Light-emitting device having low driving voltage, high luminescence efficiency, and long life span, and electronic apparatus including same

    公开(公告)号:US12082434B2

    公开(公告)日:2024-09-03

    申请号:US17361873

    申请日:2021-06-29

    CPC classification number: H10K50/818

    Abstract: A light-emitting device including: first and second electrodes facing each other; an emission layer located therebetween; and a charge transport region located between the emission layer and the first electrode. Light emitted from the emission layer passes to the outside through the second electrode, the first electrode is a reflective electrode, the first electrode includes a transparent layer and a reflective layer, a distance between i) an interface between the transparent layer of the first electrode and the charge transport region and ii) an interface between the emission layer and the charge transport region is a first resonance distance of light emitted from the emission layer, and a distance between a) an interface between the reflective layer of the first electrode and the transparent layer of the first electrode and b) an interface between the emission layer and the charge transport region is a second resonance distance of light emitted from the emission layer.

    Organic light-emitting device
    40.
    发明授权

    公开(公告)号:US10862043B2

    公开(公告)日:2020-12-08

    申请号:US15140417

    申请日:2016-04-27

    Abstract: An organic light-emitting device includes a first electrode; a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode; and a hole transport region between the first electrode and the emission layer, wherein the hole transport region includes a hole transport layer, and a hole auxiliary layer between the hole transport layer and the emission layer. The hole auxiliary layer includes a first compound represented by Formula 1, and the hole transport layer includes a second compound represented by Formula 2:

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