Abstract: There is provided a photonic crystal light emitting device including: a substrate; a plurality of nano rod light emitting structures formed on the substrate to be spaced apart from one another, each of the nano rod light emitting structures including a first conductivity type semiconductor layer, an active layer and a second conductivity type semiconductor layer; and first and second electrodes electrically connected to the first and second conductivity type semiconductor layers, respectively, wherein the nano rod light emitting structures are arranged with a predetermined size and period so as to form a photonic band gap for light emitted from the active layer, whereby the nano rod light emitting structures define a photonic crystal structure. In the photonic crystal light emitting device, the nano rod light emitting structures are arranged to define a photonic crystal to enhance light extraction efficiency.
Type:
Grant
Filed:
July 30, 2008
Date of Patent:
July 27, 2010
Assignee:
Samsung LED., Ltd.
Inventors:
Dong Yul Lee, Seong Ju Park, Min Ki Kwon, Ja Yeon Kim, Dong Joon Kim, Yong Chun Kim, Je Won Kim