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US 2020/0052224 A1Published application
Organic electroluminescence device and condensed cyclic compound for organic electroluminescence device
AssigneeSamsung Display Co., Ltd.
InventorTakuya UNO
Life of this patent
Estimating the term…
Abstract
Provided is an organic electroluminescence device including a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer, and a second electrode disposed on the electron transport region, in which the hole transport region includes a condensed cyclic compound, thereby securing high emission efficiency.
Claims24
An organic electroluminescence device, comprising:
- a first electrode;
- a hole transport region disposed on the first electrode;
- an emission layer disposed on the hole transport region;
- an electron transport region disposed on the emission layer;
- and
- a second electrode disposed on the electron transport region,
- wherein the hole transport region comprises a condensed cyclic compound represented by following Formula 1:
- wherein in Formula 1,
- X is a direct linkage, O, S, NR5, or SiR6R7,
- each of Ar1 and Ar2 is independently a substituted or unsubstituted aryl group having 6 to 40 carbon atoms for forming a ring,
- each of R1 and R2 is independently a substituted or unsubstituted aryl group having 6 to 40 carbon atoms for forming a ring, or a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms,
- each of a and b is independently an integer of 0 to 4,
- each of R5, R6, and R7 is independently a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 40 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group having 2 to 40 carbon atoms for forming a ring,
- the substituted ones are substituted with a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted alkyl group having 1 to 40 carbon atoms, a substituted or unsubstituted aryl group having 6 to 40 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group having 2 to 40 carbon atoms for forming a ring, and
- any one of Ar1, R1 or R2 is represented by following Formula 2:
- wherein in Formula 2,
- L is a substituted or unsubstituted arylene group having 6 to 40 carbon atoms for forming a ring, and
- each of R3 and R4 is independently a substituted or unsubstituted aryl group having 6 to 40 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group having 2 to 40 carbon atoms for forming a ring, and the substituted ones are substituted with a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted cycloalkyl group having 3 to 40 carbon atoms for forming a ring, a substituted or unsubstituted aryl group having 6 to 40 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group having 2 to 40 carbon atoms for forming a ring.
15 more elements
A condensed cyclic compound represented by the following Formula 1:
- wherein in Formula 1,
- X is a direct linkage, O, S, NR5, or SiR6R7,
- each of Ar1 and Ar2 is independently a substituted or unsubstituted aryl group having 6 to 40 carbon atoms for forming a ring,
- each of R1 and R2 is independently a substituted or unsubstituted aryl group having 6 to 40 carbon atoms for forming a ring, or a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms,
- each of a and b is independently an integer of 0 to 4,
- each of R5, R6, and R7 is independently a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 40 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group having 2 to 40 carbon atoms for forming a ring,
- the substituted ones are substituted with a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted alkyl group having 1 to 40 carbon atoms, a substituted or unsubstituted aryl group having 6 to 40 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group having 2 to 40 carbon atoms for forming a ring, and
- any one of Ar1, R1 or R2 is represented by the following Formula 2:
- wherein in Formula 2,
- L is a substituted or unsubstituted arylene group having 6 to 40 carbon atoms for forming a ring, and
- each of R3 and R4 is independently a substituted or unsubstituted aryl group having 6 to 40 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group having 2 to 40 carbon atoms for forming a ring, and the substituted ones are substituted with a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted cycloalkyl group having 3 to 40 carbon atoms for forming a ring, a substituted or unsubstituted aryl group having 6 to 40 carbon atoms for forming a ring, or a substituted or unsubstituted heteroaryl group having 2 to 40 carbon atoms for forming a ring.
8 more elements
Dependencies are inferred from the claim text.