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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 11257990 B1

PDFFull Text
Date of Patent:
Feb. 22, 2022

Filed:

Sep. 26, 2018

Light emitting device

Applicant:

Nichia Corporation, Anan, JP;

Inventors:

Atsushi Bando, Itano-gun, JP;

Kazuya Matsuda, Anan, JP;

Assignee:

NICHIA CORPORATION, Anan, JP;

Attorney:

Foley & Lardner LLP

Primary Examiner:

Marcos D Pizarro

Assistant Examiner:

Antonio B Crite

Int. Cl.
CPC ...
H01L 33/50 (2010.01); H01L 25/075 (2006.01); H01L 27/15 (2006.01); H01L 33/52 (2010.01); H01L 33/20 (2010.01); H01L 33/58 (2010.01); H01L 33/62 (2010.01);
U.S. Cl.
CPC ...
H01L 33/504 (2013.01); H01L 25/0753 (2013.01); H01L 27/15 (2013.01); H01L 33/50 (2013.01); H01L 33/507 (2013.01); H01L 33/52 (2013.01); H01L 33/62 (2013.01);
Abstract

A light emitting device includes: a first light emitting element and a second light emitting element, each having a peak emission wavelength in a range of 430 nm to 480 nm; a first light transmissive member disposed on an upper face of the first light emitting element and containing a first phosphor; a second light transmissive member disposed on an upper face of the second light emitting element; and an encapsulant covering the first light transmissive member and the second light transmissive member and containing a second phosphor. The first light emitting element and the second light emitting element are configured to be independently driven. A chromaticity of light exiting from the first light transmissive member differs from a chromaticity of light exiting from the second light transmissive member.

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