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:
Jun. 10, 2014
Filed:
Aug. 14, 2012
Jong Hak Won, Seoul, KR;
Jong Ho NA, Seoul, KR;
Jae IN Yoon, Seoul, KR;
Hoon Ki Hong, Seoul, KR;
SE Hwan Sim, Seoul, KR;
Jong Hak Won, Seoul, KR;
Jong Ho Na, Seoul, KR;
Jae In Yoon, Seoul, KR;
Hoon ki Hong, Seoul, KR;
Se Hwan Sim, Seoul, KR;
LG Innotek Co., Ltd., Seoul, KR;
Abstract
Disclosed are a light emitting device, a method of manufacturing the light emitting device, a light emitting device package and a lighting system. The light emitting device includes a first conductive semiconductor layer; an active layer including a quantum well and a quantum barrier and disposed on the first conductive semiconductor layer; and a second conductive semiconductor layer on the active layer. The active layer includes a first quantum well adjacent to the second conductive semiconductor layer, a second quantum well adjacent to the first quantum well, and a first quantum barrier between the first quantum well and the second quantum well. A recombination rate of electron-hole in the second quantum well is higher than the recombination rate of the electron-hole in the first quantum well, and the first quantum well has an energy level higher than the energy level of the second quantum well.