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:
May. 10, 2022
Filed:
Feb. 18, 2019
Applicant:
Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Hubei, CN;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K 11/06 (2006.01); H01L 51/00 (2006.01); C07D 471/14 (2006.01); H01L 51/50 (2006.01);
U.S. Cl.
CPC ...
C09K 11/06 (2013.01); C07D 471/14 (2013.01); H01L 51/0072 (2013.01); C09K 2211/1062 (2013.01); H01L 51/5016 (2013.01);
Abstract
A red light thermally activated delayed fluorescence material, a method for preparing the same, and an organic light emitting diode (OLED) device are provided. The OLED device has a luminescent material layer containing the red light thermally activated delayed fluorescence material. The red light thermally activated delayed fluorescence material has a specific molecular structure. The OLED device has a maximum brightness ranging from 1300 to 1800 cd/mand a maximum current efficiency ranging from 25 to 35 cd/A.