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. 22, 2013
Filed:
Mar. 24, 2011
Sungkyoon Kim, Seoul, KR;
Woosik Lim, Seoul, KR;
Sungho Choo, Seoul, KR;
Heeyoung Beom, Seoul, KR;
LG Innotek Co., Ltd., Seoul, KR;
Abstract
A light-emitting device includes a substrate, a light-emitting structure on the substrate, the light-emitting structure including a first semiconductor layer, an active layer and a second semiconductor layer, a light-transmitting electrode layer on the second semiconductor layer, and a first reflective layer on the light-transmitting electrode layer, wherein the first reflective layer includes a first layer having a first index of refraction and a second layer having a second index of refraction different from the first index of refraction. Based on this configuration, it is possible to protect the light-emitting device and improve luminous efficiency thereof.