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. 12, 2016
Filed:
Jul. 17, 2014
Applicant:
Lg Innotek Co., Ltd., Seoul, KR;
Inventors:
Assignee:
LG INNOTEK CO., LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/32 (2010.01); H01L 33/36 (2010.01); H01L 33/00 (2010.01); H01L 33/22 (2010.01);
U.S. Cl.
CPC ...
H01L 33/32 (2013.01); H01L 33/002 (2013.01); H01L 33/36 (2013.01); H01L 33/22 (2013.01);
Abstract
The light emitting device includes a first semiconductor layer, a second semiconductor layer and an active layer provided between the first semiconductor layer and the second semiconductor layer. A first light extraction layer is provided on the first semiconductor layer and includes a nitride semiconductor layer. The first light extraction layer includes a plurality of first layers. The refractive indexes of the first layers decrease with increasing distance from the first semiconductor layer.