The present specification relates to a novel compound, and a color conversion film, a backlight unit and a display apparatus including the same.

The present disclosure is directed to organic electroluminescent devices comprising thermally activated emission material(s) in an emission layer. The present disclosure is also directed to compounds capable of providing thermally activated delayed fluorescence, and to emission layers comprising at least one of the compounds. The compounds may be used in organic layers such as emission layers of an organic electroluminescence device such as fluorescent OLEDs.

A compound having a structure of Formula I: ##STR00001##
is provided. In the structure of Formula I, each one of X.sup.1 to X.sup.16 is independently CR.sup.X or N; each R.sup.X and R are independently selected from the group consisting of hydrogen, deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, carbazole, azacarbazole, dibenzofuran, dibenzothiophene, dibenzoselenophene, azadibenzofuran, azadibenzothiophene, azadibenzoselenophene, triphenylene, azatriphenylene, and combinations thereof; and any adjacent R.sup.X can join to form fused or unfused rings. Formulations and devices, such as an OLEDs, that include the compound containing a structure of Formula I are also described.

Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1,2-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.

The present invention relates to a novel compound and an organic electroluminescence device including the same, and the compound according to the present invention may be used in an organic material layer, preferably a light-emitting layer of an organic electroluminescence device, thereby enhancing the light-emitting efficiency, driving voltage, lifespan, and the like of the organic electroluminescence device.

The present specification relates to a hetero-cyclic compound and an organic light emitting device comprising the same.

Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1,2-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.

The present invention relates to the use of aromatic boronic acid or borinic acid derivatives in organic electronic devices, in particular electroluminescent devices.

An organic light emitting device including: an anode; a cathode opposite to the anode; and a light emitting layer interposed between the anode and the cathode, wherein the light emitting layer includes a first compound of Chemical Formula 1, and a second compound of Chemical Formula 2:

##STR00001##

wherein Ar.sub.1 and Ar.sub.2 are each independently a substituted or unsubstituted C.sub.6-60 aryl or C.sub.2-60 heteroaryl containing at least one heteroatom selected among N, O and S; X.sub.1 and X.sub.2 are each independently O or S; A.sub.1 and A.sub.2 are each independently a naphthalene ring fused with an adjacent pentagonal ring; Ar is a substituted or unsubstituted C.sub.6-60 aryl or C.sub.2-60 heteroaryl containing at least one heteroatom selected among N, O and S; and the other substituents are as defined in the specification.

Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1,2-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.