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.:
Date of Patent:
Jul. 14, 2026
Filed:
Feb. 05, 2021
Nichia Corporation, Anan, JP;
Hiroshi Miyairi, Yokohama, JP;
Takayuki Igarashi, Yokohama, JP;
Shinya Endo, Yokohama, JP;
Yoshifumi Hodono, Yokohama, JP;
Yoshimi Katsumoto, Yokohama, JP;
NICHIA CORPORATION, Anan, JP;
Abstract
A light-emitting device includes a substrate, a light-emitting element provided on the substrate, the light-emitting element being configured to emit a first light, a wavelength conversion layer provided on the light-emitting element and containing a plurality of wavelength conversion particles configured to convert a wavelength of a part of the first light and to emit a second light, a light-transmissive plate provided above the wavelength conversion layer, and a wall including a light-reflective material, the wall surrounding the wavelength conversion layer and the light-transmissive plate and being in contact with a lateral surface of the light-transmissive plate at an inner surface of the wall. An upper portion of the wavelength conversion layer includes protrusions and recesses defined by the plurality of wavelength conversion particles. The wavelength conversion layer and the light-transmissive plate define an air layer therebetween.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile