The present specification provides a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device including the same.

To provide an organic EL device having high efficiency and extended lifetime while having a low driving voltage, and a material for an organic electroluminescent device suitable therefor. This material for an organic electroluminescent device is comprised of an indolocarbazole compound represented by the following general formula (1):

[C1]

##STR00001##

wherein a ring A is a heterocycle represented by formula (1a); Ar.sup.1 and Ar.sup.2 each represent an aromatic hydrocarbon group, an aromatic heterocyclic group, or a linked aromatic group; L.sup.2 represents an aromatic heterocyclic group; Ar.sup.3 represents an aromatic hydrocarbon group or a linked aromatic group in which a plurality of these aromatic hydrocarbon groups are linked to each other; and a+b+c≥1.

Provided is a compound of Chemical Formula 1:

##STR00001##

wherein n is 0 or 1, when n is 0, at least one of R1 to R10 is a group of Chemical Formula A, and when n is 1, at least one of R1 to R12 is a group of Chemical Formula A:

##STR00002##

wherein L1 is a direct bond, or a substituted or unsubstituted arylene or heteroarylene group; l1 is an integer of 1 to 5; m is an integer of 1 to 3; when l1 is 2 or greater, the two or more L1s are the same as or different from each other, and an organic light emitting device including the same.

Disclosed are a heterocyclic compound which may significantly improve a service life, efficiency, electrochemical stability, and thermal stability of an organic light emitting device, and an organic light emitting device in which the heterocyclic compound is contained in an organic material layer.

Disclosed are a heterocyclic compound which may significantly improve a service life, efficiency, electrochemical stability, and thermal stability of an organic light emitting device, and an organic light emitting device in which the heterocyclic compound is contained in an organic material layer.

The present specification provides a heterocyclic compound represented by Chemical Formula 1, an organic light emitting device including the same, and a composition for an organic material layer of the organic light emitting device.

Provided are a heterocyclic arylamine compound, an organic electroluminescent device and a display panel. The heterocyclic arylamine compound has a structure represented by Formula I. The structure of the heterocyclic arylamine compound is designed so that the heterocyclic arylamine compound has relatively high molecular polarizability, relatively high refractive index and relatively high crystallinity and may be used as a material of a capping layer to prepare a top-emitting OLED device, and the prepared OLED device has relatively high current efficiency and long lifetime.

Disclosed are a compound represented by Chemical Formula 1, and a film, an infrared sensor, and an electronic device including the compound.

##STR00001##

In Chemical Formula 1, Q.sup.1, Q.sup.2, X.sup.1, X.sup.2, R.sup.1, R.sup.2, and A.sup.1 are the same as in the specification.

Disclosed are a compound represented by Chemical Formula 1, and a film, an infrared sensor, and an electronic device including the compound.

##STR00001##

In Chemical Formula 1, Q.sup.1, Q.sup.2, X.sup.1, X.sup.2, R.sup.1, R.sup.2, and A.sup.1 are the same as in the specification.

The present disclosure relates to an organic electroluminescent compound, an organic electroluminescent material and an organic electroluminescent device comprising the same, a plurality of host materials comprising at least one first host material and at least one second host material, and an organic electroluminescent device comprising the same. By comprising the compound according to the present disclosure as a single host material or as a plurality of host materials, it is possible to produce an organic electroluminescent device having improved driving voltage, luminous efficiency, and/or lifetime properties compared to the conventional organic electroluminescent devices.