Abstract: A compound of Chemical Formula 1: wherein: R1 to R5 are the same as or different from each other, and are each independently hydrogen, deuterium, a nitrile group, a halogen group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group; Ar1 is a substituted or unsubstituted heteroaryl group including two or more N atoms; Ar2 is hydrogen, deuterium, a nitrile group, a halogen group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, or a substituted or unsubstituted fused ring group; and the other substituents are as defined in the specification; and an organic light emitting device including the same. The device including the compound as a material in an organic material layer exhibits excellent characteristics in terms of efficiency, driving voltage, and/or stability.

Abstract: A compound Chemical Formula 1: wherein: each X is independently N, CH, or CD, provided that two or more of X are N, L is a single bond, or a substituted or unsubstituted C6-60 arylene, Ar1 and Ar2 are each independently a substituted or unsubstituted C6-60 aryl, Ar3 and Ar4 are each independently phenyl that is unsubstituted or substituted with at least one deuterium, any one of Ar1 to Ar4 is substituted with cyano, HAr is pyrimidinyl which is unsubstituted or substituted with 1 to 3 substituent groups each independently selected from among deuterium, a substituted or unsubstituted C1-60 alkyl, and a substituted or unsubstituted C6-60 aryl; triazinyl which is substituted with two substituted or unsubstituted C6-60 aryls; or quinazolinyl substituted with one substituted or unsubstituted C6-60 aryl, and the other substituents are as described in the specification, and an organic light emitting device comprising the same.

Abstract: A heterocyclic compound represented by Chemical Formula 1 and an organic light emitting device including the same, and the heterocyclic compound which is used as a material of an organic material layer of the organic light emitting device and provides improved efficiency, low driving voltage and improved lifetime characteristics of the organic light emitting device.

Abstract: A novel compound represented by the following Chemical Formula 1, and an organic light emitting device including the same.

Abstract: A compound of Chemical Formula 1: wherein: L1 and L2 are each independently a substituted or unsubstituted C6-60 arylene, each R1 is independently hydrogen, deuterium, halogen, cyano, or a substituted or unsubstituted: C1-60 alkyl, C2-60 alkenyl, C2-60 alkynyl, C3-60 cycloalkyl, C6-60 aryl or C2-60 heteroaryl containing one or more of N, O and S; one of Ar1 and Ar2 is a substituent of Chemical Formula 2, and the other is a substituted or unsubstituted C14-60 aromatic fused polycyclic ring: wherein: each X is independently N or CH, provided that at least one X is N; and Ar3 and Ar4 are each independently a substituted or unsubstituted C6-60 aryl or C2-60 heteroaryl containing one or more of N, O and S, and the other substituents are as defined in the specification; and an organic light emitting device comprising the same.

Abstract: Provided is an organic light emitting device including a first organic material layer that comprises a compound of Formula 1: and a second organic material layer comprising a compound of Formula 2:

Abstract: The present specification relates to a compound of Chemical Formula 1 and an organic light emitting device including the same.

Abstract: Provided is a heterocyclic compound of Chemical Formula 1: [Chemical Formula 1] wherein: L1 is a direct bond or a substituted or unsubstituted arylene group; L2 is a substituted or unsubstituted arylene group; two or more of X1 to X3 are N and any remaining is CR?; Np is Chemical Formula 2: [Chemical Formula 2] wherein: the dotted lines “------” are positions of attachment of Chemical Formula 2 where one is bonded to L1 and the other is bonded to L2 of Chemical Formula 1; and the other substituents are as defined in the specification; and an organic light-emitting device including the same. A light emitting device that includes the compound of Chemical Formula 1 in an organic material layer exhibits high efficiency and long service life.

Abstract: The present specification relates to an organic light emitting device having high light emission efficiency. Such organic light emitting device comprises a light emitting layer provided between the cathode and the anode, and including an anthracene derivative represented by the following Chemical Formula 2, and an organic material layer provide between the cathode and the light emitting layer, and including a cyclic compound represented by the following Chemical Formula 1. wherein Ar1, Ar2, X, G1, G2, m, n, R1-R8, Ar3, Ar4, L3, and I3 are described herein.

Abstract: The present specification relates to a fluorene derivative of Chemical Formula 1, and an organic light emitting device including the same.

Abstract: A compound represented by Chemical Formula 1 and an organic light emitting device including the same are provided.

Abstract: The present application relates to a compound of Chemical Formula 1 and an organic light emitting device including the same: wherein Ar1 to Ar3, L1 and L2 are described herein.

Abstract: Provided is an organic electroluminescent device, the organic electroluminescent device comprising a cathode, an anode, and one or more organic material layers provided between the cathode and the anode, the one or more organic material layers comprising a light emitting layer, an electron transport region and a hole transport region, wherein all of the organic materials, other than a dopant, contained in the one or more organic material layers have a triplet state energy of 2.5 eV or higher, at least three types of the organic materials having a triplet state energy of 2.5 eV or higher have a triplet state energy of 2.7 eV or higher, and at least two types of the organic materials having a triplet state energy of 2.5 eV or higher include a spiro compound.

Abstract: Provided is an organic light emitting device including a first electrode; a second electrode opposite to the first electrode; and a first organic material layer and a second organic material layer provided between the first electrode and the second electrode, wherein the first organic material layer includes a compound of Chemical Formula 1: wherein: at least one of Xa to Xc is N, and the rest are CR; and Ar2 to Ar4 are each independently a substituted or unsubstituted aryl or heterocyclic group, and the second organic material layer includes a compound of wherein: HAr is a substituted or unsubstituted heterocyclic group including at least one or more Ns; L1 and L2 are each independently a direct bond or a substituted or unsubstituted arylene or divalent heterocyclic group; and Ar1 is a direct bond, —O—, or a substituted or unsubstituted arylene or divalent heterocyclic group.

Abstract: Provided is a fluorene derivative of Chemical Formula 1: and an organic light emitting device comprising the same.

Abstract: Provided is a compound of Chemical Formula 1: wherein, in Chemical Formula 1: X1 to X3 are each independently N or CH, provided that at least one of X1 to X3 is N; X4 to X6 are each independently N or CH, provided that at least one of X4 to X6 is N; Ar1 to Ar4 are each independently a substituted or unsubstituted C6-60 aryl, or a substituted or unsubstituted C2-60 heteroaryl containing any one or more selected from the group consisting of N, O, and S; L1 to L3 are each independently a single bond, a substituted or unsubstituted C6-60 arylene, or a substituted or unsubstituted C2-60 heteroarylene containing any one or more selected from the group consisting of N, O, and S; and n is 1 or 2, and an organic light emitting device including the same.

Abstract: An organic light emitting device having a first organic material layer that includes a compound of Chemical Formula 1 and the second organic material layer that includes a compound of Chemical Formula 2,

Abstract: Provided is a heterocyclic compound of Chemical Formula 1: wherein X1 is CR1 or N, X2 is CR2 or N, X3 is CR3 or N, X4 is CR4 or N, Y1 is CR5 or N, Y2 is CR6 or N, Y3 is CR7 or N, Y4 is CR8 or N, Z1 is CR9 or N, Z2 is CR10 or N, Z3 is CR11 or N, and Z4 is CR12 or N, wherein X1 to X4, Y1 to Y4 and Z1 to Z4 are not N at the same time; and at least one of R1 to R12 is Chemical Formula 2: wherein A1 is O, S or Se; L1 is a direct bond, or a substituted or unsubstituted arylene or heteroarylene group; at least one of Ar1 and Ar2 is a substituted or unsubstituted alkyl group, and the rest is a substituted or unsubstituted aryl or heteroaryl group; and the rest are the same as or different from each other, and each independently is hydrogen, deuterium, halogen, cyano, nitro, hydroxyl, carbonyl, ester, imide, amide, or a substituted or unsubstituted: alkyl, cycloalkyl, alkoxy, aryloxy, alkylthioxy, arylthioxy, alkylsulfoxy, arylsulfoxy, alkenyl, silyl, boron, amine, arylphosphine oxide, aryl, or heteroa

Abstract: A novel compound represented by the following Chemical Formula 1, and an organic light emitting device comprising the same.

Abstract: Provided is a compound of Chemical Formula 1 or 2: wherein: R1 to R4 are each independently hydrogen or deuterium; n1 to n4 are an integer of 1 to 4; L1 and L2 are each independently a direct bond or a substituted or unsubstituted C6-60 arylene; and Ar1 and Ar2 are each independently a substituent of Chemical Formula 3: wherein X1 to X5 are each independently N or C(R5), wherein at least two of X1 to X5 are N; and each R5 is independently hydrogen, deuterium, a substituted or unsubstituted C1-20 alkyl, a substituted or unsubstituted C6-60 aryl, or a substituted or unsubstituted C2-60 heteroaryl containing at least one of N, O and S, or two adjacent R5s combine to form a benzene ring; and an organic light emitting device including the same. The device exhibits significantly superior efficiency and lifespan.