LED with multilayer light extractor having a refractive index gradient

YJ Sung, JH Jang, SH Jung - US Patent 9,312,445, 2016 - Google Patents
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 semi …

LIGHT EMITTING DEVICE HAVING MgO PYRAMID STRUCTURE AND METHOD FOR FABRICATING THE SAME

JL Lee, JH Son, HK Yu - US Patent App. 14/644,994, 2015 - Google Patents
(57) ABSTRACT A method for fabricating a light emitting device, the method including
forming a semiconductor stack structure including a first semiconductor layer, a second …