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. 10, 2019
Filed:
Sep. 01, 2015
Guangdong Aglaia Optoelectronic Materials Co., Ltd., Foshan, Guangdong, CN;
Beijing Aglaia Technology Development Co., Ltd., Beijing, CN;
GUANGDONG AGLAIA OPTOELECTRONIC MATERIALS CO., LTD., Foshan, CN;
BEIJING AGLAIA TECHNOLOGY DEVELOPMENT CO., LTD., Beijing, CN;
Abstract
This invention relates to an OLED, comprising an anode, a cathode, and an organic layer, the organic layer at least contains one or more layers containing light emitting layer from the hole injection layer, hole transport layer, electron injection layer, electron transport layer, light emitting layer; the light emitting layer is a host guest doping system composed of host materials and guest materials. The light-emitting zone of the light emitting layer is blue 440-490 nm, and the host material or guest material has a structure with the formula (I). The OLED has the advantages of excellent light emitting efficiency, excellent color purity and long lifetime.