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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 11158814 B1

PDFFull Text
Date of Patent:
Oct. 26, 2021

Filed:

Jan. 30, 2019

9,10-dihydro-acridine derivative, and preparation method and use thereof

Applicant:

Ningbo Lumilan Advanced Materials., Ltd., Ningbo, CN;

Inventors:

Hua Sun, Ningbo, CN;

Wenming Zhu, Ningbo, CN;

Kunshan Xie, Ningbo, CN;

Zhi Kuan Chen, Ningbo, CN;

Assignee:

NINGBO LUMILAN ADVANCED MATERIALS CO., LTD, Ningbo, CN;

Attorneys:

Miles & Stockbridge P.C.

Ajay Jagtiani

Primary Examiner:

John S Kenyon

Int. Cl.
CPC ...
C07D 403/04 (2006.01); H01L 51/00 (2006.01); C07D 219/02 (2006.01); C07D 219/14 (2006.01); C07D 401/04 (2006.01); C07D 401/14 (2006.01); C07D 405/10 (2006.01); C07D 405/14 (2006.01); C07D 409/10 (2006.01); C07D 409/14 (2006.01); H01L 51/50 (2006.01);
U.S. Cl.
CPC ...
H01L 51/0072 (2013.01); C07D 219/02 (2013.01); C07D 219/14 (2013.01); C07D 401/04 (2013.01); C07D 401/14 (2013.01); C07D 405/10 (2013.01); C07D 405/14 (2013.01); C07D 409/10 (2013.01); C07D 409/14 (2013.01); H01L 51/006 (2013.01); H01L 51/0061 (2013.01); H01L 51/0073 (2013.01); H01L 51/0074 (2013.01); H01L 51/0085 (2013.01); H01L 51/5016 (2013.01); H01L 51/5056 (2013.01); H01L 51/5096 (2013.01);
Abstract

The present invention discloses a 9,10-dihydro-acridine derivative having a structure of Formula (I). The compound has a suitable HOMO energy level that matches that of an anode and light emitting layer when used as a material of a hole transport layer, thus reducing the potential barrier needed to overcome when holes are transported to the light emitting layer, and reducing the operating voltage of the device. Moreover, the 9,10-dihydro-acridine derivative has high triplet energy level and LUMO level, to avoid the returning of energy from the light emitting layer, retain the electrons in the light emitting layer, increase the probability of recombination of electrons and holes in the light emitting layer, and enhance the luminescence efficiency of the device. The compound of Formula (I) has high glass transition temperature, good film forming performance, and high thermal stability. The present invention further discloses an organic light-emitting device having at least one functional layer containing the 9,10-dihydro-acridine derivative. When the compound is used as a material of the hole transport layer, a light-emitting device of high luminescence efficiency and low driving voltage is obtained.

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