Tokyo, JP;
Yasuko Osaki, Tokyo, JP;
Toshihisa Okada, Tokyo, JP;
Akihiro Hishinuma, Koriyama, JP;
Shiro Ohtaki, Tokyo, JP;
Katsuyoshi Nakayama, Tokyo, JP;
Kenji Imakita, Tokyo, JP;
Yasuko Osaki, Tokyo, JP;
Toshihisa Okada, Tokyo, JP;
Akihiro Hishinuma, Koriyama, JP;
Shiro Ohtaki, Tokyo, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
Provided is a light-emitting device provided with a light reflection layer which has a high light reflectivity and which is less susceptible to deterioration of the reflectivity due to corrosion, and having an improved light extraction efficiency. A light-emitting device comprising a substrate having a conductor layer formed on its surface and a light-emitting element disposed on the conductor layer, characterized in that an overcoat layer is formed between the conductor layer and the light-emitting element, and the overcoat layer is a borosilicate glass which comprises, as represented by mol % based on oxides, from 62 to 84% of SiO, from 10 to 25% of BO, from 0 to 5% of AlOand from 0 to 5% in total of at least one of NaO and KO, provided that the total content of SiOand AlOis from 62 to 84%, and may contain from 0 to 10% of MgO and at least one of CaO, SrO and BaO in a total content of at most 5%.