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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.:

US 11706983 B1

PDFFull Text
Date of Patent:
Jul. 18, 2023

Filed:

May. 28, 2020

Organic light-emitting device

Applicant:

Samsung Electronics Co., Ltd., Suwon-si, KR;

Inventors:

Sangyeob Lee, Hwaseong-si, KR;

Sangdong Kim, Seoul, KR;

Jiwhan Kim, Seoul, KR;

Banglin Lee, Su-won-si, KR;

Seungyeon Kwak, Yongin-si, KR;

Hyeonho Choi, Seoul, KR;

Assignee:

Samsung Electronics Co., Ltd., Gyeonggi-do, KR;

Attorney:

Harness, Dickey & Pierce, P.L.C.

Primary Examiner:

Sean M DeGuire

Int. Cl.
CPC ...
H01L 51/00 (2006.01); H10K 85/60 (2023.01); C09K 11/02 (2006.01); C09K 11/06 (2006.01); H10K 50/11 (2023.01); H10K 101/40 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 101/30 (2023.01);
U.S. Cl.
CPC ...
H10K 85/6572 (2023.02); C09K 11/025 (2013.01); C09K 11/06 (2013.01); H10K 50/11 (2023.02); H10K 85/654 (2023.02); H10K 85/657 (2023.02); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 2101/30 (2023.02); H10K 2101/40 (2023.02);
Abstract

An organic light-emitting device (OLED) includes a first electrode, a second electrode, an emission layer between the first electrode and the second electrode and including an electron-transporting host and a hole-transporting host, a hole transport region between the first electrode and the emission layer and including a hole transport layer, and an electron transport region between the emission layer and the second electrode and including an electron transport layer, wherein the OLED satisfies Equations 1 and 2 below:0.75 eV≤|LUMO−LUMO|≤0.90 eV  <Equation 1>|()−(|<0.15 eV  <Equation 2> wherein in Equations 1 and 2, LUMOrefers to a lowest unoccupied molecular orbital (LUMO) energy level of the electron-transporting host, LUMOrefers to an LUMO energy level of the hole-transporting host, E(S) refers to a singlet energy level of the electron-transporting host, and E(S) refers to a singlet energy level of the hole-transporting host.

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