US 2015/0189703 A1Published application

Light emitting device

AssigneeNichia Corporation

InventorYuji AKAZAWA

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Abstract

A light emitting device comprising: a base; a light emitting element arranged on a surface of the base; a first resin layer arranged to surround a side portion of the light emitting element and to be spaced apart from the side portion; and a second resin layer arranged on the surface of the base, the second resin layer being present at least on a top of the light emitting element, on a top of the first resin layer, and in an area between the light emitting element and the first resin layer, wherein the first resin layer comprises a light transmissive resin and a first fluorescent material, wherein the second resin layer comprises a light transmissive resin and a second fluorescent material, and wherein the second fluorescent material exhibits higher heat resistance than that of the first fluorescent material.

Claims30

Dependent claims

A light emitting device comprising:

a base;
a light emitting element arranged on a surface of the base;
a first resin layer arranged on the surface of the base to surround a side portion of the light emitting element and to be spaced apart from the side portion;
and
a second resin layer arranged on the surface of the base, the second resin layer being present at least on a top of the light emitting element, on a top of the first resin layer, and in an area between the light emitting element and the first resin layer,
wherein the first resin layer comprises a light transmissive resin and a first fluorescent material excited by at least part of light emitted by the light emitting element to emit light,
wherein the second resin layer comprises a light transmissive resin and a second fluorescent material excited by at least part of light emitted by the light emitting element to emit light, and
wherein the second fluorescent material exhibits higher heat resistance than that of the first fluorescent material.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/581,015Filed 23 Dec 2014
Priority: JP 2013-27268827 Dec 2013
Published: 2 Jul 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification18 codes

H10H 20/8516
Wavelength conversion means: having a non-uniform spatial arrangement or non-uniform concentration, e.g. patterned wavelength conversion layer or…
H10H 20/8513
Wavelength conversion materials: having two or more wavelength conversion materials
H10H 29/8513
Wavelength conversion materials: having two or more wavelength conversion materials
H10H 29/8516
Wavelength conversion means: having a non-uniform spatial arrangement or non-uniform concentration, e.g. patterned wavelength conversion layer,…

Family

US 9,401,462 B2Related patent
US 2015/0189703 A1This patent

From the US filing history. Foreign family members aren’t listed.

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