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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.:

US 11067250 B1

PDFFull Text
Date of Patent:
Jul. 20, 2021

Filed:

Dec. 27, 2017

Light emitting device and integrated light emitting device

Applicant:

Nichia Corporation, Anan, JP;

Inventors:

Yuichi Yamada, Anan, JP;

Motokazu Yamada, Tokushima, JP;

Assignee:

NICHIA CORPORATION, Anan, JP;

Attorney:

Foley & Lardner LLP

Primary Examiner:

Thien M Le

Assistant Examiner:

Tae W Kim

Int. Cl.
CPC ...
F21V 7/00 (2006.01); F21K 9/64 (2016.01); H01L 33/46 (2010.01); H01L 33/48 (2010.01); H01L 25/075 (2006.01); H01L 33/50 (2010.01); H01L 33/60 (2010.01); H01L 33/62 (2010.01); H01L 33/54 (2010.01); F21V 9/30 (2018.01); F21V 17/00 (2006.01); F21V 3/00 (2015.01); F21V 3/02 (2006.01); F21Y 115/10 (2016.01); F21Y 105/16 (2016.01); F21V 13/12 (2006.01);
U.S. Cl.
CPC ...
F21V 7/0083 (2013.01); F21K 9/64 (2016.08); F21V 9/30 (2018.02); F21V 17/002 (2013.01); H01L 25/0753 (2013.01); H01L 33/46 (2013.01); H01L 33/486 (2013.01); H01L 33/502 (2013.01); H01L 33/507 (2013.01); H01L 33/54 (2013.01); H01L 33/60 (2013.01); H01L 33/62 (2013.01); F21V 3/00 (2013.01); F21V 3/02 (2013.01); F21V 13/12 (2013.01); F21Y 2105/16 (2016.08); F21Y 2115/10 (2016.08);
Abstract

A light emitting device includes: a base; a light emitting element; a light reflective film located on an upper surface of the light emitting element; and a encapsulant. A ratio of a maximum width (W) of the encapsulant with respect to a maximum width of the light emitting element, in a side view, is 2 or more. An outer shape of a part of the encapsulant located within a range of elevation angles that is in a range of 10° to 50° from a center of a mounting region at an upper surface of the base on which the light emitting element is mounted is formed to have a curved surface. A ratio (r/W) of a radius of curvature (r) of the curved surface with respect to the maximum width (W) of the encapsulant, in a side view, is in a range of 0.25 to 0.50.

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