Abstract: Provided is a compound of Chemical Formula 1: wherein, in Chemical Formula 1: X1 to X6 are each independently CH or N, with the proviso that at least one of X1 to X6 is N; Ar1 to Ar4 are each independently a substituted or unsubstituted C6-60 aryl, with the proviso that at least one of Ar1 to Ar4 is a C6-60 aryl containing deuterium as a substituent; R1 is hydrogen, deuterium, a substituted or unsubstituted C6-60 aryl, or a substituted or unsubstituted C2-60 heteroaryl containing one or more heteroatoms selected from the group consisting of N, O, and S; and n is an integer of 0 to 8, and an organic light emitting device including the using same.

Abstract: Provided is an organic light-emitting device having improved driving voltage, efficiency, and lifespan, the device comprising a light emitting layer between an anode and a cathode, the light emitting layer comprising a compound of Chemical Formula 1 and a compound of Chemical Formula 2: wherein: Y is O or S, X1, X2 and X3 are each independently CH or N, provided that at least one of X1, X2 and X3 is N, A is a benzene ring fused with two adjacent rings, Ar1-Ar4 are each independently a substituted or unsubstituted C6-60 aryl, or a substituted or unsubstituted C2-60 heteroaryl containing at least one heteroatom selected from the group consisting of N, O and S, provided that at least one of Ar3 and Ar4 is substituted with at least one deuterium, and the other substituents are as defined in the specification.

Abstract: A novel heterocyclic compound of Chemical Formula 1 and organic light emitting device including the same.

Abstract: Provided is a compound of Chemical Formula 1: wherein: X is O or S; L is a direct bond, a substituted or unsubstituted arylene group, or a substituted or unsubstituted heteroarylene group; Ar1 is a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group; Ar2 is a substituted or unsubstituted aryl group having 6 to 30 carbon atoms; R1 to R8 are the same as or different from each other, and each independently is hydrogen, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group; and m and n are each an integer of 0 to 7, and when m is 2 or greater, R7s are the same as or different from each other, and when n is 2 or greater, R8s are the same as or different from each other, and an organic light emitting device including the same.

Abstract: An organic light emitting device comprising an anode; a cathode; and a light emitting layer between the anode and the cathode, the light emitting layer including a compound represented by the following Chemical Formula 1 and a compound represented by the following Chemical Formula 2, is provided.

Abstract: Provided is a compound of Chemical Formula 1: wherein: A is a benzene ring; X1 and X2 are each independently O or S; Y1 to Y3 are each independently N or CH, provided that at least one of Y1 to Y3 is N; Ar1 and Ar2 are each independently a substituted or unsubstituted: C6-?aryl or C2- 60 heteroaryl containing at least one of N, O, and S; R1 to R3 are each independently hydrogen, deuterium, halogen, cyano, nitro, amino, or a substituted or unsubstituted: C1-60 alkyl, C3-60 cycloalkyl, C2-60 alkenyl, C6-60 aryl, or C2-60 heteroaryl containing at least one of N, O, and S; and R?and R5 are each independently hydrogen, deuterium, halogen, cyano, nitro, amino, or a substituted or unsubstituted: C1-60 alkyl, C3-?cycloalkyl, C2-60 alkenyl, C6-60 aryl, or C2-60 heteroaryl containing at least one of N, O, and S, and an organic light emitting device including the same.

Abstract: A compound of Chemical Formula 1, and an organic light emitting device comprising the same.

Abstract: Provided is an organic light emitting device comprising a light emitting layer comprising an organic alloy of a compound of Chemical Formula 1 and a compound of Chemical Formula 2, the device having improved driving voltage, efficiency, and lifespan: where A is a benzene ring fused with the two adjacent rings, X1, X2 and X3 are each independently CH or N, provided that at least one of X1, X2 and X3 is N, Ar1-Ar5 are each independently a substituted or unsubstituted C6-60 aryl or a substituted or unsubstituted C2-60 heteroaryl containing at least one of N, O and S, and the other substituents are defined in the specification, provided that at least one of Ar4 and Ar5 is substituted with at least one deuterium, or at least one R2 is deuterium.

Abstract: An organic light emitting device comprising an anode, a cathode, and a light emitting layer between the anode and the cathode, the light emitting layer including a compound represented by the following Chemical Formula 1 and a compound represented by the following Chemical Formula 2, is provided.

Abstract: An organic light emitting device comprising an anode, a cathode, and a light emitting layer between the anode and the cathode, the light emitting layer including an organic alloy of a compound represented by Chemical Formula 1 and a compound represented by Chemical Formula 2, and having improved driving voltage, efficiency and lifetime.

Abstract: An organic light emitting device having improved efficiency, driving voltage, and lifespan is provided. The organic light emitting device comprises an anode, a cathode, and a light emitting between the anode and the cathode, and the light emitting layer comprises a first compound represented by Chemical Formula 1 and a second compound represented by Chemical Formula 2.

Abstract: An organic light emitting device comprising an anode, a cathode, and a light emitting layer between the anode and the cathode, the light emitting layer including an organic alloy of a compound represented by Chemical Formula 1 and a compound represented by Chemical Formula 2, and having improved driving voltage, efficiency and lifetime.

Abstract: A compound represented by Chemical Formula 1 and an organic light emitting device including the same are provided. The compound is used as a material for an organic material layer of the organic light emitting device, and provides improved efficiency, low driving voltage, and increased lifespan of the organic light emitting device.

Abstract: Provided is a heterocyclic compound of Chemical Formula 1: wherein: Y1 is O or S; Ar1 is a substituted C6-60 aryl; or a substituted or unsubstituted C1-60 heteroaryl containing one or more heteroatoms selected from among O, N, Si, and S; L is a single bond; a substituted or unsubstituted C6-60 arylene; or a substituted or unsubstituted C1-60 heteroarylene containing one or more heteroatoms selected from among O, N, Si, and S; R1 to R3 are each independently hydrogen; deuterium; a halogen; cyano; nitro; amino; a substituted or unsubstituted C1-60 alkyl; a substituted or unsubstituted C1-60 haloalkyl; or a substituted or unsubstituted: C1-60 alkoxy, C1-60 haloalkoxy, C3-60 cycloalkyl, C2-60 alkenyl, C6-60 aryl, C6-60 aryloxy, or C1-60 heteroaryl containing one or more heteroatoms selected from among N, O, and S, and n1 to n3 are each independently 1 to 5, and an organic light emitting device including the same.

Abstract: A cyclic compound represented by Chemical Formula 1 and an organic light emitting device using the same, the compound used as a material of an organic material layer of the organic light emitting device and providing improved properties of efficiency, driving voltage, and lifetime characteristics of the organic light emitting device.

Abstract: A compound represented by Chemical Formula 1 and an organic light emitting device are provided. The compound is used as a material for an organic material layer of the organic light emitting device and provides improved efficiency, low driving voltage and enhanced lifetime.

Abstract: Provided is a novel compound of Chemical Formula 1: wherein: X1 to X3 are each independently N or CH, provided that at least two are N, Y1 and Y2 are independently O or S, L is a single bond, or a substituted or unsubstituted C6-60 arylene or C2-60 heteroarylene, provided that L is bonded to a position *1 or *2, Ar1 and Ar2 are independently a substituted or unsubstituted C6-60 aryl or C2-60 heteroaryl containing one or more of N, O, and S, and R1 to R4 are each independently hydrogen, deuterium, halogen, cyano, nitro, amino, silyl, or a substituted or unsubstituted: C1-60 alkyl, C1-60 haloalkyl, C1-60 alkoxy, C1-60 haloalkoxy, C3-60 cycloalkyl, C2-60 alkenyl, C6-60 aryl, C6-60 aryloxy, C2-60 heteroaryl containing one or more of N, O, and S, or adjacent substituents combine to form a C6-60 aromatic or non-aromatic ring, or a C2-60 heteroaromatic ring, and an organic light emitting device including the same.

Abstract: Provided is a novel compound Chemical Formula 1: wherein: L is a single bond, a substituted or unsubstituted C6-60 arylene, or a substituted or unsubstituted C2-60 heteroarylene containing one or more of N, O and S; L1 and L2 are each independently a single bond or a substituted or unsubstituted C6-60 arylene, Ar1 and Ar2 are each independently a substituted or unsubstituted C6-60 aryl or C2-60 heteroaryl containing one or more of N, O and S, L? is a single bond or a substituted or unsubstituted C6-60 arylene, Q is a substituted or unsubstituted C6-60 aryl, R is deuterium or deuterium-substituted phenyl, and n is 1 to 8, and an organic light emitting device including the same. Organic light emitting devices that include the compound of Chemical Formula 1 as a host material for the light emitting layer exhibit remarkably improved lifetime characteristics without reducing luminous efficiency.

Abstract: A heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same, and the heterocyclic compound providing improved efficiency, low driving voltage, and improved lifetime characteristics of the organic light emitting device.

Abstract: A novel heterocyclic compound of Chemical Formula 1 and an organic light emitting device including the same. wherein one of Ar1 to Ar3 is of the following Chemical Formula 2, and one of Ar4 to Ar7 is a substituted or unsubstituted dibenzofuran; or a substituted or unsubstituted dibenzothiophene, the rest being hydrogen.