公开(公告)号：US20230422595A1

公开(公告)日：2023-12-28

申请号：US18326729

申请日：2023-05-31

Applicant: UNIVERSAL DISPLAY CORPORATION

Inventor： Zhiqiang JI ,  Pierre-Luc T. BOUDREAULT ,  Matthew NORTH

IPC: H10K85/30 ,  H10K50/82 ,  H10K50/81 ,  C07F15/00

CPC classification number: H10K85/342 ,  H10K50/82 ,  H10K50/81 ,  C07F15/0033

Abstract: A compound comprising a first ligand LA of




where two adjacent ones of X1 to X4 are C and are fused to a structure selected from the group consisting of




and provided. In ligand LA, each of X1 to X4 and Z to Z2 is C or N; moiety B is a fused ring system comprising two or more rings; each of Y1 and Y2 is a bridging moiety; K is selected from the group consisting of a direct bond, O, S, N(Rα), P(Rα), B(Rα), C(Rα), C(Rα)(Rβ), and Si(Rα)(Rβ); each R, R′, Rα, Rβ, RA, RB, and RC is a hydrogen or a General Substituent; and LA is coordinated to a metal M having an atomic mass of at least 40. Formulations, OLEDs, and consumer products containing the compound are also provided.