公开(公告)号：US20230263001A1

公开(公告)日：2023-08-17

申请号：US18009235

申请日：2021-06-18

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Hiroaki TOYOSHIMA ,  Kazuki NISHIMURA ,  Satomi TASAKI

IPC: H10K50/155 ,  H10K85/60 ,  H10K85/40

CPC classification number: H10K50/155 ,  H10K85/631 ,  H10K85/6572 ,  H10K85/6574 ,  H10K85/633 ,  H10K85/622 ,  H10K85/636 ,  H10K85/40 ,  H10K2101/10

Abstract: An organic EL device includes: an anode; a cathode; a first emitting layer containing a first host material; a second emitting layer containing a second host material; and a hole transporting zone, in which all of one or more organic layers in the hole transporting zone contain a common hole transporting zone material, 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 a numerical formula (Numerical Formula 1) below, and an absolute value of a difference between an energy level of the hole transporting zone material HOMO(HT) and an energy level of the first host material HOMO(H1) satisfies a relationship of a numerical formula (Numerical Formula 2) below,


T1(H1)>T1(H2)  (Numerical Formula 1)



|HOMO(HT)−HOMO(H1)|

公开(公告)号：US20230171977A1

公开(公告)日：2023-06-01

申请号：US17918267

申请日：2021-04-13

Applicant: IDEMITSU KOSAN CO.,LTD.

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

IPC: H10K50/12

CPC classification number: H10K50/12 ,  H10K2101/00

Abstract: An organic EL device includes a first emitting layer and a second emitting layer. The first emitting layer contains a first host material and a first dopant material. The second emitting layer contains a second host material and a second dopant material. The first host material and the second host material are different from each other. The first dopant material is a compound having a maximum peak wavelength of 500 nm or less. The second dopant material is a compound having a maximum peak wavelength of 500 nm or less. The first dopant material and the second dopant material are different from each other. A triplet energy T1(H1) of the first host material and a triplet energy T1(H2) of the second host material satisfy a relationship of a numerical formula (Numerical Formula 1),


T1(H1)>T1(H2)   (Numerical Formula 1).

公开(公告)号：US20220411437A1

公开(公告)日：2022-12-29

申请号：US17282347

申请日：2019-10-09

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Yuki NAKANO ,  Taro YAMAKI ,  Satomi TASAKI ,  Tomoki KATO

IPC: C07D493/00 ,  H01L51/00

Abstract: A compound having structures represented by the following formulas (1) or (2): wherein in the formulas (1) and (2), at least one of R1 to R8 is a deuterium atom.

公开(公告)号：US20220380278A1

公开(公告)日：2022-12-01

申请号：US17642661

申请日：2020-09-11

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Satomi TASAKI ,  Kazuki NISHIMURA ,  Yuki NAKANO

IPC: C07C15/38 ,  C07D307/91 ,  C07C15/28 ,  C07C15/30 ,  C07D333/76 ,  C07D311/82 ,  C07F7/08 ,  C07D405/10 ,  C07D407/10 ,  C07C13/72 ,  C07C211/54 ,  C07C255/51 ,  C07D487/06 ,  C07D491/22 ,  C07D491/06 ,  C07D487/16 ,  C07D495/22 ,  C07D519/00 ,  C07F5/02 ,  C07D493/04 ,  C07D495/04 ,  H01L51/00

Abstract: An organic electroluminescence device includes an anode, a cathode, a first emitting layer, and a second emitting layer provided between the first emitting layer and the cathode, in which the first emitting layer includes, as a first host material, a first compound that includes at least one group represented by a formula (11) below, the first compound being represented by a formula (1) below, the second emitting layer includes a second compound represented by a formula (2) below as a second host material, and the first emitting layer is in direct contact with the second emitting layer. L101 is a single bond or a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms. Ar101 is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms. mx is 0, 1, 2, 3, 4, or 5.

公开(公告)号：US20220376191A1

公开(公告)日：2022-11-24

申请号：US17642666

申请日：2020-09-11

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Satomi TASAKI ,  Kazuki NISHIMURA ,  Yuki NAKANO

IPC: H01L51/00

Abstract: An organic electroluminescence device includes: an anode; a cathode; a first emitting layer; and a second emitting layer provided between the first emitting layer and the cathode, in which the first emitting layer contains, as a first host material, a first compound that has at least one group represented by a formula (11A) below and that is represented by a formula (1) below, the second emitting layer contains, as a second host material, a second compound represented by a formula (2) below, and the first emitting layer and the second emitting layer are in direct contact with each other

公开(公告)号：US20220371974A1

公开(公告)日：2022-11-24

申请号：US17642222

申请日：2020-09-11

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Kazuki NISHIMURA ,  Satomi TASAKI

IPC: C07C15/38 ,  C07D307/91 ,  C07C15/28 ,  C07C15/30 ,  C07D333/76 ,  C07D311/82 ,  C07D407/10 ,  C07F7/08 ,  C07D405/10 ,  C07C211/54 ,  C07D487/06 ,  C07D491/22 ,  C07D491/16 ,  C07D487/16 ,  C07D495/22 ,  C07D487/22 ,  C07D519/00 ,  C07F5/02 ,  C07D493/04 ,  C07D495/04 ,  C07D405/12 ,  C07D403/14 ,  C07D235/08 ,  C07D251/24 ,  C07F1/02 ,  H01L51/00

Abstract: An organic electroluminescence device includes: an anode; a cathode; a first emitting layer; and a second emitting layer provided between the first emitting layer and the cathode, in which the first emitting layer contains, as a first host material, a first compound that has at least one group represented by a formula (11) below and that is represented by a formula (1) below, the second emitting layer contains, as a second host material, a second compound represented by one of formulae (2-1A) to (2-4A) below, and the first emitting layer and the second emitting layer are in direct contact with each other.

公开(公告)号：US20220310930A1

公开(公告)日：2022-09-29

申请号：US17746587

申请日：2022-05-17

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Satomi TASAKI ,  Kazuki NISHIMURA ,  Tasuku HAKETA ,  Ryoji MAEDA ,  Yuki NAKANO ,  Hiroaki TOYOSHIMA

IPC: H01L51/00

Abstract: An organic electroluminescence device includes: a first emitting layer disposed between an anode and a cathode; a second emitting layer disposed between the first emitting layer and the cathode; and an electron blocking layer disposed between the first emitting layer and the anode, in which the first emitting layer and the second emitting layer are in direct contact with each other; the first emitting layer and the electron blocking layer are in direct contact with each other; the first emitting layer includes a first compound represented by a formula (1) below; the first compound includes at least one group represented by a formula (11) below; the second emitting layer includes a second compound represented by a formula (2); the electron blocking layer includes a third compound; and the third compound satisfies a formula (M1) below.

公开(公告)号：US20220289704A1

公开(公告)日：2022-09-15

申请号：US17632913

申请日：2020-08-07

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Hiroaki ITOI ,  Yuki NAKANO ,  Satomi TASAKI ,  Taro YAMAKI

IPC: C07D311/82 ,  C07D407/10 ,  C07D405/10 ,  C07F7/08 ,  C07D335/12 ,  C07D409/10 ,  C09K11/06 ,  C07C15/62 ,  C07D209/86 ,  C07D213/16 ,  C07F9/28 ,  C07D235/08 ,  C07D277/66 ,  C07D279/22 ,  C07D223/24 ,  C07C49/76 ,  C07C211/54 ,  C07D333/54 ,  C07D215/06 ,  C07C321/26 ,  C07D487/22 ,  C07F5/02 ,  C07D405/14 ,  C07C13/62 ,  C07D409/04 ,  C07C255/50 ,  C07D493/04 ,  H01L51/00

Abstract: An organic electroluminescence device comprising: a cathode, an anode, and an organic layer disposed between the cathode and the anode, wherein the organic layer comprises a compound represented by the following formula (1), and a compound A having a Stokes shift of 20 nm or smaller and an emission peak wavelength of 440 nm to 465 nm (at least one of Ar1 and Ar2 is a monovalent group having a structure represented by the following formula (2)).

公开(公告)号：US20220173335A1

公开(公告)日：2022-06-02

申请号：US17602270

申请日：2020-04-08

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Hiroaki ITOI ,  Yuki NAKANO ,  Satomi TASAKI ,  Taro YAMAKI ,  Tetsuya MASUDA

IPC: H01L51/00

Abstract: An organic electroluminescence device including a cathode, an anode, and an emitting layer disposed between the cathode and the anode, wherein the emitting layer contains one or both of the compound represented by the following formula (1A) and the compound represented by the following formula (1B) and a compound represented by any one of the specific formulas (11), (21), (31), (41), (51), (61), (71), and (81).

公开(公告)号：US20220069232A1

公开(公告)日：2022-03-03

申请号：US17291200

申请日：2019-11-07

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Tasuku HAKETA ,  Masatoshi SAITO ,  Yuki NAKANO ,  Satomi TASAKI ,  Kazuki NISHIMURA

IPC: H01L51/00

Abstract: An organic electroluminescence device comprising: a cathode, an anode, and an organic layer disposed between the cathode and the anode, wherein the organic layer comprises an emitting layer and an electron barrier layer, the electron barrier layer is disposed between the anode and the emitting layer and is directly adjacent to the emitting layer, the emitting layer comprises a first compound represented by any one of the specific formulas (21), (41), and (51), and the electron barrier layer comprises a second compound which satisfies the following expression (M1): Ip(HT)≥5.67 eV  (M1) wherein in the expression (M1), Ip(HT) is the ionization potential of the second compound.