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. 17, 2013
Filed:
Feb. 01, 2012
Jong Hak Won, Seoul, KR;
Jong Hak Won, Seoul, KR;
LG Innotek Co., Ltd., Seoul, KR;
Abstract
A light emitting device is provided. The light emitting device comprises an active layer comprising a plurality of well layers and barrier layers. The barrier layers comprise a first barrier layer which is the nearest to a second conductive type semiconductor layer and has a first band gap, a second barrier layer having a third band gap, and a third barrier layer having the first band gap between the second barrier layer and a first conductive type semiconductor layer. The well layers comprise a first well layer having a second band gap between the first and the second barrier layers, and a second well layer between the second barrier layer and the third barrier layer. The second barrier layer is disposed between the first and the second well layers, and the third band gap is narrower than the first band gap and wider than the second band gap.