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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 9905770 B1

PDFFull Text
Date of Patent:
Feb. 27, 2018

Filed:

Apr. 24, 2012

Compound having acridan ring structure, and organic electroluminescent device

Applicants:

Norimasa Yokoyama, Tokyo, JP;

Makoto Nagaoka, Tsukuba, JP;

Naoaki Kabasawa, Tokyo, JP;

Eiji Takahashi, Tsukuba, JP;

Inventors:

Norimasa Yokoyama, Tokyo, JP;

Makoto Nagaoka, Tsukuba, JP;

Naoaki Kabasawa, Tokyo, JP;

Eiji Takahashi, Tsukuba, JP;

Assignee:

Hodogaya Chemical Co., Ltd., Tokyo, JP;

Attorneys:

Locke Lord LLP

James E. Armstrong, IV

Nicholas J. DiCeglie, Jr.

Primary Examiner:

Kuo-Liang Peng

Int. Cl.
CPC ...
H01L 51/00 (2006.01); C07D 219/02 (2006.01); C07D 221/20 (2006.01); C07D 401/04 (2006.01); C07D 409/04 (2006.01); C07D 409/10 (2006.01); C07D 409/14 (2006.01); C09K 11/06 (2006.01); H05B 33/14 (2006.01); H01L 51/50 (2006.01);
U.S. Cl.
CPC ...
H01L 51/0052 (2013.01); C07D 219/02 (2013.01); C07D 221/20 (2013.01); C07D 401/04 (2013.01); C07D 409/04 (2013.01); C07D 409/10 (2013.01); C07D 409/14 (2013.01); C09K 11/06 (2013.01); H01L 51/006 (2013.01); H01L 51/0058 (2013.01); H01L 51/0059 (2013.01); H01L 51/0061 (2013.01); H01L 51/0068 (2013.01); H01L 51/0072 (2013.01); H01L 51/0074 (2013.01); H05B 33/14 (2013.01); C09K 2211/1007 (2013.01); C09K 2211/1011 (2013.01); C09K 2211/1029 (2013.01); C09K 2211/1088 (2013.01); H01L 51/5056 (2013.01); H01L 51/5088 (2013.01);
Abstract

An organic compound having a substituted acridan ring structure with characteristics excelling in hole-injecting/transporting performance and having an electron blocking ability, a highly stable thin-film state, and excellent heat resistance is provided as a material for an organic electroluminescent device of high efficiency and high durability, and the organic electroluminescent device of high efficiency and high durability is provided using this compound. The compound is used as a constituent material of at least one organic layer in the organic electroluminescent device that includes a pair of electrodes and one or more organic layers sandwiched between the pair of electrodes.

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