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    ORGANIC ELECTROLUMINESCENT DEVICE
    11.
    发明申请
    ORGANIC ELECTROLUMINESCENT DEVICE 有权

    公开(公告)号：US20220123218A1

    公开(公告)日：2022-04-21

    申请号：US17264462

    申请日：2019-09-29

    Applicant: LG CHEM, LTD.

    Inventor： Jae Seung HA ,  Seong So KIM ,  Minseung CHUN ,  Sang Duk SUH ,  Min Woo JUNG ,  Boon Jae JANG ,  Yongbum CHA ,  Dong Uk HEO ,  Jungha LEE

    IPC: H01L51/00

    Abstract: Provided is an organic electroluminescent device, the organic electroluminescent device comprising a cathode, an anode, and one or more organic material layers provided between the cathode and the anode, the one or more organic material layers comprising a light emitting layer, an electron transport region and a hole transport region, wherein all of the organic materials, other than a dopant, contained in the one or more organic material layers have a triplet state energy of 2.5 eV or higher, at least three types of the organic materials having a triplet state energy of 2.5 eV or higher have a triplet state energy of 2.7 eV or higher, and at least two types of the organic materials having a triplet state energy of 2.5 eV or higher include a spiro compound.

    HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE COMPRISING SAME
    12.
    发明申请
    HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE COMPRISING SAME 有权

    公开(公告)号：US20210184121A1

    公开(公告)日：2021-06-17

    申请号：US16771361

    申请日：2019-02-22

    Applicant: LG CHEM, LTD.

    Inventor： Sang Duk SUH ,  Sung Kil HONG ,  Yongbum CHA ,  Seong So KIM ,  Minseung CHUN

    IPC: H01L51/00 ,  C09K11/06 ,  C07F5/02

    Abstract: Provided is a heterocyclic compound of Chemical Formula 1: wherein: W1 and W2 are the same as or different from each other, and each independently is O or S; A1 and A2 each independently is a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group; R1 to R7 each independently is hydrogen, deuterium, a nitrile group, a halogen group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted silyl group, a substituted or unsubstituted amine group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group; and R1 to R7, A1 and A2 bond to adjacent substituents to form a substituted or unsubstituted ring, and an organic light-emitting device including the same.

    ORGANIC LIGHT EMITTING DEVICE
    18.
    发明申请
    ORGANIC LIGHT EMITTING DEVICE 有权

    公开(公告)号：US20220384729A1

    公开(公告)日：2022-12-01

    申请号：US17867906

    申请日：2022-07-19

    Applicant: LG CHEM, LTD.

    Inventor： Sang Duk SUH ,  Sung Kil HONG ,  Seong So KIM

    IPC: H01L51/00 ,  H01L51/50

    Abstract: Provided is an organic light emitting device that includes an anode, a cathode, a light emitting layer containing a compound of Chemical Formula 1: and a hole transport region that includes a compound of Chemical Formula 2: the organic light emitting device having improved driving voltage, efficiency and lifetime.

    ORGANIC LIGHT EMITTING DEVICE
    19.
    发明申请
    ORGANIC LIGHT EMITTING DEVICE 有权

    公开(公告)号：US20210265573A1

    公开(公告)日：2021-08-26

    申请号：US17252527

    申请日：2019-08-16

    Applicant: LG CHEM, LTD.

    Inventor： Minseung CHUN ,  Seong So KIM ,  Jae Seung HA

    IPC: H01L51/00

    Abstract: Provided is an organic light emitting device having low driving voltage, high luminous efficiency, and long lifetime characteristics. The organic light emitting device includes an anode, a cathode that is provided opposite to the anode, a light emitting layer that is provided between the anode and the cathode, and an electron transport layer that is provided between the light emitting layer and the cathode, where an electron mobility of a material forming the electron transport layer is 10−5 cm2/Vs or less.

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