Organische Lichtemittierende Vorrichtung

Details

Veröffentlichungs-Nr.

EP4199679

Aktenzeichen

EP22211591

Anmeldetag

6. Dezember 2022

Veröffentlichung

23. Oktober 2024

Erteilung

23. Oktober 2024

Rechtsraum

EP

IPC

H10K50/12H10K50/13

Abstract

An organic light-emitting device (26) includes, in sequence, an anode (21), first and second light-emitting layers (43, 44), and a cathode (23), in which the first light-emitting layer (43) contains a first host and a first guest that emits fluorescence, the second light-emitting layer (44) contains a second host and a second guest that emits fluorescence, the first and second light-emitting layers (43, 44) each contain no amine compound, and each of the first and second hosts is a hydrocarbon compound whose carbon atoms are SP<2> carbon atoms only and has any of structures represented by formulae [1] to [6]: <img class="EMIRef" id="b14cc798-5ebf-4340-bb34-3c24e1b79bc3-ia01" /> <img class="EMIRef" id="b14cc798-5ebf-4340-bb34-3c24e1b79bc3-ia02" /> where A to C are each an anthracene residue, a pyrene residue, a benzanthracene residue, a benzpyrene residue, a phenanthrene residue, or a fluoranthene residue, and each of A to C optionally further contains a phenyl group, a biphenyl group, a terphenyl group, or a naphthyl group.

Anmelder

Firma

CANON KABUSHIKI KAISHA

Land

🇯🇵 Japan

Fachgebiete