Organic light-emitting device
    46.
    发明授权

    公开(公告)号:US11316124B2

    公开(公告)日:2022-04-26

    申请号:US16542081

    申请日:2019-08-15

    Abstract: An organic light-emitting device and a flat panel display device, the organic-light emitting device including an anode; a cathode; and an organic layer therebetween including an emission layer, a hole transport region between the anode and the emission layer, the hole transport region including at least one of a hole injection layer, a hole transport layer, and an electron blocking layer, an electron transport region between the emission layer and the cathode, the electron transport region including at least one of a hole blocking layer, an electron transport layer, and an electron injection layer, and a buffer layer between the emission layer and the electron transport region, wherein the buffer layer includes a biscarbazole-based derivative and triphenylene-based derivative, and a triplet energy (ET1) of the biscarbazole-based derivative or the triphenylene-based derivative and a triplet energy (ET2) of a dopant of the emission layer satisfy the following relationship: ET1>ET2.

    Organic light-emitting device
    47.
    发明授权

    公开(公告)号:US10930853B2

    公开(公告)日:2021-02-23

    申请号:US15182298

    申请日:2016-06-14

    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; a hole transport region between the first electrode and the emission layer; and an electron transport region between the emission layer and the second electrode, wherein the hole transport region includes a first compound, the emission layer includes a second compound as a fluorescent host and a third compound as a fluorescent dopant, and the electron transport region includes a fourth compound and a fifth compound including, as a ring-forming moiety, a nitrogen-containing heterocyclic group including *═N—*′, wherein the first compound, the fourth compound, and at least one selected from the second compound and the third compound each independently include at least one group selected from groups represented by Formulae A to D:

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