Abstract: A heterocyclic compound is represented by Formula 1. An organic light emitting device includes a first electrode, a second electrode and an organic layer between the first and second electrodes. The organic layer includes the heterocyclic compound. An organic light-emitting display apparatus includes the organic light-emitting device and a transistor including a source, a drain, a gate and an active layer. The source or the drain is electrically connected to the first electrode of the organic light-emitting device.

Abstract: An organic electroluminescent element comprising: an anode; a cathode; a luminescent layer provided between the anode and the cathode; and a hole injecting and transporting layer provided between the anode and the cathode and adjacent to the luminescent layer, wherein at least the luminescent layer is formed by a wet film forming method, and contains a charge transporting material and a luminescent material, in which the charge transporting material contains a hole transporting material and an electron transporting material each having a specific partial structure, and the luminescent material contains at least three kinds of materials and has an emission spectrum having at least two kinds of emission maximums.

Abstract: A fluorene-based compound represented by Formula 1 below and an organic light-emitting device (OLED) including the fluorene-based compound. wherein R1 to R3, R10 to R17 and a, b, c, d, e, and f are defined as in the specification.

Abstract: The present invention provides a novel compound that is capable of largely improving a life span, efficiency, electrochemical stability and thermal stability of an organic light emitting device, and an organic light emitting device in which the compound is included in an organic compound layer.

Abstract: A phosphorescent compound is disclosed. The phosphorescent compound represented by the following Chemical Formula 1, where X, Y, and Z are each selected from the group consisting of carbon and nitrogen, and when x, y, and z are all carbon, R is any one selected from the group consisting of carbazole, ?-carboline, ?-carboline, ?-carboline, fluorine, dibenzothiophene, dibenzofuran, triphenylsilane, tetraphenylsilane, pyridine, quinoline, isoquinoline, pyrimidine, diphenylphosphineoxide, and substituents thereof.

Abstract: A hole transport polymeric compound and a polymer light emitting diode using the same. The hole transport polymeric compound includes a hole transport material, a thermal cross-linking agent containing an ethynyl group, and a compound represented by [Formula 1], and can be applied to a polymer light emitting diode. In addition, the hole transport polymeric compound has excellent hole transport capabilities and has stability in solvents so as to be insoluble in a solvent used upon stacking other organic layers and blocking electrons well.

Abstract: A top-emitting organic electroluminescence device including sequentially a first electrode, one or more organic layers comprising an emitting layer, a second electrode and a capping layer, wherein the capping layer comprises a compound represented by the following formula (1):

Abstract: A heterocyclic compound represented by Formula 1 below and an organic light-emitting device including the heterocyclic compound: wherein R1 to R12 are defined as in the specification.

Abstract: An organic electroluminescent device includes a pair of electrodes; and an organic layer between the pair of electrodes, which includes a light-emitting layer, wherein the organic layer contains a compound represented by the following formula (I); and the light-emitting layer contains a iridium complex phosphorescent material: wherein R1, R2, R3, R4, R5, R6, R7 and R8 each represents a hydrogen atom or a substituent, and contiguous substituents of R1 to R8 may be bonded to each other to form a condensed ring; R9 represents an alkyl group, an alkenyl group, an aryl group, a hetero-aryl group, or a silyl group, and each of which group may be substituted with a substituent; and at least one of R1 to R9 represents a deuterium atom or a substituent containing a deuterium atom.

Abstract: A heterocyclic compound is represented by Formula 1. An organic light emitting device includes a first electrode, a second electrode and an organic layer between the first and second electrodes. The organic layer includes the heterocyclic compound. An organic light-emitting display apparatus includes the organic light-emitting device and a transistor including a source, a drain, a gate and an active layer. The source or the drain is electrically connected to the first electrode of the organic light-emitting device.

Abstract: A highly efficient light-emitting element capable of providing a plurality of emission colors is provided, which does not easily deteriorate and can minimize a decrease in external quantum efficiency even when a light-emitting layer has a stacked structure. A light-emitting device, an electronic device, and a lighting device which have low power consumption and long lifetime are provided. A light-emitting element includes a plurality of light-emitting layers stacked between a pair of electrodes. The light-emitting layers each contain a host material and a guest material. The guest materials of the light-emitting layers are substances which have different HOMO levels but have substantially the same LUMO levels and emit light of different colors. A light-emitting device, an electronic device, and a lighting device are fabricated using the light-emitting element.

Abstract: Compounds according to Formula 1 may be used as host materials, hole-transfer materials, hole-injecting materials, or for other purposes in electronic devices such as in organic light-emitting devices.

Abstract: As an organic electroluminescence device that has an excellent emission characteristic, suppresses a change in chromaticity when driving at a high temperature and has excellent durability, the organic electroluminescence device includes on a substrate a pair of electrodes and a light emitting layer disposed between the electrodes, in which the light emitting layer contains a compound represented by the following Formula (1) and a specific metal complex is provided. (Cz)p-L-(A)q??(1) (In Formula (1), Cz represents a substituted or unsubstituted arylcarbazolyl group or a substituted or unsubstituted carbazolylaryl group. L represents a single bond, a substituted or unsubstituted arylene group, a substituted or unsubstituted cycloalkylene group or a substituted or unsubstituted aromatic heterocyclic ring. A is a substituted or unsubstituted nitrogen-containing aromatic heterocyclic six-membered ring, and each of p and q independently represent an integer of 1 to 6.

Abstract: Provided is an organic light-emitting device including a plurality of pixels, each including a first sub-pixel, a second sub-pixel, and a third sub-pixel having different colors from each other. Each of the pixels includes a substrate, a first electrode layer on the substrate, a first light-emitting layer disposed on the first electrode in the first, second and third sub-pixels, an auxiliary layer disposed on the first light-emitting layer in the second and third sub-pixels, a second light-emitting layer disposed on the auxiliary layer in the second sub-pixel, a third light-emitting layer disposed on the auxiliary layer in the third sub-pixel, and a second electrode layer on the first, second, and third light-emitting layers.

Abstract: The present adventure relates to novel compounds of the formula (I) or (II), to the use of the compounds in electronic devices, to a process for the preparation of the compounds, and to electronic devices comprising the compounds, preferably as matrix materials or as electron-transport materials.

Abstract: Provided is an organic electroluminescent device (organic EL device) which exhibits improved luminous efficiency, ensures sufficient driving stability, and has a simple configuration. The organic electroluminescent element includes an anode, a plurality of organic layers, and a cathode laminated on a substrate, and contains a carbazole compound represented by the general formula (1) in at least one layer selected from the group consisting of a emitting layer, a hole-transporting layer, and an electron-blocking layer. In general formula (1), L represents an m-valent aromatic hydrocarbon group or aromatic heterocyclic group, R's each represent hydrogen, an alkyl group, or a cycloalkyl group, m represents an integer of 1 to 3, and n's each represent an integer of 1 to 4, provided that at least one n represents an integer of 2 to 4, and at least one specific structure represented by the formula (1a) is present in the formula.

Abstract: Luminescent materials including donor-acceptor compounds with a high triplet energy heteropolyaromatic system, namely, dibenzofuran, dibenzothiophene and dibenzoselenophene with one or multiple nitrogens in the ring as the electron acceptor for use as emitters in organic light emitting diodes is disclosed.

Abstract: The present invention relates to compounds of the formula (1) and formula (2) which are suitable for use in electronic devices, in particular in organic electroluminescent devices.

Abstract: Condensed-cyclic organic compounds, synthetic methods for preparing the same and an organic light-emitting diode including the same are presented. The subject polycyclic triarylamines are prepared via a series of substitution and cyclization reactions.

Abstract: This invention provides a luminescent composition comprising a polymer and at least one phosphorescent compound, characterized in that the electronic conjunction chain coefficient Ze of the main repeating minimum unit of the polymer falls within the following range: 0<Ze?2.00 (1) wherein the electronic conjunction chain coefficient Ze is defined as a slope obtained by linear approximation of function Tm=Tm(1/ne) by the least square method wherein ne represents the number of conjugated electrons contained in repeating minimum units; and Tm represents, for m-mer obtained by bonding repeating minimum units, the lowest triplet excitation energy in each m-mer when the number m is varied from 1 to 3 by one by one. Here in the number of conjugated electrons, only the conjugated electrons present in the main chain of the repeating minimum units are taken into consideration, provided that, when there are a plurality of main repeating minimum units, the minimum Ze is used.