An organic electroluminescence device according to an embodiment of the present disclosure includes a first electrode, a hole transport region, an emission layer, an electron transport region, and a second electrode, in which the emission layer includes a polycyclic compound represented by Formula 1, thereby achieving improved emission efficiency: ##STR00001##

An organic electroluminescence device according to an embodiment of the present disclosure includes a first electrode, a hole transport region, an emission layer, an electron transport region, and a second electrode, in which the emission layer includes a polycyclic compound represented by Formula 1, thereby achieving improved emission efficiency: ##STR00001##

The invention relates to cyclic compounds which are suitable for use in electronic devices, and to electronic devices, in particular organic electroluminescent devices containing said compounds.

The invention relates to cyclic compounds which are suitable for use in electronic devices, and to electronic devices, in particular organic electroluminescent devices containing said compounds.

An organic compound represented by the following general formula [1] is provided. In the following general formula [1] IrL.sub.mL′.sub.n, where L and L′ denote different bidentate ligands, the partial structure IrL denotes a partial structure represented by the general formula [A-1] or [A-2], and the partial structure IrL′ denotes a partial structure represented by the general formula [B-1] or [B-2].

##STR00001##

Provided is an electroluminescent device. The electroluminescent device includes an anode, a cathode, and an organic layer disposed between the anode and the cathode, wherein the organic layer at least comprises a first compound having a structure of H.sub.1-L.sub.1-Ar.sub.1 and a second compound having a structure of H.sub.2-L.sub.2-Ar.sub.2. These new compound combinations can be used as host materials in electroluminescent devices. These new compound combinations can greatly improve the lifetime of the device and provide the device with better performance. Further provided is a display assembly including the electroluminescent device.

Provided is an electroluminescent device. The electroluminescent device includes an anode, a cathode, and an organic layer disposed between the anode and the cathode, wherein the organic layer at least comprises a first compound having a structure of H.sub.1-L.sub.1-Ar.sub.1 and a second compound having a structure of H.sub.2-L.sub.2-Ar.sub.2. These new compound combinations can be used as host materials in electroluminescent devices. These new compound combinations can greatly improve the lifetime of the device and provide the device with better performance. Further provided is a display assembly including the electroluminescent device.

The present invention provides for certain sulfonyl ureas and related compounds which have advantageous properties and show useful activity in the inhibition of activation of the NLRP3 inflammasome. Such compounds are useful in the treatment of a wide range of disorders in which the inflammation process, or more specifically the NLRP3 inflammasome, have been implicated as being a key factor.

The present invention provides for certain sulfonyl ureas and related compounds which have advantageous properties and show useful activity in the inhibition of activation of the NLRP3 inflammasome. Such compounds are useful in the treatment of a wide range of disorders in which the inflammation process, or more specifically the NLRP3 inflammasome, have been implicated as being a key factor.

The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound of the present disclosure, it is possible to provide an organic electroluminescent device having excellent thermal stability, low driving voltage, high luminous efficiency, and/or improved lifespan properties.