Light-emitting element, fused polycyclic compound for the light-emitting element, and display device including the light-emitting element

A fused polycyclic compound represented by Formula 1:

• wherein in Formula 1,
• Rn is a group represented by Formula 2,
• X0 is S or N(Ra1),
• Ra1 and Ra2 are each independently a group represented by Formula 3, and
• R1 to R10 are each independently a hydrogen atom, a deuterium atom, a cyano group, a substituted or unsubstituted amine group, a substituted or unsubstituted alkyl group having 1 to 30 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 Rb13 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted oxy group, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 30 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 bonded to an adjacent group to form a ring,
• wherein in Formula 3,
• Rc1 to Rc9 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted oxy group, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 30 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 bonded to an adjacent group to form a ring.

A display device comprising:

• a circuit layer disposed on a base layer;
• and
• a display element layer disposed on the circuit layer and including a light-emitting element, wherein
• 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, and
• the emission layer comprises a fused polycyclic compound represented by Formula 1:
• wherein in Formula 1,
• Rn is a group represented by Formula 2,
• X0 is S or N(Ra1),
• Ra1 and Ra2 are each independently a group represented by Formula 3, and
• R1 to R10 are each independently a hydrogen atom, a deuterium atom, a cyano group, a substituted or unsubstituted amine group, a substituted or unsubstituted alkyl group having 1 to 30 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 Rb13 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted oxy group, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 30 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 bonded to an adjacent group to form a ring;
• wherein in Formula 3,
• Rc1 to Rc9 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted oxy group, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 30 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 bonded to an adjacent group to form a ring.