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:
Nov. 27, 2012
Filed:
Jan. 13, 2010
Seung-jae Lee, Cheonan-si, KR;
Seong-deok Hwang, Seoul, KR;
Yu-sik Kim, Seoul, KR;
Sun-pil Youn, Seoul, KR;
Seung-Jae Lee, Cheonan-si, KR;
Seong-Deok Hwang, Seoul, KR;
Yu-sik Kim, Seoul, KR;
Sun-Pil Youn, Seoul, KR;
Samsung Electronics Co., Ltd., Suwon-si, Gyeonggi-do, KR;
Abstract
A light emitting device having a high degree of light extraction efficiency includes a substrate, and a light emitting structure disposed on one surface of the substrate, the substrate having an internal reformed region where the index of refraction differs from the remainder the substrate. The ratio of the depth of the reformed region (distance between the other surface of the substrate and the reformed region) to the thickness of the substrate is in a range of between 1/8 and 9/11.