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US 12,757,625 B2Granted
Light emitting device
AssigneeSamsung Display Co., Ltd.
InventorsKyoung Sunwoo, Taeil Kim, Junha Park, MinJae Sung, Mun-Ki Sim, Minjung Jung
Life of this patent
Estimating the term…
Abstract
A light emitting device that includes a first electrode, a second electrode facing the first electrode, and an emission layer between the first electrode and the second electrode is provided. The emission layer includes a first compound represented by Formula 1, and at least one of a second compound represented Formula H-1, a third compound represented Formula H-2, or a fourth compound represented Formula D-2, thereby exhibiting improved luminous efficiency characteristics.
Claims20
A light emitting device comprising:
- a first electrode;
- a second electrode facing the first electrode;
- and
- an emission layer between the first electrode and the second electrode,
- wherein the emission layer comprises:
- a first compound represented by Formula 1;
- and
- at least one of a second compound represented by Formula H-1, a third compound represented by Formula H-2, or a fourth compound represented by Formula D-2:
- wherein, in Formula 1,
- X1 and X2 are each independently NRa, O, or S, and at least one of X1 or X2 is NRa,
- Y1 and Y2 are each independently NRb, O, or S,
- R1 to R9 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted amine group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 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, and/or bonded to an adjacent group to form a ring,
- Ra and Rb are each independently a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 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, and/or bonded to an adjacent group to form a ring,
- n1, n2, n7, and ng are each independently an integer from 0 to 3,
- n3 is an integer from 0 to 2, and
- n4 to n6, and n8 are each independently an integer from 0 to 4,
- wherein, in Formula H-1,
- L1 is a direct linkage, a substituted or unsubstituted arylene group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroarylene group having 2 to 30 ring-forming carbon atoms,
- Ar1 is 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,
- R8 and R9 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, and
- n6 and n7 are each independently an integer from 0 to 4,
- wherein, in Formula H-2,
- at least one among Z1 to Z3 is N, and the Z1 to Z3 that are not N are CR13, and
- R10 to R13 are each independently a hydrogen atom, a deuterium atom, a cyano group, a substituted or unsubstituted silyl group, 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, and
- wherein, in Formula D-2,
- Q1 to Q4 are each independently C or N,
- C1 to C4 are each independently a substituted or unsubstituted hydrocarbon ring having 5 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heterocycle having 2 to 30 ring-forming carbon atoms,
- L21 to L23 are each independently a direct linkage,
- a substituted or unsubstituted divalent alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted arylene group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroarylene group having 2 to 30 ring-forming carbon atoms,
- b1 to b3 are each independently 0 or 1,
- R21 to R26 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted amine group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 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 1 to 30 ring-forming carbon atoms, and/or bonded to an adjacent group to form a ring, and
- d1 to d4 are each independently an integer from 0 to 4.
29 more elements
A light emitting device comprising:
- a first electrode;
- a hole transport region on the first electrode;
- an emission layer on the hole transport region;
- an electron transport region on the emission layer;
- and
- a second electrode on the electron transport region,
- wherein the emission layer comprises a first compound represented by Formula 1, and
- the hole transport region comprises a hole transport compound represented by Formula H-a:
- wherein, in Formula 1,
- X1 and X2 are each independently NRa, O, or S, and at least one of X1 or X2 is NRa,
- Y1 and Y2 are each independently NRb, O, or S,
- R1 to R9 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted amine group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 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, and/or bonded to an adjacent group to form a ring,
- Ra and Rb are each independently a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 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, and/or bonded to an adjacent group to form a ring,
- n1, n2, n7, and n9 are each independently an integer from 0 to 3,
- n3 is an integer from 0 to 2, and
- n4 to n6, and n8 are each independently an integer from 0 to 4, and Formula H-a
- wherein, in Formula H-a,
- Ya and Yb are each independently CReRf, NRg, O, or S,
- when Ya is O then Yb is CReRf, NRg, or S,
- when Ya is CReRf then Yb is NRg, O, or S,
- Ara is 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,
- L1 and L2 are each independently a direct linkage, a substituted or unsubstituted arylene group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroarylene group having 2 to 30 ring-forming carbon atoms,
- Ra to Rg are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted amine group, a substituted or unsubstituted thio group, a substituted or unsubstituted oxy group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 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, and/or bonded to an adjacent group to form a ring,
- na and nd are each independently an integer from 0 to 4, and
- nb and nc are each independently an integer from 0 to 3.
22 more elements
Dependencies are inferred from the claim text.