Patent ID: 11895857
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 8:
9. The organic light emitting element of claim 1, wherein the second hole transport layer and the third hole transport layer each independently comprise an aromatic compound represented by one of Formulas 1 to 4:, wherein in Formulas 1 to 4,
a, b, and f to j are each independently an integer from 1 to 4,
c to e are each independently an integer of 1 to 5,
R1 to R3, R11 to R13, R21 to R24, R31, and R32 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 30 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or bonded to an adjacent group to form a ring, and
at least one among R1 to R3, at least one among R11 to R13, at least one among R21 to R24, and at least one of R31 and R32 are each independently a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, or a substituted or unsubstituted cycloalkyl group having 3 to 30 carbon atoms.