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:
Sep. 22, 2020
Filed:
May. 20, 2016
Applicant:
Nichia Corporation, Anan-shi, Tokushima, JP;
Inventors:
Motokazu Yamada, Tokushima, JP;
Tomonori Ozaki, Anan, JP;
Shinsaku Ikuta, Tokushima, JP;
Yuichi Yamada, Anan, JP;
Assignee:
NICHIA CORPORATION, Anan-Shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/54 (2010.01); H01L 33/58 (2010.01); H01L 33/56 (2010.01); H01L 33/50 (2010.01); H01L 33/52 (2010.01);
U.S. Cl.
CPC ...
H01L 33/54 (2013.01); H01L 33/50 (2013.01); H01L 33/501 (2013.01); H01L 33/502 (2013.01); H01L 33/504 (2013.01); H01L 33/52 (2013.01); H01L 33/56 (2013.01); H01L 33/58 (2013.01); H01L 2933/0091 (2013.01);
Abstract
A light emitting device includes a light emitting element; a sealing resin covering the light emitting element; and a light diffusing material contained in the sealing resin. When a difference in refractive index at 10° C. between the sealing resin and the light diffusing material is Δn1 and a difference in refractive index at 50° C. between the sealing resin and the light diffusing material is Δn2, a ratio of Δn2 to Δn1 is in a range of 95% to 105%.