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. 23, 2016
Filed:
Nov. 11, 2013
Seoul Viosys Co., Ltd., Ansan-si, KR;
Ye Seul Kim, Ansan-si, KR;
Shin Hyoung Kim, Ansan-si, KR;
Kyoung Wan Kim, Ansan-si, KR;
Yeo Jin Yoon, Ansan-si, KR;
Jun Woong Lee, Ansan-si, KR;
Tae Gyun Kim, Ansan-si, KR;
Seoul Viosys Co., Ltd., Ansan-si, KR;
Abstract
A light-emitting device according to an exemplary embodiment of the present invention includes a first conductivity-type semiconductor layer disposed on a substrate; an active layer disposed on the first conductivity-type semiconductor layer; a second conductivity-type semiconductor layer disposed on the active layer; and an irregular convex-concave pattern disposed on a surface of the first conductivity-type semiconductor layer. The irregular convex-concave pattern includes convex portions and concave portions, and the convex portions have irregular heights and the concave portions have irregular depths. The first conductivity-type semiconductor layer including the irregular convex-concave pattern is exposed from the active layer and the second conductivity-type semiconductor layer.