| abstract |
A display comprising at least one organic light emitting diode, wherein the at least one organic light emitting diode comprises an anode, a cathode, a light emitting layer between the anode and the cathode, and at least A layer comprising a compound of formula (I): wherein A1 and A2 are independently selected from halogen, CN, substituted or unsubstituted C1 to C20 alkyl or heteroalkyl, C6 to C20 aryl or C5 to C20 heteroaryl , C1 to C 20 alkoxy or C 6 to C 20 aryloxy, A 3 is selected from substituted or unsubstituted C 6 to C 40 aryl or C 5 to C 40 heteroaryl, m=0, 1 or 2, n=0, 1 or 2. |