ORGANIC LIGHT-EMITTING DEVICE
    9.
    发明申请

    公开(公告)号:US20210305516A1

    公开(公告)日:2021-09-30

    申请号:US17251344

    申请日:2019-09-03

    申请人: LG CHEM, LTD.

    摘要: Provided is an organic light emitting device including a first electrode; a second electrode opposite to the first electrode; and a first organic material layer and a second organic material layer provided between the first electrode and the second electrode, wherein the first organic material layer includes a compound of Chemical Formula 1: wherein: at least one of Xa to Xc is N, and the rest are CR; and Ar2 to Ar4 are each independently a substituted or unsubstituted aryl or heterocyclic group, and the second organic material layer includes a compound of (HAr)a-[L1-Ar1-L2-(CN)b]c  Chemical Formula 2: wherein: HAr is a substituted or unsubstituted heterocyclic group including at least one or more Ns; L1 and L2 are each independently a direct bond or a substituted or unsubstituted arylene or divalent heterocyclic group; and Ar1 is a direct bond, —O—, or a substituted or unsubstituted arylene or divalent heterocyclic group.

    ORGANIC LIGHT EMITTING DIODE
    10.
    发明申请

    公开(公告)号:US20210210694A1

    公开(公告)日:2021-07-08

    申请号:US17058295

    申请日:2019-09-20

    申请人: LG CHEM, LTD.

    IPC分类号: H01L51/00

    摘要: Provided is an organic light emitting device comprising: an anode; a cathode; a light emitting layer provided between the anode and the cathode; and an organic material layer provided between the cathode and the light emitting layer, wherein the light emitting layer comprises a compound of Chemical Formula 1, and the organic material layer provided between the cathode and the light emitting layer contains a compound of Chemical Formula 2.