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    ORGANIC ELECTROLUMINESCENT ELEMENT
    1.
    发明公开
    ORGANIC ELECTROLUMINESCENT ELEMENT 审中-公开

    公开(公告)号：US20230180598A1

    公开(公告)日：2023-06-08

    申请号：US17925619

    申请日：2021-06-16

    Applicant: HODOGAYA CHEMICAL CO., LTD. ,  SFC CO., LTD.

    Inventor： Yuta HIRAYAMA ,  Takeshi YAMAMOTO ,  Kouki KASE ,  Kazuyuki SURUGA ,  Shuichi HAYASHI ,  Soon-Wook CHA ,  Sung-Hoon JOO ,  Byung-Sun YANG ,  Ji-Hwan KIM

    IPC: H10K85/60 ,  C09K11/06

    CPC classification number: H10K85/633 ,  H10K85/658 ,  C09K11/06 ,  H10K50/156

    Abstract: An objective of the present invention is to provide a material for organic EL devices offering excellent hole injectability and transportability, electron blockability, stability in a thin-film state, and durability, and also to provide an organic EL device having high efficiency, low driving voltage and long lifetime by employing, in combination, the aforementioned material and various materials for organic EL devices offering excellent hole/electron injectability and transportability, electron blockability, stability in a thin-film state, and durability, in a manner that the properties of each of the materials can be brought out effectively. The present invention relates to an organic EL device containing a specific arylamine compound as a material constituting a second hole transport layer, wherein the difference between the HOMO level of the second hole transport layer and the HOMO level of a first hole transport layer is 0.15 eV or less.

    ORGANIC ELECTROLUMINESCENT ELEMENT
    5.
    发明申请
    ORGANIC ELECTROLUMINESCENT ELEMENT 有权

    公开(公告)号：US20250024698A1

    公开(公告)日：2025-01-16

    申请号：US18574791

    申请日：2022-08-01

    Applicant: HODOGAYA CHEMICAL CO., LTD. ,  SFC CO., LTD.

    Inventor： Junichi IZUMIDA ,  Sang-Won KO ,  Bong-Hyang LEE ,  Jung-Ho RYU ,  Jin-ho LEE ,  Kouki KASE ,  Shuichi HAYASHI ,  Se-Jin LEE ,  Tae-Jung YU ,  Young-Tae CHOI ,  Sung-Hoon JOO ,  Byung-Sun YANG ,  Ji-Hwan KIM ,  Bong-Ki SHIN

    IPC: H10K50/15 ,  H10K50/12 ,  H10K85/60

    Abstract: An object of the present invention is to provide a material for organic EL elements, the material being excellent in hole injecting/transporting performance, electron-blocking capability, stability in the form of a thin film, and durability. Another object of the present invention is to provide an organic EL element having high efficiency, a low driving voltage, and a long lifespan, by combining the aforementioned material with various materials for organic EL elements, the materials being excellent in hole/electron injecting/transporting performance, electron-blocking capability, stability in the form of a thin film, and durability, such that the properties of the individual materials can be effectively exhibited. Focusing on the finding that a triarylamine compound having a specific structure is excellent in hole injecting/transporting capability, stability in the form of a thin film, and durability, a specific arylamine compound was selected and used as a material for a hole-transporting layer to produce an organic EL element, and thus, the present invention has been accomplished.

    COMPOUND HAVING TRIARYLAMINE STRUCTURE AND ORGANIC ELECTROLUMINESCENCE DEVICE
    6.
    发明申请
    COMPOUND HAVING TRIARYLAMINE STRUCTURE AND ORGANIC ELECTROLUMINESCENCE DEVICE 有权

    公开(公告)号：US20210210693A1

    公开(公告)日：2021-07-08

    申请号：US17057040

    申请日：2019-06-20

    Applicant: HODOGAYA CHEMICAL CO., LTD.

    Inventor： Takuya UEHARA ,  Kouki KASE ,  Kyung-Hwa PARK ,  Yuta HIRAYAMA

    IPC: H01L51/00 ,  C07C211/54 ,  C07C211/61 ,  C07C211/58

    Abstract: An object of the present invention is to provide an organic compound that has excellent properties, with excellent hole injection and transport performance, electron blocking capability, and high stability in a thin film state, and furthermore to provide a highly efficient and highly durable organic EL device by using this compound. The present invention relates to a compound having a triarylamine structure and being represented by the structural formula (A-1) below, where A, B, and C may be the same or different, and each represent a group represented by the structural formula (B-1) below, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted fused polycyclic aromatic group, where at least one of A, B, and C is not the group represented by the structural formula (B-1) below. (For the symbols and the like in the formulae, see the descriptions in the specification.)

    ARYLAMINE COMPOUND AND ORGANIC ELECTROLUMINESCENT ELEMENT
    10.
    发明申请
    ARYLAMINE COMPOUND AND ORGANIC ELECTROLUMINESCENT ELEMENT 有权

    公开(公告)号：US20230112128A1

    公开(公告)日：2023-04-13

    申请号：US17788976

    申请日：2021-01-20

    Applicant: HODOGAYA CHEMICAL CO., LTD.

    Inventor： Kouki KASE ,  Takeshi YAMAMOTO ,  Jae-Geon LIM ,  Junichi IZUMIDA ,  Shuichi HAYASHI ,  Norimasa YOKOYAMA

    IPC: C07C211/54 ,  H01L51/00 ,  H01L51/50

    Abstract: An objective of the invention is to provide, as a material for highly efficient, highly durable organic EL devices, an organic EL device material having excellent hole injectability and transportability, electron blockability, high stability in a thin-film state, and excellent durability, and also to provide a highly efficient, highly durable organic EL device by using this compound. The present invention concerns an arylamine compound represented by general formula (1). (In the formula, Ar1, Ar2, Ar3, and Ar4 each represent a substituted or unsubstituted aromatic hydrocarbon group, etc.; L1 and L2 each represent a divalent substituted or unsubstituted aromatic hydrocarbon group, etc.; R1 to R7 each represent a hydrogen atom, a deuterium atom, etc.; and m and n may be the same or different from one another, and each represent an integer from 0 to 2, wherein L1 represents a single bond when m is 0, and L2 represents a single bond when n is 0.)

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