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. 12, 2015
Filed:
Jul. 12, 2012
Applicants:
Chung-ying Chang, Zhongli, TW;
Dennis Wang, Tainan, TW;
Jenq-dar Tsay, Kaohsiung, TW;
Inventors:
Assignee:
Epistar Corporation, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/00 (2010.01); H01L 33/20 (2010.01);
U.S. Cl.
CPC ...
H01L 33/20 (2013.01);
Abstract
A light-emitting device disclosed herein comprises a patterned substrate having a plurality of cones, wherein a space is between two adjacent cones. A light-emitting stack formed on the cones. Furthermore, the cones comprise an area ratio of a top area of the cone and a bottom area of the cone which is less than 0.0064.