Patent ID: 11910706
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 9:
10. The light-emitting device of claim 1, wherein the emission layer comprises at least one heterocyclic compound represented by any of Formulae 1A-1 to 1D-1:, wherein, in Formulae 1A-1 to 1D-1,
X2 to X4, ring CY1 to ring CY4, R0 to R5, a1 to a4, and a56 are each the same as described in claim 1,
X2A is C(Z2a)(Z2b) or N(Z2a),
X3B is C(Z3a)(Z3b) or N(Z3a),
X4C is C(Z4a)(Z4b) or N(Z4a),
R6 to R8 are each the same as described in connection with R1 in claim 1,
a66 is the same as described in connection with a56 in claim 1, and
a74 and a84 are each independently an integer selected from 0 to 4.