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:
Feb. 18, 2020
Filed:
Jul. 28, 2017
Applicant:
Lg Display Co., Ltd., Seoul, KR;
Inventors:
Assignee:
LG Display Co., Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/50 (2006.01); H01L 51/52 (2006.01);
U.S. Cl.
CPC ...
H01L 51/5044 (2013.01); H01L 51/5004 (2013.01); H01L 51/5088 (2013.01); H01L 51/5056 (2013.01); H01L 51/5203 (2013.01);
Abstract
An organic light-emitting device includes: an anode and a cathode opposite each other, an organic light-emitting layer between the anode and the cathode, and a hole transport unit between the anode and the organic light-emitting layer and including two or more pairs of hole injection layers and hole transport layers each formed of a respective single material, the hole injection layers and the hole transport layers being alternately stacked.