The present invention relates to a heterocyclic compound containing an aromatic amine group and an organic light-emitting device comprising the same and, more specifically, to a heterocyclic compound and an organic light-emitting device comprising the same, the heterocyclic compound being excellent in brightness and excellent light emission efficiency and being able to exhibit long life and excellent device characteristics when being used as an organic light-emitting material.

The present invention provides an organic material composition and applications thereof. By the combination of the compounds comprised in the organic material composition, the organic material composition makes the element have a lower driving voltage, a higher current efficiency and a longer service life.

An organic light emitting diode (OLED) in which at least one emitting material layer includes a dopant having the a structure represented by Formula 1 and a (hetero) aryl-amine-based material having with a fluorenyl moiety and/or an azine-based material, and an organic light emitting device including the OLED. The OLED and the organic light emitting device including the host and the dopant can improve their luminous efficiency and luminous lifespan.

Ir(L.sub.A).sub.m(L.sub.B).sub.n  [Formula 1]

The present invention provides a high triplet energy compound of Formula 1 for an organic electroluminescent device: ##STR00001##
In Formula 1, X represents an oxygen or a sulfur atom, and represents a substituted or unsubstituted hetero-aromatic ring containing at least two nitrogens or an alkyl group with C2 to C6. The organic electroluminescent device including the compound used in an emissive layer or an electron transporting layer enhances the efficiency and the stability of the device.

A condensed cyclic compound is represented by Formula 1: ##STR00001##
where R.sub.1 to R.sub.12 are as defined in the specification and at least one of R.sub.1 to R.sub.12 is a group represented by Formula 2, and at least one of R.sub.1 to R.sub.12 is a group represented by Formula 3; ##STR00002##
where L.sub.1, L.sub.2, Ar.sub.1 to Ar.sub.4, a1 and a1 are as defined in the specification. An organic light-emitting device including the condensed cyclic compound.

Objects are to provide the following: a substance that facilitates hole injection and has high triplet excitation energy; a light-emitting element having high emission efficiency using the substance that facilitates hole injection and has high triplet excitation energy; a light-emitting element having low driving voltage; and a light-emitting device, an electronic device, and a lighting device having low power consumption. Provided is a triazole derivative in which a dibenzothiophen-4-yl or dibenzofuran-4-yl group represented by General Formula (G2) is bonded to any one of Ar.sup.1 to Ar.sup.3 of a triazole derivative represented by General Formula (G1). In the formulas, A represents oxygen or sulfur, Ar.sup.1 to Ar.sup.3 separately represent a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, and R.sup.1 to R.sup.7 separately represent hydrogen, an alkyl group having 1 to 4 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 13 carbon atoms. ##STR00001##

Embodiments relate to a delayed fluorescence compound and a display device including the delayed fluorescence compound. The delayed fluorescence compound includes an electron acceptor moiety of benzo[4,5]thieno[2,3-b]quinoxaline and at least one electron donor moiety covalently bonded to the electron acceptor moiety. The at least one electron donor moiety is covalently bonded to a benzene ring of benzo[4,5]thieno[2,3-b]quinoxaline and is selected from carbazole, phenylcarbazole, acridine, and phenylacridine. The effective charge transfer in the delayed fluorescence compound results in improved emitting efficiency of the compound.

An aromatic amine derivative represented by the following formula (1):

##STR00001##

wherein at least one of R.sub.1 to R.sub.8 is a group other than a hydrogen atom, Ar.sub.1 to Ar.sub.4 are a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms.

The present disclosure relates to novel organic electroluminescent compounds and an organic electroluminescent device comprising the same. By using the organic electroluminescent compound of the present disclosure, the organic electroluminescent device may improve driving lifespan while maintaining equal or greater efficiency compared to conventional devices.

The present invention relates to novel light-emitting materials. These materials comprise a non-aromatic spiro polycyclic group. This new side chain could reduce the stacking of the light-emitting materials and result in high PLQY.