公开(公告)号：US20240251585A1

公开(公告)日：2024-07-25

申请号：US18288147

申请日：2022-04-26

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Tetsuya MASUDA ,  Satomi TASAKI ,  Hiroaki TOYOSHIMA ,  Masato NAKAMURA ,  Kazuki NISHIMURA ,  Hiroaki ITOI ,  Emiko KAMBE

IPC: H10K50/13 ,  H10K50/15 ,  H10K59/35 ,  H10K101/60

CPC classification number: H10K50/131 ,  H10K50/156 ,  H10K59/35 ,  H10K2101/60

Abstract: An organic EL device includes: an anode; a cathode; an emitting region; and a hole transporting zone, in which the emitting region includes a first emitting layer containing a first host material and a second emitting layer containing a second host material, at least one organic layer in the hole transporting zone is a first organic layer, the first organic layer contains a hole transporting zone material, the first emitting layer is disposed close to the anode, and a triplet energy of the first host material T1(H1) and a triplet energy of the second host material T1(H2) satisfy Numerical Formula 1, and a dipole of the first host material is 0.4 D or more,


T1(H1)>T1(H2)  (Numerical Formula 1).

公开(公告)号：US20230240133A1

公开(公告)日：2023-07-27

申请号：US18009315

申请日：2021-06-18

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Masato NAKAMURA ,  Tetsuya MASUDA ,  Satomi TASAKI ,  Hiroaki TOYOSHIMA ,  Takeshi IKEDA ,  Kazuma MASE

IPC: H10K85/60 ,  H10K85/40

CPC classification number: H10K85/636 ,  H10K85/626 ,  H10K85/6572 ,  H10K85/6574 ,  H10K85/633 ,  H10K85/40 ,  H10K85/623 ,  H10K85/658 ,  H10K85/654 ,  H10K50/13

Abstract: An organic electroluminescence device includes: a first emitting layer including a first host material, a first organic material, and a first dopant material; and a second emitting layer including a second host material and a second dopant material, in which the first host material, the first organic material, and the second host material are different compounds in structure and satisfy Numerical Formula 1 and Numerical Formula 2. Numerical Formula 1: T1(H1)>T1(H3), Numerical Formula 2: T1(H2)>T1(H3) (In Numerical Formula 1 and Numerical Formula 2, T1(H1), T1(H2), T1(H3) are triplet energies of the first host material, the first organic material, and the second host material, respectively.)

公开(公告)号：US20230127629A1

公开(公告)日：2023-04-27

申请号：US17759947

申请日：2021-02-04

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Kei YOSHIDA ,  Masatoshi SAITO ,  Masato NAKAMURA ,  Tetsuya MASUDA

IPC: H01L51/00 ,  C07D403/10 ,  C09K11/06 ,  C07D403/14

Abstract: An organic electroluminescent device includes a cathode, an anode, and organic layers intervening between the cathode and the anode, where the organic layers include a light emitting layer and an electron transporting layer, where the electron transporting layer contains a compound A represented by formula (1), and the light emitting layer contains a host material B represented by formula (10):

公开(公告)号：US20220416208A1

公开(公告)日：2022-12-29

申请号：US17620171

申请日：2020-06-17

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Emiko KAMBE ,  Shota SAWANO ,  Masato NAKAMURA ,  Masatoshi SAITO

IPC: H01L51/52 ,  H01L27/32

Abstract: An organic-EL-display device includes a blue-emitting-organic-EL-device and a red-emitting-organic-EL-device as pixels, in which each of the blue-emitting-organic and the red-emitting-organic-EL-device includes a light-reflection layer, transparent electrode, hole transporting zone, emitting layer, electron transporting zone and semitransmissive electrode in this order, the blue-emitting-organic-EL-device has a blue-emitting layer containing a fluorescent-compound FLB, the red-emitting-organic-EL-device has a red-emitting layer containing a delayed fluorescent compound DFR, the hole transporting zone is provided at a constant film-thickness in a shared manner across the blue-emitting and red-emitting organic EL devices, the red-emitting-organic-EL-device has a resonator structure whose order of interference is first-order between the light reflection layer and the semitransmissive electrode, a film-thickness of the red-emitting layer is less than 50 nm, and a sum of film-thicknesses of the transparent electrode and hole transporting zone in the blue-emitting and red-emitting organic EL devices is less than 40 nm.

公开(公告)号：US20210359217A1

公开(公告)日：2021-11-18

申请号：US17273563

申请日：2019-09-02

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Kei YOSHIDA ,  Masatoshi SAITO ,  Ryoji MAEDA ,  Masato NAKAMURA ,  Tetsuya MASUDA

IPC: H01L51/00 ,  C07D403/14 ,  C07D401/14 ,  C07D409/14

Abstract: A compound of the following formula (1) and others. R1 to R24, R31 to R35, A1 and A2 are as defined in the specification, n is an integer of 0 to 3, when A1 is an (n+1)-valent residue of benzene, n is an integer of 1 or more, and when n is 0, (A2)0 is a hydrogen atom.

公开(公告)号：US20210043850A1

公开(公告)日：2021-02-11

申请号：US17077493

申请日：2020-10-22

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Ryoji MAEDA ,  Tasuku HAKETA ,  Kazuki NISHIMURA ,  Masato NAKAMURA

IPC: H01L51/00

Abstract: A mixture contains a first compound and a second compound, in which the first compound has at least one of a first cyclic structure represented by a formula (11) below and a second cyclic structure represented by a formula (12) below, and the second compound is a compound represented by a formula (21) or a compound represented by a formula (22) below, and a total mass MT of the first and second compounds and a mass M2 of the second compound in the mixture satisfy a relationship of a numerical formula (Numerical Formula 1) below,

公开(公告)号：US20250072273A1

公开(公告)日：2025-02-27

申请号：US18722535

申请日：2022-12-19

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Satomi TASAKI ,  Hiroaki TOYOSHIMA ,  Tetsuya MASUDA ,  Masato NAKAMURA ,  Hiroaki ITOI

IPC: H10K85/20 ,  C09K11/02 ,  C09K11/06 ,  H10K85/40 ,  H10K85/60 ,  H10K101/00 ,  H10K101/10 ,  H10K101/30

Abstract: An organic EL device includes an emitting region and a first anode side organic layer. The first anode side organic layer contains a first material. The emitting region includes a first emitting layer containing first and second host materials and a second emitting layer containing a third host material. Energy levels of highest occupied molecular orbitals of the first material, the first host material, and the second host material HOMO(HT1), HOMO(H1), and HOMO(H2) satisfy a relationship of a numerical formula (Numerical Formula A1) below, and triplet energies of the first host material, the second host material, and the third host material T1(H1), T1(H2), and T1(H3) satisfy relationships of numerical formulae (Numerical Formula A2 and Numerical Formula A3) below, HOMO ⁡ ( HT ⁢ 1 ) > HOMO ⁡ ( H ⁢ 2 ) > HOMO ⁡ ( H ⁢ 1 ) ( Numerical ⁢ Formula ⁢ A1 ) T 1 ( H ⁢ 1 ) > T 1 ( H ⁢ 3 ) ( Numerical ⁢ Formula ⁢ A2 ) T 1 ( H ⁢ 2 ) > T 1 ( H ⁢ 3 ) . ( Numerical ⁢ Formula ⁢ A3 )

公开(公告)号：US20240423010A1

公开(公告)日：2024-12-19

申请号：US18697067

申请日：2022-09-30

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Masato NAKAMURA ,  Satomi TASAKI ,  Tasuku HAKETA ,  Emiko KAMBE ,  Keitaro YAMADA ,  Tetsuya MASUDA ,  Yusuke TAKAHASHI ,  Hiroaki TOYOSHIMA ,  Takeshi IKEDA ,  Kazuki NISHIMURA

IPC: H10K50/15 ,  H10K50/11 ,  H10K50/16 ,  H10K59/90 ,  H10K85/60

Abstract: An organic EL device includes an emitting region provided between a cathode and an anode, a first anode-side-organic layer, a second anode-side-organic layer, and a third anode-side-organic layer, a first emitting layer of the emitting region contains a first host material, a first additional host material, and a first luminescent compound, the first anode-side-organic layer is in direct contact with the second one, the second anode-side-organic layer is in direct contact with the third one, the third anode-side-organic layer has a film thickness of 20 nm or more, the second anode-side-organic layer contains at least one compound different from a compound contained in the third one, the first emitting layer is a fluorescent emitting layer, and a refractive index NM2 of a constituent material contained in the second anode-side-organic layer and a refractive index NM3 in the third one satisfy a relationship below, NM 2 > NM 3 . ( Numerical ⁢ Formula ⁢ NM )

公开(公告)号：US20240130223A1

公开(公告)日：2024-04-18

申请号：US18259179

申请日：2021-12-24

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Hiroaki TOYOSHIMA ,  Kazuki NISHIMURA ,  Emiko KAMBE ,  Masato NAKAMURA ,  Tetsuya MASUDA ,  Yusuke TAKAHASHI

IPC: H10K85/60

CPC classification number: H10K85/633 ,  H10K85/60 ,  H10K50/11

Abstract: An organic EL device includes: an emitting layer including a first emitting layer and a second emitting layer; and a hole transporting zone including at least two organic compound layers, in which a first organic compound layer of the hole transporting zone includes a first organic material and a second organic material that are mutually different, a content of the first organic material in the first organic compound layer is less than 10 mass %, the first emitting layer includes a first host material and a first emitting compound, the second emitting layer includes a second host material and a second emitting compound, and 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,


T1(H1)>T1(H2)  (Numerical Formula 1).

公开(公告)号：US20230124891A1

公开(公告)日：2023-04-20

申请号：US17759980

申请日：2021-02-04

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Kei YOSHIDA ,  Masatoshi SAITO ,  Masato NAKAMURA ,  Tetsuya MASUDA

IPC: H01L51/50 ,  C07D403/10 ,  H01L51/00 ,  C07D403/14

Abstract: A compound represented by the following formula (1) and having a molecular weight of 650 or more: wherein Cz, n, Y1, Y2, Ar1, Ar2, L1, L2, L3, L4, R1, R2, R3, R4, R5, and R6 are as defined in the description, and an organic electroluminescent device which contains the compound.