An organometallic compound represented by Formula 1:

M.sub.1(L.sub.11).sub.n11(L.sub.12).sub.n12  Formula 1

wherein, in Formula 1, M.sub.1 is a first-row transition metal, a second-row transition metal, or a third-row transition metal, L.sub.11 is a ligand represented by Formula 1-1, L.sub.12 is a monodentate ligand or a bidentate ligand, n11 is 1, and n12 is 0, 1, or 2:

##STR00001##

wherein ring CY.sub.1 to ring CY.sub.4, E.sub.1, T.sub.1 to T.sub.4, R.sub.10 to R.sub.40, X.sub.1 to X.sub.4, n1 to n4, a1 to a4, and c10 to c40 may each be understood by referring to the descriptions thereof provided herein, and *1, *2, *3, and *4 are each a binding site to M.sub.1 in Formula 1.

A light-emitting device, an electronic device, and a display device each consume less power are provided. The light-emitting device includes a first light-emitting element, a second light-emitting element, and a third light-emitting element that share an EL layer. The EL layer includes a layer containing a light-emitting material that emits blue fluorescence and a layer containing a light-emitting material that emits yellow or green phosphorescence. Light emitted from the second light-emitting element enters a color filter layer or a second color conversion layer, and light emitted from the third light-emitting element enters a first color conversion layer.

A compound including a first ligand L.sub.A of Formula I ##STR00001##
is disclosed. In the structure of Formula I, one of L.sup.1 and L.sup.2 is C, and the other is N; Y.sup.1 to Y.sup.14 are each C or N; at least two adjacent Y.sup.7, Y.sup.8, Y.sup.9, and Y.sup.10 are carbon atoms that are fused to a structure of Formula II ##STR00002##
Z.sup.1 and Z.sup.2 are each O, S, Se, NR, CRR′, or SiRR′; and each R, R′, R.sup.A, R.sup.B, R.sup.C, and R.sup.D is hydrogen or a substituent; and any two substituents may be joined or fused together to form a ring. In the compound, L.sub.A is complexed to a metal M by L.sup.1 and L.sup.2, and M has an atomic weight greater than 40. Organic light emitting devices and consumer products containing the compounds are also disclosed.

An organic electroluminescence device in which a polycyclic compound including an electron donor and an electron acceptor is included in an emission layer is provided. The electron donor contains an acridine derivative or a dibenzo-azasiline derivative, and the electron acceptor contains B as a ring-forming atom, O or S directly bonded to B, and a heterocyclic group in which three or five hexagonal rings are condensed. Accordingly, an organic electroluminescence device having high efficiency may be achieved.

A display device may include a pixel area and a transmission area adjacent to the pixel area, a circuit element disposed in the pixel area and including a transistor and a capacitor, a pixel electrode layer disposed in the pixel area and electrically connected to the circuit element, an emission layer disposed on the pixel electrode layer, an opposite electrode layer disposed on the emission layer, and a surface energy control layer disposed between the emission layer and the opposite electrode layer and including a perfluorinated material. The surface energy control layer may have a portion extending into the transmission area.

An organic light-emitting device and a preparation method therefor, a display panel, and a display device. The organic light-emitting device comprises an anode layer, a cathode layer, and a first light-emitting layer and an auxiliary light-emitting layer disposed between the anode layer and the cathode layer; the auxiliary light-emitting layer is located between the first light-emitting layer and the cathode layer; the first light-emitting layer comprises a first host material, a first thermally activated delayed fluorescence material, and a first fluorescence guest material; the auxiliary light-emitting layer comprises at least a second host material and a second thermally activated delayed fluorescence material. The first light-emitting layer is a super-fluorescence system, and the auxiliary light-emitting layer also forms a super-fluorescence system together with the first fluorescence guest material.

An organic electroluminescent device, a display panel, a display device, and a light emitting device are described. The organic electroluminescent device includes an anode, an electron blocking layer, a buffer layer, an organic light emitting layer, and a cathode that are sequentially stacked. The thickness of the buffer layer is in a range from 1 nm to 100 nm. The material of the buffer layer comprises a compound shown in a first chemical formula as below:

##STR00001##

The organic electroluminescence device can improve the life of the device.

The present disclosure provides a compound having a formula (I): ##STR00001##
where A represents a nitrogen-containing heteroaromatic ring substituent; and L is one or more selected from a single bond, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted C3-C8 cycloalkyl, substituted or unsubstituted C1-C8 alkoxy, substituted or unsubstituted C3-C8 heterocyclyl, substituted or unsubstituted C6-C40 aryl, and substituted or unsubstituted C4-C40 heteroaryl.

The present disclosure relates to an organic compound having a binaphthyl core and a group connected to the biphenyl core and having excellent charge mobility property, and a light emitting diode and a light emitting device having the organic compound. The organic compound can be applied into the light emitting diode by using solution process and has very deep HOMO energy level. When the organic compound is applied into a chare transfer layer, a HOMO energy level bandgap between the charge transfer layer and an emitting material layer is reduced so that holes and electrons can be injected into the emitting material layer in a balanced manner.

Presented is an organic light-emitting device including a host, a dopant, and a sensitizer.