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. 13, 2024
Filed:
Jul. 31, 2020
Samsung Display Co., Ltd., Yongin-si, KR;
Hyoungkun Kim, Yongin-si, KR;
Samil Kho, Yongin-si, KR;
Donghwan Kim, Yongin-si, KR;
Jinwoong Kim, Yongin-si, KR;
Seunggak Yang, Yongin-si, KR;
Kwanhee Lee, Yongin-si, KR;
Junyoung Lee, Yongin-si, KR;
Samsung Display Co., Ltd., Yongin-si, KR;
Abstract
An organic light-emitting includes a first electrode having a work function greater than about 4.9 eV and less than about 5.2 eV, a second electrode facing the first electrode, an organic layer disposed between the first electrode and the second electrode and including an emission layer, a hole transport region disposed between the first electrode and the emission layer, wherein the hole transport region includes a first hole transport layer including a first hole-transporting material, and the first hole transport layer is substantially free of a p-dopant.