公开(公告)号：US20240244856A1

公开(公告)日：2024-07-18

申请号：US18281298

申请日：2022-03-09

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Kengo KISHINO ,  Satomi TASAKI ,  Kazuki NISHIMURA ,  Yoshiaki TAKAHASHI

IPC: H10K50/11 ,  C09K11/06 ,  H10K85/30 ,  H10K85/60 ,  H10K101/00 ,  H10K101/10 ,  H10K101/30

CPC classification number: H10K50/11 ,  C09K11/06 ,  H10K85/342 ,  H10K85/626 ,  H10K85/633 ,  H10K85/6574 ,  H10K85/658 ,  C09K2211/185 ,  H10K2101/10 ,  H10K2101/30 ,  H10K2101/90

Abstract: An organic EL device includes an anode, a cathode, and an emitting layer disposed between the anode and the cathode, in which the emitting layer includes a first emitting layer and a second emitting layer, the first emitting layer contains a first host material and a first luminescent compound, the second emitting layer contains a second host material and a second luminescent compound, the first host material and the second host material are mutually different, the first luminescent compound and the second luminescent compound are mutually the same or different, a triplet energy of the first host material T1(H1) and a triplet energy of the second host material T1(H2) satisfy a relationship of Numerical Formula 1, and a diffusion coefficient D1 of the triplet energy of the first host material T1(H1) calculated according to a diffusion equation is 3.0×10−9 (cm2/s) or more,









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1

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H
⁢
1

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T
1

(

H
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2

)

.





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Numerical
⁢

Formula
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1

)

公开(公告)号：US20240215440A1

公开(公告)日：2024-06-27

申请号：US18282302

申请日：2022-03-14

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Takushi SHIOMI ,  Hisato MATSUMOTO ,  Yukitoshi JINDE ,  Kengo KISHINO ,  Kazuki TERADA ,  Keiichi YASUKAWA ,  Toshinari OGIWARA

IPC: H10K85/60 ,  C07D495/04 ,  C07F5/02 ,  C09K11/06 ,  H10K50/11

CPC classification number: H10K85/657 ,  C07D495/04 ,  C07F5/027 ,  C09K11/06 ,  H10K85/658 ,  C09K2211/1018 ,  H10K50/11

Abstract: An organic electroluminescence device includes: an anode; a cathode; and an emitting layer between the anode and the cathode, in which the emitting layer contains a delayed fluorescent compound M2 represented by a formula (2) below and a compound M3 represented by a formula (3) below, and a singlet energy S1 (M2) of the compound M2 and a singlet energy S1 (M3) of the compound M3 satisfy a relationship of a numerical formula (Numerical Formula 1) below,

公开(公告)号：US20230006160A1

公开(公告)日：2023-01-05

申请号：US17774047

申请日：2020-11-06

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Satomi TASAKI ,  Tetsuya MASUDA ,  Kengo KISHINO ,  Kazuki NISHIMURA ,  Yuki NAKANO ,  Yuichiro KAWAMURA

IPC: H01L51/50 ,  H01L51/00

Abstract: An organic EL display device includes an anode and a cathode and includes a blue organic EL device, a green organic EL device, and a red organic EL device. The blue organic EL device includes a first emitting layer. The green organic EL device includes a second emitting layer. The red organic EL device includes a third emitting layer. The organic EL devices include a fourth emitting layer as a common layer. The fourth emitting layer is in direct contact with each of the emitting layers). The first emitting layer contains a compound represented by a formula (1) and having at least one group represented by a formula (11). The fourth emitting layer contains a second compound represented by a formula (2).

公开(公告)号：US20240032416A1

公开(公告)日：2024-01-25

申请号：US18039018

申请日：2021-11-26

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Tasuku HAKETA ,  Kengo KISHINO ,  Shota TANAKA ,  Yusuke TAKAHASHI ,  Takuto FUKAMI ,  Tsukasa SAWATO

IPC: H10K85/60 ,  C07D307/91 ,  C09K11/02 ,  C09K11/06

CPC classification number: H10K85/636 ,  C07D307/91 ,  H10K85/633 ,  C09K11/02 ,  C09K11/06 ,  H10K50/156

Abstract: Provided are a compound that further improves the performance of an organic EL device, an organic electroluminescent device having further improved device performance, and an electronic device including the organic electroluminescent device. A compound represented by the following formula (1):




wherein in the formula (1) and formulas (1-a) to (1-d), N*, *p, *q, *r, *s, Ar, **, and X are as defined in the description; an organic electroluminescent device including the compound; and an electronic device including the organic electroluminescent device.

公开(公告)号：US20220223798A1

公开(公告)日：2022-07-14

申请号：US17644636

申请日：2021-12-16

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Takushi SHIOMI ,  Hisato MATSUMOTO ,  Yukitoshi JINDE ,  Kengo KISHINO ,  Kazuki TERADA ,  Keiichi YASUKAWA ,  Toshinari OGIWARA

IPC: H01L51/00 ,  C07D495/04 ,  C09K11/06 ,  C07F5/02

Abstract: An organic electroluminescence device includes an anode, a cathode, and an emitting layer provided between the anode and the cathode, in which the emitting layer contains a delayed fluorescent compound M2 represented by a formula (2) and a compound M3 represented by a formula (3), and a singlet energy Si(M2) of the compound M2 and a singlet energy Si(M3) of the compound M3 satisfy a relationship of a numerical formula (Numerical Formula 1). In the formula (3), Y31 to Y36 are each independently CR3 or a nitrogen atom, and two or more of Y31 to Y36 are each a nitrogen atom,