申请人:UNIVERSAL DISPLAY CORPORATION
                            
                            
                                公开号:US20220127291A1
                            
                            
                                公开(公告)日:2022-04-28
                            
                            A compound having a structure of Formula I
In Formula I, M is Pd or Pt; each of X
1
to X
12
is independently C or N; ring A is a 5-membered or 6-membered ring; K
1
and K
2
are selected from a direct bond, O, S, and NR; L
1
is an organic linker; Y
1
is selected from O, S, BR, PR, Se and NR
Y
; each R, R′, R″, R
L
, R
Y
, R
A
, R
B
, R
C
, and R
D
is hydrogen or a substituent; and any two substituents can be joined or fused to form a ring. Further provided are OLEDs and related consumer products that utilize these compounds.