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:
Jan. 14, 2025
Filed:
Apr. 24, 2020
Semiconductor Energy Laboratory Co., Ltd., Kanagawa-ken, JP;
Abstract
A novel light-emitting device is provided. A light-emitting device with a long lifetime is provided. The light-emitting device includes an anode, a cathode, and an EL layer. The light-emitting layer is positioned between the anode and the cathode. The EL layer includes a light-emitting layer and an electron-transport layer. The electron-transport layer is positioned between the light-emitting layer and the cathode. The light-emitting layer contains a first organic compound, a second organic compound, and an emission center substance. The combination of the first organic compound and the second organic compound can form an exciplex. The electron-transport layer contains an organic compound represented by General Formula (G1) below. (Note that in General Formula (G1) below, Ar1 represents a benzoquinolyl group or a benzoisoquinolyl group, and Ar2 represents a triphenylenylnaphthylene group or a naphthylenyltriphenylene-diyl group.)