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:
Feb. 07, 2012
Filed:
Feb. 09, 2011
Applicant:
Hwan-kuk Yuh, Gyeonggi-do, KR;
Inventor:
Hwan-Kuk Yuh, Gyeonggi-do, KR;
Assignee:
Theleds Co., Ltd., Gyeonggi-Do, KR;
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/12 (2010.01);
U.S. Cl.
CPC ...
Abstract
There are provided a semiconductor substrate configured to improve the light extraction efficiency of a light emitting device, and a light emitting device using the substrate. The light emitting device includes the substrate, a buffer layer, and a light emitting structure, and the buffer layer and the light emitting structure being sequentially stacked on the substrate. The substrate includes a plurality of lenses disposed on a top surface thereof, and the lenses have a horn shape and are configured such that the buffer layer grows both on the top surface of the substrate and lateral surfaces of the lenses.