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:
Nov. 20, 2018
Filed:
Apr. 19, 2018
Nichia Corporation, Anan-shi, Tokushima, JP;
Hiroyuki Inoue, Itano-gun, JP;
Tomohiro Shimooka, Tokushima, JP;
NICHIA CORPORATION, Anan-Shi, JP;
Abstract
A light-emitting element includes: a sapphire substrate including: a principal surface that is in a c-plane of the sapphire substrate, and a plurality of projections on the principal surface, wherein each of the plurality of projections has a shape of pseudo-hexagonal pyramid including six lateral surfaces, each of the six lateral surfaces including an inwardly curved surface portion, and wherein, in a top view of the sapphire substrate, each of the plurality of projections has a shape of a pseudo-hexagon; and a semiconductor layered body comprising a nitride semiconductor on the principal surface side of the sapphire substrate, the semiconductor layered body including an active layer.