Light emitting element, fused polycyclic compound for light emitting element, and electronic apparatus including the light emitting element

A fused polycyclic compound represented by Formula 1:

• where, in Formula 1 above,
• X1 to X4 are each independently O, S, or NRn, wherein at least one of X1 to X4 is NRn,
• each Rn is independently a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, Ew, or a group represented by Formula 2,
• each Ew is independently a fluorine atom, a cyano group, a nitro group, a trifluoromethyl group, a substituted or unsubstituted formyl group, a substituted or unsubstituted pyridine group, a substituted or unsubstituted pyrimidine group, a substituted or unsubstituted pyrazole group, or a substituted or unsubstituted triazine group,
• Ra1 to Ra9 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, or Ew,
• adjacent two or more of Ra2 to Ra9 are optionally bonded together to form a ring, and
• Ra10 to Ra15 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms:
• wherein, in Formula 2,
• Rb1 to Rb5 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, or Ew,
• wherein the fused polycyclic compound optionally comprises a deuterium atom, and
• wherein, the fused polycyclic compound satisfies at least one of Conditions 1 to 3:
• Condition 1
• at least one of Rn is Ew,
• Condition 2
• at least one of Rn is represented by Formula 2, and
• at least one of Rb1 to Rb5 in Formula 2 is Ew,
• Condition 3
• at least one of Ra1 to Ra9 is Ew.

An electronic apparatus comprising a display device configured to provide an image,

• wherein the display device comprises a base layer, a circuit layer disposed on the base layer, and a display element layer disposed on the circuit layer and comprising a light-emitting element,
• the light-emitting element comprises a first electrode, a second electrode disposed on the first electrode, and an emission layer disposed between the first electrode and the second electrode, wherein the emission layer comprises a fused polycyclic compound represented by Formula 1:
• wherein, in Formula 1,
• X1 to X4 are each independently O, S, or NRn, wherein at least one of X1 to X4 is NRn,
• each Rn is independently a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, Ew, or a group represented by Formula 2,
• each Ew is independently a fluorine atom, a cyano group, a nitro group, a trifluoromethyl group, a substituted or unsubstituted formyl group, a substituted or unsubstituted pyridine group, a substituted or unsubstituted pyrimidine group, a pyrazole group, or a substituted or unsubstituted triazine group,
• Ra1 to Ra9 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, or Ew,
• adjacent two or more of Ra2 to Ra9 are optionally bonded together to form a ring, and
• Ra10 to Ra15 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms:
• wherein, in Formula 2,
• Rb1 to Rb5 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, or Ew,
• wherein the fused polycyclic compound optionally comprises a deuterium atom,
• wherein, the fused polycyclic compound satisfies at least one of Conditions 1 to 3:
• Condition 1
• at least one Rn is Ew,
• Condition 2
• at least one Rn is represented by Formula 2, and
• at least one of Rb1 to Rb5 is Ew,
• Condition 3
• at least one of Ra1 to Ra9 is Ew.