A compound is represented by a formula (1) below. D is a group represented by a formula (11), (12) or (13) below; at least one D is a group represented by the formula (12) or (13); at least one R is a substituent; and a sum of the number of R serving as a substituent and the number of a group represented by the formula (12) or (13) is 3 or 4.

##STR00001##

Provided is a compound of Formula 1:

##STR00001## wherein: X and Y are independently O, S, or CZ1Z2; Ring A is a benzene or naphthalene ring; A1 to A4 are independently hydrogen, deuterium, a halogen group, a cyano group, a nitro group, a hydroxyl group, or a substituted or unsubstituted: alkyl, cycloalkyl, aryl, or heterocyclic group; R1 to R6, Z1, and Z2 are independently a substituted or unsubstituted: alkyl, aryl, or heterocyclic group; n1 to n3, m, and l are 0 or 1 and n1+n2+n3 is ≥2; a1 and a2 are 1 to 4; a3 is 1 to 3; a4 is 1 to 6; and when a1 to a4 are each 2 or higher, structures in the parenthesis are the same or different, provided that when Ring A is naphthalene, m is 0, and when l is 1, Ring A is a benzene ring,
and an organic light-emitting device comprising the compound.

Provided is an organic light emitting device including: a cathode; an anode facing the cathode; a light emitting layer between the cathode and the anode and comprising a host and a dopant; a hole transport region between the anode and the light emitting layer; and an electron transport region between the cathode and the light emitting layer, wherein the hole transport region includes and an organic material layer comprising a compound of Chemical Formula 1, and the dopant comprises a compound of Chemical Formula 2:

##STR00001## wherein: Ar1 to Ar6 are each independently a substituted or unsubstituted: C6-60 aryl group or C2-60 heterocyclic group, or are bonded to an adjacent substituent to form a substituted or unsubstituted ring; Cy is a substituted or unsubstituted: aliphatic hydrocarbon ring, aromatic ring, or hetero ring, or a substituted or unsubstituted ring in which these rings are fused.

An organic electroluminescence device including: a cathode; an anode; and at least one emitting layer disposed between the cathode and the anode, wherein the emitting layer contains a first host material, a second host material, and a dopant material, wherein the first host material is a compound represented by the following formula (1), the second host material is a compound represented by the following formula (2), and the first host material and the second host material are different compounds.

##STR00001##

An organic light-emitting display panel and a preparation method therefor, and a display apparatus. The organic light-emitting display panel comprises: a substrate; a plurality of organic light-emitting diodes, wherein the plurality of organic light-emitting diodes are located on the substrate, and each of the organic light-emitting diodes is provided with a first electrode, a second electrode, and a light-emitting layer and a hole injection layer which are located between the first electrode and the second electrode; and anti-crosstalk isolation electrodes, wherein each of the anti-crosstalk isolation electrodes is located at a gap between two adjacent organic light-emitting diodes, the anti-crosstalk isolation electrodes are configured to connect to a fixed voltage, and a voltage difference between each anti-crosstalk isolation electrode and each second electrode is less than a voltage difference between each first electrode and each second electrode.

A sensor-embedded display panel includes a substrate, a light emitting element on the substrate and including a light emitting layer, and a photosensor on the substrate and including a photoelectric conversion layer in parallel with the light emitting layer along an in-plane direction of the substrate, wherein the light emitting element and the photosensor each include a separate portion of a first common auxiliary layer that is a single piece of material that extends continuously on the light emitting layer and the photoelectric conversion layer, and a separate portion of a common electrode on the first common auxiliary layer and is configured to apply a common voltage to both the light emitting element and the photosensor, and the photoelectric conversion layer includes a sequential stack from the first common auxiliary layer of a first n-type semiconductor layer, a second n-type semiconductor layer, and a p-type semiconductor layer.

A compound, a composition for an organic optoelectronic device, an organic optoelectronic device, and a display device, the compound being represented by Chemical Formula 1:

##STR00001##

Provided are a film including a coordination compound and a light-emitting device including the film, wherein the coordination compound has a novel structure in which a ligand including an electron donor atom is coordinated to a boron atom in a heterocyclic compound.

An organic compound is disclosed comprising: a first chemical moiety with a structure of formula I

##STR00001##

and two second chemical moieties, independently from another with a structure of formula II,

##STR00002##

wherein the first chemical moiety is linked to each of the two second chemical moieties via a single bond.

A novel heterocyclic compound is provided. In particular, a novel heterocyclic compound which can improve the element characteristics of a light-emitting element is provided. A novel light-emitting element with high emission efficiency and high heat resistance is provided. A heterocyclic compound represented by General Formula (G1). A represents any of a dibenzothiophenyl group, a dibenzofuranyl group, and a carbazolyl group. DBq represents a dibenzo[f,h]quinoxalinyl group. In addition, n is 0 or 1. Each of Ar1 to Ar4 independently represents a substituted or unsubstituted arylene group having 6 to 10 carbon atoms. In Ar1 to Ar4, the adjacent arylene groups may be bonded to each other to form a ring. When the adjacent arylene groups in Ar1 to Ar4 form a fluorene skeleton, the fluorene skeleton may have a substituent. ##STR00001##