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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 11825670 B1

PDFFull Text
Date of Patent:
Nov. 21, 2023

Filed:

Sep. 24, 2020

Organic light-emitting device

Applicant:

Samsung Display Co., Ltd., Yongin-si, KR;

Inventors:

Wonsuk Han, Yongin-si, KR;

Donghui Lee, Yongin-si, KR;

Hakchoong Lee, Yongin-si, KR;

Dongchan Kim, Yongin-si, KR;

Jiyoung Moon, Yongin-si, KR;

Jihye Lee, Yongin-si, KR;

Chulsoon Lee, Yongin-si, KR;

Haemyeong Lee, Yongin-si, KR;

Yoonhyeung Cho, Yongin-si, KR;

Assignee:

Samsung Display Co., Ltd., Yongin-si, KR;

Attorney:

Lewis Roca Rothgerber Christie LLP

Primary Examiner:

Sean M DeGuire

Int. Cl.
CPC ...
H10K 50/11 (2023.01); H10K 50/16 (2023.01); H10K 50/17 (2023.01); H10K 50/18 (2023.01); H10K 50/19 (2023.01); H10K 50/155 (2023.01); H10K 50/15 (2023.01); H10K 59/123 (2023.01); H10K 85/60 (2023.01); H10K 101/40 (2023.01); H10K 101/10 (2023.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
H10K 50/11 (2023.02); H10K 50/155 (2023.02); H10K 50/156 (2023.02); H10K 50/16 (2023.02); H10K 50/17 (2023.02); H10K 50/171 (2023.02); H10K 50/18 (2023.02); H10K 50/19 (2023.02); H10K 59/123 (2023.02); H10K 85/624 (2023.02); H10K 85/626 (2023.02); H10K 2101/10 (2023.02); H10K 2101/40 (2023.02); H10K 2102/00 (2023.02); H10K 2102/351 (2023.02);
Abstract

An organic light-emitting device includes an auxiliary layer located between a first electrode and a hole injection layer or a hole transport layer and including a metal fluoride. The metal of the metal fluoride may be a Group III metal having a high work function of 3.8 eV or more. The hole injection barrier at the interface between the first electrode and the hole injection layer may be adjusted by the fluoride of the high work function metal in the auxiliary layer so that the electron-hole charge balance and the efficiency of the organic light-emitting device may be improved.

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