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.

The present application relates to spirobifluorene derivatives of a formula (I), to the use thereof in electronic devices, and to processes for preparing said derivatives.

The present disclosure relates to an OLED display panel. With the OLED display panel, a higher luminous efficiency is achieved by selecting a thermally activated delayed fluorescent material for doping into an organic light emitting layer and applying a compound having a specific energy level to match, thereby the luminous efficiency of an organic photo electronic device is improved.

Embodiments of the present invention relate to an organic electronic device capable of ensuring high luminous efficiency, low driving voltage and high heat resistance, and improving color purity or lifespan.

The present specification relates to an ink composition comprising a solvent comprising a solvent represented by Chemical Formula 1, a solvent represented by Chemical Formula 2 and a solvent represented by Chemical Formula 3; and a charge transferring material or a light emitting material, and a method for manufacturing an organic light emitting device formed using the ink composition.

The present invention relates to a first and second organic semiconductor layer and an organic electronic device comprising the same, wherein the organic electronic device comprises an anode, a first organic semiconductor layer, a second organic semiconductor layer and a cathode; wherein a) the first organic semiconductor layer comprises: a metal dopant, and a compound of Formula (I); and b) the second organic semiconductor layer comprises at least one radialene compound.

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A fabrication method for a light-emitting device includes providing a hole functional layer disposed between a quantum dot light-emitting layer and an anode, and providing an electron functional layer disposed between the quantum dot light-emitting layer and a cathode. The hole functional layer includes a mixed material of a hole transport material and a hole injection material. A thickness of the hole functional layer being selected from a thickness range corresponding to ⅓˜⅔ of abscissa between an origin and a first positive trough in a cavity standing wave of the mixed material. The absolute value of a difference between a thickness of the electron functional layer and a thickness corresponding to a first positive crest of a cavity standing wave of an electron functional material is less than or equal to 5 nm.

Provided are an organic compound, a P-type doped material and an application thereof. The organic compound has a structure represented by Formula I, and through a molecular structure design, the organic compound has a lowest unoccupied molecular orbital energy level which is close to an anode work function and a highest occupied molecular orbital energy level of a hole transport layer, effectively promoting the generation of holes. The organic compound has a suitable molecular weight, low volatility and high stability, sufficiently satisfying an evaporation preparation process of OLED devices; moreover, the synthesis method is simple and low cost, achieving large-scale application. As an organic electroluminescent material, the organic compound can be used as the P-type doped material, especially suitable for a charge injection layer of organic electroluminescent devices, which can adjust charge balance of devices, effectively improve efficiency and lifetime of devices and reduce drive voltage and energy consumption.

A display panel and a mobile terminal are disclosed. A light-emitting device layer of the display panel includes a plurality of first light-emitting units, a plurality of first compensation layers disposed corresponding to the first light-emitting units. The first compensation layers are located on at least one side of the first light-emitting units. A hole transport rate of the first compensation layers is greater than a hole transport rate of a hole transport layer, and/or an electron transport rate of the first compensation layers is greater than an electron transport rate of an electron transport layer.

A composition, an interlayer manufactured therefrom, and an apparatus including the interlayer are provided. The composition includes a polymer compound represented by Formula 1, a non-arylamine-based compound represented by Formula 2, and a solvent: ##STR00001##
Z.sub.o.  <Formula 2> The substituents in Formulae 1 and 2 may be understood as described in connection with the detailed description.