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US 11,450,821 B2Granted
Organic electroluminescence device and polycyclic compound for organic electroluminescence device
AssigneeSamsung Display Co., Ltd.
InventorsYeseul Lee, Soo-Byung Ko, Hyeongmin Kim, HeeChoon Ahn, Hyunah Um, Yirang Im
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Abstract
An organic electroluminescence device 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. The emission layer comprises a polycyclic compound represented by Formula 1 and achieves high efficiency and a low driving voltage. In Formula 1, at least one of Ar1 to Ar4 is represented by Formula 2.
Claims20
An organic electroluminescence device, comprising:
- 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 first electrode and the second electrode each independently comprise at least one selected from the group consisting of Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF/Ca, LiF/Al, Mo, Ti, In, Sn, Zn, an oxide thereof, a compound thereof, and a mixture thereof,
- wherein the emission layer comprises a polycyclic compound represented by Formula 1:
- wherein in Formula 1,
- X is O, S, CR1R2, NR3, or SiR4R5,
- R1 to R5 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, or a substituted or unsubstituted aryl group of 6 to 30 carbon atoms for forming a ring,
- at least one of Ar1 to Ar4 is represented by Formula 2 and the remainder are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, or a substituted or unsubstituted aryl group of 6 to 30 carbon atoms for forming a ring, and
- m1 to m4 are each independently an integer from 0 to 4, where at least one of m1 to m4 is an integer from 1 to 4:
- wherein in Formula 2,
- R6 and R7 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted silyl group, a substituted or unsubstituted aryl group of 6 to 30 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group of 2 to 30 carbon atoms for forming a ring,
- L is a direct linkage, a substituted or unsubstituted divalent alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted arylene group of 6 to 30 carbon atoms, or a substituted or unsubstituted heteroarylene group of 2 to 30 carbon atoms,
- n is 0 or 1,
- p is an integer from 0 to 7, and
- q is an integer from 0 to 8.
14 more elements
A polycyclic compound represented by Formula 1:
- wherein in Formula 1, X is O, S, CR1R2, NR3, or SiR4R5,
- R1 to R5 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, or a substituted or unsubstituted aryl group of 6 to 30 carbon atoms for forming a ring,
- at least one of Ar1 to Ar4 is represented by Formula 2 and the remainder are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, or a substituted or unsubstituted aryl group of 6 to 30 carbon atoms for forming a ring, and
- m1 to m4 are each independently an integer from 0 to 4, where at least one of m1 to m4 is an integer from 1 to 4:
- wherein in Formula 2,
- R6 and R7 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted silyl group, a substituted or unsubstituted aryl group of 6 to 30 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group of 2 to 30 carbon atoms for forming a ring,
- L is a direct linkage, a substituted or unsubstituted divalent alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted arylene group of 6 to 30 carbon atoms, or a substituted or unsubstituted heteroarylene group of 2 to 30 carbon atoms,
- n is 0 or 1,
- p is an integer from 0 to 7, and
- q is an integer from 0 to 8.
7 more elements
A polycyclic compound represented by Formula 3:
- wherein in Formula 3,
- X is O, S, CR1R2, NR3, or SiR4R5,
- R1 to R5 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, or a substituted or unsubstituted aryl group of 6 to 30 carbon atoms for forming a ring,
- R11 and R12 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted silyl group, a substituted or unsubstituted aryl group of 6 to 30 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group of 2 to 30 carbon atoms for forming a ring,
- q11 and q12 are each independently an integer from 0 to 8, and
- m11 and m12 are each independently an integer from 0 to 2, where at least one of m11 or m12 is 1 or 2.
3 more elements
Dependencies are inferred from the claim text.