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:
Apr. 16, 2019
Filed:
May. 27, 2016
Lg Innotek Co., Ltd., Seoul, KR;
Jung Hun Jang, Seoul, KR;
Seung Keun Nam, Seoul, KR;
Jeong Soon Yim, Seoul, KR;
Won Hee Choi, Seoul, KR;
LG INNOTEK CO., LTD., Seoul, KR;
Abstract
A light emitting device, according to one embodiment, may comprise: a substrate; a first conductive semiconductor layer disposed on the substrate; an active layer disposed on the first conductive semiconductor layer and generating an ultraviolet light; a second conductive semiconductor layer disposed on the active layer; and a hole injection layer disposed between the active layer and the second conductive semiconductor layer and comprising a first layer comprising AlGaN (0<x≤1) and a second layer comprising GaN. The embodiment has the hole injection layer to be multi-layered, thereby having the effect of effectively preventing the absorption of ultraviolet light.