公开(公告)号：US12289995B2

公开(公告)日：2025-04-29

申请号：US17236029

申请日：2021-04-21

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Hiromi Nakano ,  Hisato Matsumoto ,  Yuichi Nishimae

IPC: H01L51/00 ,  C07F5/02 ,  H10K85/60 ,  H10K50/11

Abstract: A compound is represented by a formula (1). In the formula (1), at least one combination of adjacent two or more of R1 to R17 are mutually bonded to form a ring represented by a formula (2), in which RX1 to RX4 and R1 to R17 are each independently a hydrogen atom, a substituent or the like,

公开(公告)号：US12127478B2

公开(公告)日：2024-10-22

申请号：US17345450

申请日：2021-06-11

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Takushi Shiomi ,  Hisato Matsumoto ,  Hiromi Nakano ,  Toshinari Ogiwara

IPC: H01L51/50 ,  H10K71/16 ,  H10K85/40 ,  H10K85/60 ,  H10K50/11 ,  H10K101/00 ,  H10K101/10

CPC classification number: H10K85/6572 ,  H10K71/164 ,  H10K85/40 ,  H10K85/631 ,  H10K85/6565 ,  H10K85/6574 ,  H10K85/6576 ,  H10K50/11 ,  H10K2101/10 ,  H10K2101/90

Abstract: An organic EL device includes an anode, a cathode, and an emitting layer. The emitting layer contains a first compound represented by a formula (1X) or a formula (1Y), a second compound, and a third compound that exhibits delayed fluorescence. The second compound is different in structure from the first compound. The second compound is different in structure from the third compound. Singlet energies S1 of the first, second, third compounds satisfy Numerical Formula 1 and Numerical Formula 2 below,




A is, for example, a group represented by a formula (a1); Y11˜Y13 are, for example, each independently a nitrogen atom or CRy; Ry is, for example, a substituent or a group represented by a formula (1Z); R1X to R3X are, for example, each independently a substituent or a group represented by a formula (1Z).