An organic electroluminescence device comprising: an anode, a cathode, and an emitting region between the anode and the cathode, wherein the emitting region comprises a first emitting layer and a second emitting layer, the first emitting layer and the second emitting layer are directly adjacent to each other, the first emitting layer is between the anode and the second emitting layer, and one of the first emitting layer and the second emitting layer comprises a compound having at least one deuterium atom.

A display apparatus includes a substrate, a first electrode, a second electrode to be adjacent to the first electrode, a first emission layer on the first electrode, a second emission layer on the second electrode, a first low adhesive pattern between a center of the first emission layer and a center of the second emission layer in a plan view, a first negative charge generation layer continuously disposed to cover the first emission layer, the second emission layer, and the first low adhesive pattern, a first positive charge generation layer on the first negative charge generation layer, a first upper emission layer on the first positive charge generation layer and overlapping the first emission layer, a second upper emission layer on the first positive charge generation layer and overlapping the second emission layer, and a common electrode on the first upper emission layer and the second upper emission layer.

Provided is a light-emitting diode and a method for preparing the same. The light-emitting diode includes an anode, a hole transport layer, a perovskite light-emitting layer, an electron transport layer and a cathode stacked in sequence, in which the perovskite light-emitting layer includes a first sublayer and a second sublayer stacked in sequence, with a material for forming the first sublayer including an inorganic perovskite material, and with a material for forming the second sublayer being an organic perovskite material.

An opto-electronic device having a plurality of layers, comprising a first capping layer (CPL) comprising a first CPL material and disposed in a first emissive region configured to emit photons having a first wavelength spectrum that is characterized by a first onset wavelength; and a second CPL comprising a second CPL material and disposed in a second emissive region configured to emit photons having a second wavelength spectrum that is characterized by a second onset wavelength; wherein at least one of the first CPL and the first CPL material (CPL(m)1) exhibits a first absorption edge at a first absorption edge wavelength that is shorter than the first onset wavelength; and at least one of the second CPL and the second CPL material (CPL(m)2) exhibits a second absorption edge at a second absorption edge wavelength that is shorter than the second onset wavelength.

An organic electric element according to an embodiment of the present disclosure includes a first electrode, a second electrode, and an organic material layer formed between the first electrode and the second electrode. The organic material layer includes a plurality of emission-auxiliary layers, and the HOMO energy levels of the plurality of emission-auxiliary layers are limited to specific conditions in relation to the neighboring organic material layers, thereby the driving voltage, the luminous efficiency and the life time of the organic electric element can be improved.

An organic electroluminescence device includes: an emitting region provided between a cathode and an anode; and a hole transporting zone provided between the anode and the emitting region, in which the hole transporting zone includes at least a first anode side organic layer and a second anode side organic layer, the first anode side organic layer is in direct contact with the second anode side organic layer, a total film thickness of the hole transporting zone is in a range from 20 nm to 80 nm, the first anode side organic layer contains no compound contained in the second anode side organic layer, the first anode side organic layer contains a first organic material and a second organic material, the first organic material is different from the second organic material, and a content of the first organic material in the first anode side organic layer is less than 50 mass %.

An organic light-emitting diode comprising an organic layer sequence, a radiation exit area and an encapsulation. The organic layer sequence comprises at least one radiation-emitting region which generates electromagnetic radiation in the spectral range from infrared radiation to UV radiation during operation. The radiation exit area is structured, so that the electromagnetic radiation has a directional emission profile. The encapsulation forms a seal of the organic layer sequence against environmental influences.

A novel heterocyclic compound is provided. A novel heterocyclic compound that can be used for a light-emitting element is provided. A novel heterocyclic compound that can improve the reliability of a light-emitting element when used for a light-emitting element is provided. A light-emitting element, a light-emitting device, an electronic appliance, or a lighting device which includes the novel heterocyclic compound and is highly reliable is provided. One embodiment of the present invention is a heterocyclic compound represented by a general formula (G0). In the general formula (G0), A represents a dibenzo[f,h]quinoxalinyl group, B represents a substituted or unsubstituted fluorenyl group, and Ar represents a substituted or unsubstituted arylene group having 6 to 25 carbon atoms.

A—Ar—B   (G0)

A display device according to the present disclosure has a resonator structure in which a light reflector and a semi-transmissive plate are disposed at a distance that differs for each luminescent color. In this resonator structure, a light-emitting function layer including a light-emitting layer, a transparent cathode electrode, and a protective film that protects the cathode electrode are laminated in order between the light reflector and the semi-transmissive plate. In addition, the semi-transmissive plate is formed on the protective film.

An organic light-emitting display apparatus, including: a first electrode disposed on the substrate; a pixel defining layer covering an edge of the first electrode; a residual layer disposed on the first electrode and the pixel defining layer, the residual layer comprising a fluoropolymer; a first organic functional layer comprising a first light emitting layer disposed on the residual layer on the first electrode; and a second electrode disposed on the first organic functional layer.