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:
Oct. 17, 2017
Filed:
Sep. 20, 2016
Seoul Viosys Co., Ltd., Ansan-si, KR;
Jong Hyeon Chae, Ansan-si, KR;
Jong Min Jang, Ansan-si, KR;
Won Young Roh, Ansan-si, KR;
Dae Woong Suh, Ansan-si, KR;
Min Woo Kang, Ansan-si, KR;
Joon Sub Lee, Ansan-si, KR;
Hyun A Kim, Ansan-si, KR;
Kyoung Wan Kim, Ansan-si, KR;
Chang Yeon Kim, Ansan-si, KR;
Seoul Viosys Co., Ltd., Ansan-si, KR;
Abstract
An LED is provided to include: a first conductive type semiconductor layer; an active layer positioned over the first conductive type semiconductor layer; a second conductive type semiconductor layer positioned over the active layer; and a defect blocking layer comprising a masking region to cover at least a part of the top surface of the second conductive semiconductor layer and an opening region to partially expose the top surface of the second conductive type semiconductor layer, wherein the active layer and the second conductive type semiconductor layer are disposed to expose a part of the first conductive type semiconductor layer, and wherein the defect blocking layer comprises a first region and a second region surrounding the first region, and a ratio of the area of the opening region to the area of the masking region in the first region is different from a ratio of die area of the opening region to the area of the masking region in the second region.