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:
Jan. 07, 2014
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 a plurality of barrier layers. The bather layers comprise a first barrier layer having a first band gap which is the nearest to the second conductive type semiconductor layer, a second barrier layer adjacent to the first barrier, and a third barrier layer between the second bather layer and the first conductive type semiconductor layer. The well layers comprise a first well layer having a third band gap different from the first band gap between the first and second bather layers, and a second well layer between the second barrier layer and the third barrier layer, the second well layer having a second band gap. The first well layer has a thickness thinner than that of the second well layer.