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:
Sep. 13, 2022
Filed:
Nov. 28, 2017
Kyushu University, National University Corporation, Fukuoka, JP;
Hamamatsu Photonics K.k., Hamamatsu, JP;
Chihaya Adachi, Fukuoka, JP;
Hajime Nakanotani, Fukuoka, JP;
Takahiko Yamanaka, Hamamatsu, JP;
Shigeo Hara, Hamamatsu, JP;
Toru Hirohata, Hamamatsu, JP;
Other;
Abstract
An organic electro-luminescent element having a luminescence peak in a near-infrared range, comprising a positive electrode, a negative electrode, and at least one organic layer including a luminescent layer located between the positive electrode and the negative electrode, wherein the luminescent layer comprises a host material, a delayed fluorescent material and a luminescent material, wherein each of the delayed fluorescent material and the luminescent material have a structure with two or three benzene rings bonded to an N atom.