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. 22, 2022
Filed:
Dec. 11, 2018
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Hwakyung Kim, Daejeon, KR;
Jaechol Lee, Daejeon, KR;
Seokhee Yoon, Daejeon, KR;
Jinseck Kim, Daejeon, KR;
Esder Kang, Daejeon, KR;
Jiyeon Shin, Daejeon, KR;
Keunsoo Lee, Daejeon, KR;
Byungjae Kim, Daejeon, KR;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/50 (2006.01); H01L 51/00 (2006.01);
U.S. Cl.
CPC ...
H01L 51/5088 (2013.01); H01L 51/0003 (2013.01); H01L 51/006 (2013.01); H01L 51/0052 (2013.01); H01L 51/0061 (2013.01); H01L 51/0072 (2013.01); H01L 2251/552 (2013.01); H01L 2251/558 (2013.01);
Abstract
The present specification relates to an organic light emitting device comprising a first electrode; a second electrode provided opposite to the first electrode; and one or more organic material layers comprising a hole injection layer provided between the first electrode and the second electrode, wherein the hole injection layer comprises a first host, a second host and a dopant, and the first host and the second host have a HOMO energy level value difference of 0.2 eV or greater.