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

Claim 8:
9. The light-emitting device of claim 1, wherein the emission layer comprises at least one heterocyclic compound represented by any of Formulae 1A to 1D:, wherein, in Formulae 1A to 1D,
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),
ring CY6 to ring CY8 are each the same as described in connection with ring CY1 in claim 1,
R6 to R8 are each the same as described in connection with R1 in claim 1, and
a6 to a8 are each the same as described in connection with a1 in claim 1.