Patent ID: 11957046
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  H | IPC H

Claim 4:
5. The electroluminescent device of claim 3, wherein the first hole transporting material comprises at least one of compounds represented by Chemical Formula 2-1 to Chemical Formula 2-2:, wherein, in Chemical Formula 2-1 to Chemical Formula 2-2,
X3 and X4 are the same as defined in Chemical Formula 1 of claim 2,
R11, R12, R21, and R22 is each independently the unsubstituted C4 to C20 alkyl group,
R13, R14, R15, R16, R23, R24, R25, and R26 are each independently a substituted or unsubstituted C4 to C20 alkyl group, a substituted or unsubstituted C3 to C20 cycloalkyl group, a substituted or unsubstituted C6 to C20 aryl group, or a substituted or unsubstituted C3 to C20 heteroaryl group, provided that at least one of R11 to R14 and at least one of R21 to R26 are a substituted or unsubstituted C4 to C20 alkyl group,
R27 and R28 are each independently a substituted or unsubstituted C2 to C40 alkylamine group, a substituted or unsubstituted C12 to C40 arylamine group, or a substituted or unsubstituted carbazolyl group.