IP Library › Granted Patent US 12,336,344
Granted Patent B2
US 12,336,344 · App. 18/446,382 · Granted Jun 17, 2025

Method of manufacturing light emitting device

Inventor: Hirosuke Hayashi (Naruto, JP)
Assignee: NISSAN NORTH AMERICA, INC.
H10H20/8515H10H20/8506H10H20/8513H10H20/856H10H20/036H10H20/0361H10H20/0363H10H20/882
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Quick Facts
Patent No.
US 12,336,344
App. No.
18/446,382
Granted
Jun 17, 2025
Kind
B2
Abstract

A method of manufacturing a light emitting device includes: providing a light emitting structure including a light emitting element having a top surface and lateral surfaces, a wavelength conversion member having a top surface, a bottom surface, and lateral surfaces, with the bottom surface of the wavelength conversion member facing the top surface of the light emitting element, and a reflecting member surrounding the lateral surfaces of the light emitting element and the lateral surfaces of the wavelength conversion member, the reflecting member having a top surface; and supplying a covering member to cover the top surface of the wavelength conversion member and the top surface of the reflecting member, the covering member containing at least one of a pigment and a dye so that a body color of the covering member is the same or a similar color as a body color of the wavelength conversion member.

Claims (20)

1. A method of manufacturing a light emitting device comprising:

providing a light emitting structure including

a light emitting element having a top surface and lateral surfaces,

a wavelength conversion member having a top surface, a bottom surface, and lateral surfaces, with the bottom surface of the wavelength conversion member facing the top surface of the light emitting element, and

a reflecting member surrounding the lateral surfaces of the light emitting element and the lateral surfaces of the wavelength conversion member, the reflecting member having a top surface; and

supplying a covering member to cover the top surface of the wavelength conversion member and the top surface of the reflecting member, the covering member containing at least one of a pigment and a dye so that a body color of the covering member is the same or a similar color as a body color of the wavelength conversion member, the covering member being configured not to convert a wavelength of light entered into the covering member.

2. The method of manufacturing a light emitting device according to claim 1 , wherein

the supplying of the covering member is performed by a spray method.

3. The method of manufacturing a light emitting device according to claim 1 , wherein

the supplying of the covering member includes supplying the covering member so that a thickness of the covering member is smaller than a thickness of the wavelength conversion member.

4. The method of manufacturing a light emitting device according to claim 1 , wherein

the supplying of the covering member includes supplying the covering member so that a refractive index of a base material of the covering member is smaller than a refractive index of a base material of the wavelength conversion member.

5. The method of manufacturing a light emitting device according to claim 1 , wherein

the supplying of the covering member includes supplying the covering member having a non-planar top surface.

6. The method of manufacturing a light emitting device according to claim 1 , wherein

the providing of the light emitting structure includes providing an adhesive member between the top surface of the light emitting element and the bottom surface of the wavelength conversion member.

7. The method of manufacturing a light emitting device according to claim 1 , wherein

the providing of the light emitting structure includes

providing the light emitting element with a pair of positive and negative electrodes being arranged on a bottom surface of the light emitting element, and

supplying the reflecting member to cover the bottom surface of the light emitting element and lateral surfaces of the electrodes.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 9, 2023
From: HAYASHI, HIROSUKE
To: NICHIA CORPORATION
Reel/Frame 064529/0889 →
Priority Claims (1)
JP 2018-003910 · Jan 15, 2018 · national
Continuity (3)
Division 17852327 · Jun 28, 2022
Continuation 16246679 · Jan 14, 2019
Related Publication 20230387361A1 · Nov 30, 2023
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