The present invention relates to spiro compounds containing electron-conducting groups and to electronic devices, in particular organic electroluminescent devices, comprising these compounds.

Provided is a novel heterocyclic compound of Chemical Formula 1: ##STR00001##
and to an organic light emitting device including the same.

The present disclosure relates to a display panel and a manufacturing method thereof, and a display device. The display panel includes a plurality of pixel units. The pixel unit includes a red sub-pixel, a green sub-pixel and a blue sub-pixel. The red sub-pixel, the green sub-pixel and the blue sub-pixel each include a cathode, an electron transport layer, a quantum dot luminescent layer, a hole function layer and an anode that are stacked. The electron transport layer is made of Mg-doped ZnO nanoparticles, and a Mg doping concentration in the electron transport layer of the red sub-pixel, a Mg doping concentration in the electron transport layer of the green sub-pixel and a Mg doping concentration in the electron transport layer of the blue sub-pixel decrease successively.

An organic electroluminescence device having a cathode; an anode; and an emitting layer disposed between the cathode, wherein a first layer in an electron-transporting zone disposed between the emitting layer and the cathode contains a first compound and a second compound, the electron mobility μ.sub.1 of the first compound is 1.0×10.sup.−5 cm.sup.2/Vs or lower, and the second compound is one or more selected from the group consisting of compounds represented by each of the following formulas (11), (12), and (13), provided that the first compound and the second compound are different compounds.

##STR00001##

The present invention relates to a formulation containing at least one organic functional material and at least four different organic solvents, a first organic solvent A, a second organic solvent B, a third organic solvent C, and a fourth organic solvent D, wherein the first organic solvent A comprises a group, which is capable of receiving or giving a hydrogen bonding, the second organic solvent B has a boiling point in the range from 50 to 350° C., the third organic solvent C has a boiling point in the range from 100 to 300° C., and the fourth organic solvent D has a boiling point in the range from 200 to 400° C., is present in an amount from 0.01 to 1 vol.-% and has a viscosity of ≥15 mPas, the solubility of the at least one organic functional material in the second organic solvent B and in the fourth organic solvent D is ≥5 g/l, the boiling point of the third organic solvent C is at least 10° C. lower than the boiling point of the second organic solvent B; and the boiling point of the fourth organic solvent D is at least 10° C. higher than the boiling point of the second organic solvent B; as well as to electroluminescent devices prepared by using these formulations.

By providing a novel polycyclic aromatic amino compound having an amino substituent and having a plurality of aromatic rings linked via a boron atom, an oxygen atom, or the like, for example, as in the following formula, a selection range of a material for an organic EL element is widened. In addition, by using the novel polycyclic aromatic amino compound as a material for an organic electroluminescent element, an excellent organic EL element is provided ##STR00001##

The present invention relates to an organic electronic device comprising a semiconductor layer which comprises a compound of formula (1).

The present invention relates to an organic compound, an organic light-emitting diode including the organic compound, and a display device including the organic light-emitting diode. More particularly, the present invention relates to an organic compound including a compound presented by Chemical Formula 1 and being capable of improving luminous efficacy, thermal stability, and lifespan properties, an organic light-emitting diode including the organic compound, and a display device including the organic light-emitting diode.

The present invention relates to an organic compound, an organic light-emitting diode including the organic compound, and a display device including the organic light-emitting diode. More particularly, the present invention relates to an organic compound including a compound represented by Chemical Formula 1 and being capable of improving luminous efficacy, thermal stability, and lifespan properties; an organic light-emitting diode including the organic compound; and a display device including the organic light-emitting diode.

The present invention relates to an organic electroluminescent device, particularly to an organic light emitting diode (OLED) including an ETL stack of at least two electron transport layers, wherein the first electron transport layer comprises a first electron transport matrix compound and the second electron transport layer comprises second electron transport matrix compound and a redox n-dopant, and a device comprising the OLED.