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:
Dec. 23, 2025
Filed:
Jan. 20, 2022
Kunshan Go-visionox Opto-electronics Co., Ltd, Jiangsu, CN;
Guomeng Li, Jiangsu, CN;
Yuewei Zhang, Jiangsu, CN;
Xiaokang Zhou, Jiangsu, CN;
Chunliang Yao, Jiangsu, CN;
Qiqi Qin, Jiangsu, CN;
KunShan Go-Visionox Opto-Electronics Co., Ltd, Kunshan, CN;
Abstract
The organic electroluminescent device includes a first electrode, a second electrode and an organic layer located between the first electrode and the second electrode, the organic layer includes a light-emitting layer, the light-emitting layer includes a host material, a thermally activated delayed fluorescence sensitizer and a green fluorescent dye, the green fluorescent dye includes a structure as shown in formula I. A thermally activated sensitized fluorescence technique is used, and the green fluorescent dye of a specific structure in combination with the sensitizer and the host material is used, so as to achieve the effects of narrowing the spectrum of a device and improving the green color purity. The efficiency of the organic electroluminescent device is equivalent to that of a phosphorescent green light device, so that a display panel including the organic electroluminescent device has a large display color gamut area.