Patent ID: 11950500
Assignee: LG DISPLAY CO., LTD.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 18:
19. An organic light emitting device, comprising:
a substrate; and
an organic light emitting diode including a first electrode, a second electrode facing the first electrode and a first emitting unit including a first emitting material layer disposed between the first and second electrodes and a first electron blocking layer disposed between the first electrode and the first emitting material layer, and disposed over the substrate,
wherein the first emitting material layer includes a host having the following structure of Chemical Formula 1 and a dopant having the following structure of Chemical Formula 3, and the first electron blocking layer includes an amine-based compound having the following structure of Chemical Formula 5:, wherein each of R1 and R2 is independently a C6˜C30 aryl group or a C5˜C30 hetero aryl group; each of L1 and L2 is independently a C6˜C30 arylene group; and each of a and b is an integer of 0 (zero) or 1;, wherein each of R11 and R12 is independently a C1˜C20 alkyl group, a C6˜C30 aryl group, a C5˜C30 hetero aryl group or a C6˜C30 aryl amino group, or two adjacent groups among R11 or two adjacent groups among R12 form a fused aromatic or hetero aromatic ring; each of c and d is independently an integer of 0 (zero) to 4; R13 is a C1˜C10 alkyl group, a C6˜C30 aryl group, a C5˜C30 hetero aryl group or a C5˜C30 aromatic amino group; e is an integer of 0 (zero) to 3; each of X1 and X2 is independently oxygen (O) or NR14, wherein R14 is a C6˜C30 aryl group;, wherein each of R21 to R24 is independently a monocyclic aryl group or a polycyclic aryl group, wherein least one of R21 to R24 is a polycyclic aryl group,
with the proviso that the compound of Chemical Formula 1 is not the following compound:, , and
with the proviso that the compound of Chemical Formula 3 is not the following compounds:,