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:
Dec. 30, 2025
Filed:
Jan. 18, 2023
Nichia Corporation, Anan, JP;
Koji Asada, Tokushima, JP;
Takuya Okada, Anan, JP;
NICHIA CORPORATION, Anan, JP;
Abstract
A light emitting element comprises a semiconductor structure which includes an n-side layer, a p-side layer, and an ultraviolet light emitting active layer positioned between the n-side layer and the p-side layer, each being made of a nitride semiconductor, an n-electrode electrically connected to the n-side layer, and a p-electrode electrically connected to the p-side layer. The active layer has a well layer containing Al, a barrier layer containing Al, and holes defined by the lateral faces of the well layer and the lateral faces of the barrier layer. The p-side layer has a first layer containing Al, a second layer containing Al disposed on the first layer and in contact with the lateral faces of the well layer, and a third layer disposed on the second layer. The third layer is smaller in thickness than the first layer.