Publication number: 20220085302
Abstract: A compound having a ligand LA of Formula I, is disclosed. In Formula I, ring B is a 5-membered or 6-membered ring; K is a direct bond, O, or S; X is O, S, Se, NR, CRR?, SiRR?, or GeRR?; R1 and R2 are each independently selected from a variety of substituents; each R, R?, RA, and RB is independently hydrogen or a substituent; LA is coordinated to a metal M selected from Os, Ir, Pd, Pt, Cu, Ag, or Au by the dashed lines; any two adjacent of R1, R2, R, R?, RA, or RB can be joined or fused to form a ring, with the proviso that when ring B is a 6-membered ring, two RB substituents are not joined to form a fused 6-membered aromatic ring. Organic light emitting devices, consumer products, formulations, and chemical structures containing the compounds are also disclosed.
Type:
Application
Filed:
August 17, 2021
Publication date:
March 17, 2022
Applicant:
Universal Display Corporation
Inventors:
Zhiqiang JI, Pierre-Luc T. BOUDREAULT, Tongxiang LU, Wei-Chun SHIH, Bert ALLEYNE, Hsiao-Fan CHEN
Patent number: 11081658
Abstract: A novel compound is disclosed which includes a ligand LA of Formula I, Formula II, Formula III, or Formula IV: wherein: ring B is independently a 5-membered or 6-membered carbocyclic or heterocyclic ring; X1 to X4 are each independently selected from the group consisting of C, N, and CR; at least one pair of adjacent X1 to X4 are each C and fused to a structure of Formula V where indicated by “”; X5 to X12 are each independently C or N; the maximum number of N within a ring is two; Z and Y are each independently selected from the group consisting of O, S, Se, NR?, CR?R?, SiR?R?, and GeR?R?; RB and RC each independently represents zero, mono, or up to a maximum allowed substitutions to its associated ring; each of RB, RC, R, R?, and R? is independently hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl,
Type:
Grant
Filed:
March 24, 2020
Date of Patent:
August 3, 2021
Assignee:
UNIVERSAL DISPLAY CORPORATION
Inventors:
Pierre-Luc T. Boudreault, Bert Alleyne, Zhiqiang Ji