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:
May. 03, 2022
Filed:
Dec. 17, 2020
Applicant:
Sfc Co., Ltd., Cheongju-si, KR;
Inventors:
Young-Hwan Park, Cheongju-si, KR;
Seo-Yeon Yoon, Seongnam-si, KR;
Chang-Hee Lee, Cheongju-si, KR;
So Young Shim, Daejeon, KR;
Assignee:
SFC CO., LTD., Cheongju-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/50 (2006.01); H01L 51/52 (2006.01); H01L 51/00 (2006.01);
U.S. Cl.
CPC ...
H01L 51/5028 (2013.01); H01L 51/006 (2013.01); H01L 51/0059 (2013.01); H01L 51/0061 (2013.01); H01L 51/0073 (2013.01); H01L 51/5072 (2013.01); H01L 51/5092 (2013.01); H01L 51/5206 (2013.01); H01L 51/5221 (2013.01); H01L 51/5004 (2013.01); H01L 51/5056 (2013.01); H01L 2227/323 (2013.01);
Abstract
The present disclosure relates to an organic light-emitting diode: comprising a first electrode; a second electrode facing the first electrode; and a hole transport layer and a light-emitting layer disposed in that order between the first and the second electrode, wherein the light-emitting layer includes a host and a hole assistant material represented by the following Chemical Formula A, the hole assistant material having a highest occupied molecular orbital (HOMO) energy level lower in absolute value than that of the host.