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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 11145819 B1

PDFFull Text
Date of Patent:
Oct. 12, 2021

Filed:

Jun. 19, 2020

Organic light emitting device

Applicant:

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

Inventors:

Yoshimasa Fujita, Yokohama, JP;

Shuri Sato, Yokohama, JP;

Hiroaki Itoi, Yokohama, JP;

Assignee:

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

Attorney:

Lewis Roca Rothgerber Christie LLP

Primary Examiner:

Gregory D Clark

Int. Cl.
CPC ...
H01L 51/50 (2006.01); H01L 51/00 (2006.01); C07F 7/08 (2006.01); C07C 211/54 (2006.01); C07C 211/58 (2006.01); C07D 209/80 (2006.01); C07D 209/86 (2006.01); C07D 307/91 (2006.01); C07D 405/14 (2006.01);
U.S. Cl.
CPC ...
H01L 51/0061 (2013.01); C07C 211/54 (2013.01); C07C 211/58 (2013.01); C07D 209/80 (2013.01); C07D 209/86 (2013.01); C07D 307/91 (2013.01); C07D 405/14 (2013.01); C07F 7/081 (2013.01); C07F 7/0812 (2013.01); C07F 7/0816 (2013.01); H01L 51/006 (2013.01); H01L 51/0054 (2013.01); H01L 51/0059 (2013.01); H01L 51/0071 (2013.01); H01L 51/0072 (2013.01); H01L 51/0073 (2013.01); H01L 51/0094 (2013.01); H01L 51/0052 (2013.01); H01L 51/0058 (2013.01); H01L 51/5024 (2013.01); H01L 51/5056 (2013.01); H01L 51/5064 (2013.01); H01L 51/5072 (2013.01); H01L 51/5088 (2013.01); H01L 51/5092 (2013.01); H01L 51/5096 (2013.01);
Abstract

An organic light emitting device including an anode; a hole transport region on the anode; an emission layer on the hole transport region; an electron transport region on the emission layer; and a cathode on the electron transport region, wherein the hole transport region includes: a first hole transport layer including a first hole transport material represented by the following Formula 1 or a second hole transport material represented by the following Formula 2; and a second hole transport layer on the first hole transport layer, the second hole transport layer including a third hole transport material represented by the following Formula 3 or a fourth hole transport material represented by the following Formula 4:

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