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:
Dec. 29, 2015
Filed:
Jan. 17, 2012
Won Cheol Seo, Ansan-si, KR;
Joo Won Choi, Ansan-si, KR;
Won Cheol Seo, Ansan-si, KR;
Joo Won Choi, Ansan-si, KR;
Seoul Viosys Co., Ltd., Ansan-si, KR;
Abstract
Disclosed are a light emitting diode (LED) having a photonic crystal structure and a method of fabricating the same. An LED comprises a support substrate, a lower semiconductor layer positioned on the support substrate, an upper semiconductor layer positioned over the lower semiconductor layer, an active region positioned between the lower and upper semiconductor layers, and a photonic crystal structure embedded in the lower semiconductor layer. The photonic crystal structure may prevent the loss of the light advancing toward the support substrate and improve the light extraction efficiency.