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US 12,439,821 B2Granted
Light emitting device and fused polycyclic compound for light emitting device
AssigneeSamsung Display Co., Ltd.
InventorsHyoyoung Lee, Soo-Byung Ko, Junha Park, Han Kyu Pak, Jang Yeol Baek, Mun-Ki Sim, Chanseok Oh
Life of this patent
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Abstract
An light emitting device of the present embodiments includes oppositely disposed first electrode and second electrode, and a plurality of organic layers disposed between the first electrode and the second electrode, wherein at least one among the plurality of organic layers includes a fused polycyclic compound represented by Formula 1 below, thereby showing improved emission efficiency:
Claims20
A light emitting device, comprising:
- a first electrode;
- a second electrode facing the first electrode;
- and
- a plurality of organic layers between the first electrode and the second electrode, wherein at least one organic layer among the plurality of organic layers comprises a fused polycyclic compound represented by Formula 1:
- wherein, in Formula 1,
- M is B, Al, Ga, or In,
- X1 and X2 are each independently NR1, O, S, P(═O)R2, or P(═S)R3,
- R1 to R3 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 60 carbon atoms to form a ring, or a substituted or unsubstituted heteroaryl group of 2 to 60 carbon atoms to form a ring, and any of R1 to R3 are optionally combined with an adjacent group to form a ring,
- Cy1 to Cy3 are each independently a substituted or unsubstituted aromatic hydrocarbon ring, or a substituted or unsubstituted aromatic heterocycle, and any of Cy1 to Cy3 are optionally combined with an adjacent group to form a ring, and
- at least one among Cy1 to Cy3 is substituted with a substituent represented by Formula 2:
- wherein, in Formula 2,
- R4 and R5 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted amine group, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 60 carbon atoms to form a ring, or a substituted or unsubstituted heteroaryl group of 2 to 60 carbon atoms to form a ring, and any of R4 and R5 are optionally combined with an adjacent group to form a ring,
- “n1” and “n2” are each independently an integer of 0 to 5,
- at least one among R4 and R5 is a substituted or unsubstituted amine group, or a substituted or unsubstituted carbazole group,
- if R4 is the substituted or unsubstituted amine group, or the substituted or unsubstituted carbazole group, n1 is an integer of 1 to 5,
- if R5 is the substituted or unsubstituted amine group, or the substituted or unsubstituted carbazole group, n2 is an integer of 1 to 5,
- Y is a direct linkage,
- a is 0 or 1,
- a sum of “a” and “n1” is an integer of 5 or less, and a sum of “a” and “n2” is an integer of 5 or less.
16 more elements
A fused polycyclic compound represented by Formula 1:
- wherein, in Formula 1,
- M is B, Al, Ga, or In,
- X1 and X2 are each independently NR1, O, S, P(═O)R2, or P(═S)R3,
- R1 to R3 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 60 carbon atoms to form a ring, or a substituted or unsubstituted heteroaryl group of 2 to 60 carbon atoms to form a ring,
- and any of R1 to R3 are optionally combined with an adjacent group to form a ring,
- Cy1 to Cy3 are each independently a substituted or unsubstituted aromatic hydrocarbon ring, or a substituted or unsubstituted aromatic heterocycle, and any of Cy1 to Cy3 are optionally combined with an adjacent group to form a ring, and
- at least one among Cy1 to Cy3 is substituted with a substituent represented by Formula 2:
- wherein, in Formula 2,
- R4 and R5 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted amine group, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 60 carbon atoms to form a ring, or a substituted or unsubstituted heteroaryl group of 2 to 60 carbon atoms to form a ring, and any of R4 and R5 are optionally combined with an adjacent group to form a ring,
- “n1” and “n2” are each independently an integer of 0 to 5,
- at least one among R4 and R5 is a substituted or unsubstituted amine group, or a substituted or unsubstituted carbazole group,
- if R4 is the substituted or unsubstituted amine group, or the substituted or unsubstituted carbazole group, n1 is an integer of 1 to 5,
- if R5 is the substituted or unsubstituted amine group, or the substituted or unsubstituted carbazole group, n2 is an integer of 1 to 5,
- Y is a direct linkage,
- “a” is 0 or 1,
- a sum of “a” and “n1” is an integer of 5 or less, and a sum of “a” and “n2” is an integer of 5 or less.
13 more elements
Dependencies are inferred from the claim text.