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:
Oct. 03, 2022
Filed:
Nov. 06, 2019
Applicant:
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Inventors:
Kazuki Nishimura, Sodegaura, JP;
Sayaka Mizutani, Sodegaura, JP;
Assignee:
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/00 (2005.12); H01L 51/50 (2005.12);
U.S. Cl.
CPC ...
H01L 51/50 (2012.12); H01L 51/0052 (2012.12); H01L 51/0054 (2012.12); H01L 51/0055 (2012.12); H01L 51/0056 (2012.12); H01L 51/0067 (2012.12); H01L 51/0072 (2012.12); H01L 51/0073 (2012.12); H01L 51/0074 (2012.12); H01L 51/0085 (2012.12); H01L 2251/5384 (2012.12);
Abstract
An organic electroluminescence device includes: a cathode; an anode; and an organic layer having one or more layers and provided between the anode and the cathode, in which the organic layer includes an emitting layer, and the emitting layer includes a first host material, a second host material and a phosphorescent dopant material. The first host material is a compound represented by a formula (1) below. The second host material is a compound represented by a formula (4) below.