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:
Mar. 02, 2021
Filed:
May. 30, 2019
Seoul Viosys Co., Ltd., Ansan-si, KR;
Ye Seul Kim, Ansan-si, KR;
Kyoung Wan Kim, Ansan-si, KR;
Abstract
A light emitting diode chip including a light emitting structure and a distributed Bragg reflector (DBR) disposed thereon to reflect light, the DBR includes alternatively stacked first material layers having a low refractive index and second material layers having a high refractive index, and, with respect to a peak wavelength λ of light emitted, the DBR includes a first region having pairs of the first and second material layers each having an optical thickness greater than 0.25λ and less than 0.3λ, a last pair of the first and second material layers disposed farthest from the light emitting structure, and a second region between the first region and the last pair, each of the material layers in the second region has an optical thickness less than 0.25λ, and the first material layers have a greater optical thickness deviation than that of the second material layers in the second region.