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:
Dec. 03, 2019
Filed:
Jul. 10, 2018
Applicant:
Lg Display Co., Ltd., Seoul, KR;
Inventors:
Assignee:
LG Display Co., Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/52 (2006.01); H01L 51/00 (2006.01); H01L 51/56 (2006.01);
U.S. Cl.
CPC ...
H01L 51/5203 (2013.01); H01L 51/0034 (2013.01); H01L 51/0097 (2013.01); H01L 51/5268 (2013.01); H01L 51/5275 (2013.01); H01L 51/56 (2013.01); H01L 51/5212 (2013.01); H01L 51/5228 (2013.01); H01L 51/5237 (2013.01); H01L 2251/5361 (2013.01);
Abstract
A lighting apparatus using an organic light-emitting diode (OLED) of the present disclosure is characterized in that an inner light extraction layer is provided between a substrate and an OLED, and concurrently, a multi-buffer layer, of which a refractive index is gradually changed, is formed on the inner light extraction layer. According to the present disclosure, light extraction due to scattering may be improved by applying the inner light extraction layer, and a waveguide mode may be extracted as light by applying the multi-buffer layer, thereby improving luminous efficiency.