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:
May. 06, 2014
Filed:
Mar. 31, 2011
Applicants:
Hyung-soo Ahn, Busan, KR;
Min Yang, Busan, KR;
Hongju Ha, Busan, KR;
Inventors:
Assignee:
CSsolution Co., Ltd., Busan, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A light-emitting device includes a semiconductor layer, a light-emitting stack structure formed on a first surface of the semiconductor layer, and a plurality of inverted pyramid structures formed on a second surface of the semiconductor layer opposite to the first surface. Each of the inverted pyramid structures has a sectional area increasing as each of the inverted pyramid structures is more extended in a vertical direction from the second surface.