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:
Jul. 24, 2018
Filed:
May. 20, 2016
Applicant:
Lg Display Co., Ltd., Seoul, KR;
Inventors:
TaeSeok Lim, Seoul, KR;
Taeshick Kim, Gyeonggi-do, KR;
Seung Kim, Seoul, KR;
Jaeseung Jang, Seoul, KR;
Assignee:
LG Display Co., Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 27/32 (2006.01); H01L 51/52 (2006.01); H01L 51/50 (2006.01);
U.S. Cl.
CPC ...
H01L 27/3211 (2013.01); H01L 51/5036 (2013.01); H01L 51/5044 (2013.01); H01L 51/5209 (2013.01); H01L 51/5225 (2013.01); H01L 27/322 (2013.01); H01L 27/3209 (2013.01); H01L 27/3244 (2013.01);
Abstract
An organic light emitting display device reduces a grayscale-based color difference of the organic light emitting display device. The organic light emitting display device includes opposite first and second electrodes on a substrate and a plurality of emission parts between the first and second electrodes. At least one among the plurality of emission parts includes a first emission layer and a second emission layer having different wavelength ranges. A dopant content in the first emission layer is lower than a dopant content in the second emission layer.