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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 10689568 B1

PDFFull Text
Date of Patent:
Jun. 23, 2020

Filed:

Jul. 01, 2019

Organic electroluminescent device

Applicant:

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

Inventors:

Toshiyuki Matsuura, Yokohama, JP;

Hiroaki Itoi, Yokohama, JP;

Naoya Sakamoto, Yokohama, JP;

Nobutaka Akashi, Yokohama, JP;

Assignee:

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

Attorney:

Lewis Roca Rothgerber Christie LLP

Primary Examiner:

Amanda C Walke

Int. Cl.
CPC ...
C09K 11/02 (2006.01); H01L 51/50 (2006.01); C07D 403/10 (2006.01); C07C 211/61 (2006.01); C07C 211/43 (2006.01); C07C 211/44 (2006.01); C07C 211/49 (2006.01); C07D 401/14 (2006.01); H01L 51/00 (2006.01);
U.S. Cl.
CPC ...
C09K 11/025 (2013.01); C07C 211/43 (2013.01); C07C 211/44 (2013.01); C07C 211/49 (2013.01); C07C 211/61 (2013.01); C07D 401/14 (2013.01); C07D 403/10 (2013.01); H01L 51/006 (2013.01); H01L 51/0054 (2013.01); H01L 51/0058 (2013.01); H01L 51/0067 (2013.01); H01L 51/0072 (2013.01); H01L 51/5064 (2013.01); H01L 51/0059 (2013.01); H01L 51/0073 (2013.01); H01L 51/0074 (2013.01);
Abstract

An organic electroluminescent device of which emission life may be improved. The organic electroluminescent device includes an anode, an emission layer, and an anode-side hole transport layer provided between the anode and the emission layer and including an anode-side hole transport material. An electron accepting material is doped in the anode-side hole transport layer. An intermediate hole transport material layer is provided between the anode-side hole transport layer and the emission layer and includes an intermediate hole transport material, and an emission layer-side hole transport layer is provided between the intermediate hole transport material layer and the emission layer and adjacent to the emission layer. The emission layer-side hole transport layer includes an emission layer-side hole transport material represented by the following Formula 1

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