US 12,111,029 B2Granted

Light-emitting device

AssigneeNichia Corporation

InventorsTatsuya Hayashi, Shinya Okura

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Abstract

A light-emitting device includes a substrate, a light-emitting element, a wavelength conversion layer, a light adjustment member, a light-transmissive member, and a covering member. The light-emitting element includes first and second light-emitting portions. The wavelength conversion layer contains a first phosphor that performs wavelength conversion of first light emitted from the first light-emitting portion and second light emitted from the second light-emitting portion into third light. The light adjustment member is disposed partially over the wavelength conversion layer and overlaps one of the first light-emitting portion and the second light-emitting portion in plan view. The light-transmissive member is disposed over the wavelength conversion layer and the light adjustment member. The covering member covers a side surface of the light-emitting element, a side surface of the wavelength conversion layer, a side surface of the light adjustment member, and a side surface of the light-transmissive member.

Claims13

Dependent claims

A light-emitting device comprising:

a substrate;
a light-emitting element disposed over the substrate, the light-emitting element including a first light-emitting portion and a second light-emitting portion, the first light-emitting portion and the second light-emitting portion each including a first semiconductor layer, a light-emitting layer, and a second semiconductor layer in this order;
a wavelength conversion layer disposed over the light-emitting element and containing a first phosphor that performs wavelength conversion of first light emitted from the first light-emitting portion and second light emitted from the second light-emitting portion into third light;
a light adjustment member disposed partially over the wavelength conversion layer and overlapping one of the first light-emitting portion and the second light-emitting portion in plan view;
a light-transmissive member disposed over the wavelength conversion layer and the light adjustment member;
and
a covering member covering a side surface of the light-emitting element, a side surface of the wavelength conversion layer, a side surface of the light adjustment member, and a side surface of the light-transmissive member.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/534,571Filed 9 Dec 2023 · continuation
Priority: JP 2022-07506628 Apr 2022
Published: US 2024/0102624 A128 Mar 2024
Granted: 8 Oct 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

F21S 41/176
Characterised by the type of light source: light sources where the light is generated by photoluminescent material spaced from a primary light…
H10H 29/24
Assemblies of multiple devices comprising at least one light-emitting semiconductor device covered by group H10H20/00: comprising multiple…
F21S 41/141
Characterised by the type of light source: light emitting diodes [LED]
H10H 29/8513
Wavelength conversion materials: having two or more wavelength conversion materials

Family

Application18/306,626Parent of this continuation · filed 25 Apr 2023
US 2024/0102624 A1Pre-grant publication · published 28 Mar 2024
US 11,879,607 B2Parent of this continuation
US 2023/0349525 A1Published application
US 12,111,029 B2This patent

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

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