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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 9543526 B1

PDFFull Text
Date of Patent:
Jan. 10, 2017

Filed:

Feb. 09, 2012

Nitrogen-containing aromatic compounds and organic electroluminescent device

Applicants:

Takaya Ishiyama, Kitakyushu, JP;

Hiroyuki Hayashida, Kitakyushu, JP;

Mitsuru Sakai, Kitakyushu, JP;

Masashi Niina, Kitakyushu, JP;

Kazuto Shiraishi, Kitakyushu, JP;

Kazuaki Yoshimura, Kitakyushu, JP;

Inventors:

Takaya Ishiyama, Kitakyushu, JP;

Hiroyuki Hayashida, Kitakyushu, JP;

Mitsuru Sakai, Kitakyushu, JP;

Masashi Niina, Kitakyushu, JP;

Kazuto Shiraishi, Kitakyushu, JP;

Kazuaki Yoshimura, Kitakyushu, JP;

Assignee:

NIPPON STEEL & SUMIKIN CHEMICAL CO., LTD., Tokyo, JP;

Attorney:

Cheng Law Group, PLLC

Primary Examiner:

Andrew K Bohaty

Int. Cl.
CPC ...
H01L 51/54 (2006.01); C09K 11/06 (2006.01); H01L 51/00 (2006.01); C07D 471/14 (2006.01); C07D 491/147 (2006.01); C07D 495/14 (2006.01); H01L 51/50 (2006.01);
U.S. Cl.
CPC ...
H01L 51/0065 (2013.01); C07D 471/14 (2013.01); C07D 491/147 (2013.01); C07D 495/14 (2013.01); H01L 51/0067 (2013.01); H01L 51/0068 (2013.01); H01L 51/0071 (2013.01); H01L 51/0072 (2013.01); H01L 51/0073 (2013.01); H01L 51/0074 (2013.01); H01L 51/0037 (2013.01); H01L 51/0081 (2013.01); H01L 51/0085 (2013.01); H01L 51/5016 (2013.01); H01L 51/5056 (2013.01);
Abstract

Provided are a nitrogen-containing aromatic compound useful for an organic electroluminescent device, and an organic electroluminescent device (organic EL device) that improves luminous efficiency of the device and sufficiently ensures driving stability of the device. The nitrogen-containing aromatic heterocyclic compound is represented by the following formula (1). The organic EL device includes an organic layer that contains the nitrogen-containing aromatic heterocyclic compound between an anode and a cathode laminated on a substrate. In the formula (1), a ring A represents an aromatic ring represented by the formula (1a) and fused with two adjacent rings, a ring B represents a heterocycle represented by the formula (1b) and fused with two adjacent rings, Y's each represent C—R or N, X's each represent N—Z, O, S, or Se, R represents hydrogen, an alkyl group, an aromatic group, or the like, and Z represents an alkyl group, an aromatic group, or the like.

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