Patent ID: 11895915
Assignee: LG CHEM, LTD.
Field: Organic fine chemistry (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 4:
5. An organic light emitting diode, comprising:
first and second electrodes facing each other; and
at least one emitting unit disposed between the first and second electrodes and including an emitting material layer,
wherein the emitting material layer includes a first compound, a second compound and a third compound,
wherein a Lowest Unoccupied Molecular Orbital (LUMO) energy level of the first compound (LUMOH) and a LUMO energy level of the second compound (LUMOTD) satisfy the following relationship in Equation (1),
wherein a Highest Occupied Molecular Orbital (HOMO) energy level of the first compound (HOMOH), a HOMO energy level of the second compound (HOMOTD) and a HOMO energy level of the third compound (HOMOFD) satisfy the following relationship in Equation (2):

|LUMOH|−|LUMOTD|≤0.8 eV  (1)

|HOMOH|≥|HOMOTD|≥|HOMOFD|  (2)

wherein the first compound is selected from a compound having the following structure of Chemical Formula 3:, wherein each of R1 to R15 is independently hydrogen, deuterium, tritium, silyl group, C1˜C10 alkyl group, C1˜C10 alkoxy group, C1-C10 alkyl amino group, C5˜C30 aryl group, C5˜C30 alkyl aryl group, C5˜C30 aryloxyl group, or C5˜C30 aryl amino group, or two adjacent groups among R1 to R15 forms a fused aryl ring or a fused hetero aryl ring each of which is unsubstituted or substituted with C5˜C30 aryl group or C4˜C30 hetero aryl group; and
each of X and Y is independently oxygen (O) or sulfur (S);
wherein the second compound comprises:, wherein the third compound has a quinoline-acridine core, and
wherein the third compound is selected from the group consisting of 5,12-dimethylquinolino(2,3-b)acridine-7,14(5H, 12H)-dione, 5,12-diethylquinoline(2,3-b)acridine-7,14(5H, 12H)-dione, 5,12-dibutyl-3,10-difluoroquinolino(2,3-b)acridine-7,14(5H, 12H)-dione, 5,12-dibutyl-3,10-bis(trifluromethyl)quinolino(2,3-b)acridine-7,14(5H, 12H)-dione and combinations thereof.