Abstract: According to principals as disclosed herein an organic, light emitting diode assembly is provided having a first electrode. An electron injection layer is adjacent to the first electrode. A first electron transport layer composed of inorganic material is adjacent to the electron injection layer. A second electron transport layer composed of organic material is adjacent to the first electron transport layer and in contact with an organic light emitting material layer. The organic light emitting material layer is in direct, abutting contact with the second electron transport layer. A hole transport layer is adjacent to the organic light emitting material layer and a second electrode is adjacent to the hole transport layer.

Abstract: The present disclosure relates to an inorganic light emitting diode (LED) in which an emitting material layer (EML) includes inorganic luminescent particles and a cyclic boronic acid mixed with the inorganic luminescent particles and an inorganic light emitting device including the inorganic LED. The cyclic boronic acid in the EML allows surface defects on the inorganic luminescent particle to be minimized, and stabilizes the particles. As excitons by recombining holes and electrons in the stabilized luminescent particles become stabilized, the particles show improved exciton generation efficiency. The cyclic boronic acid enables the inorganic LED and the inorganic light emitting device to achieve lower driving voltages and improved luminous efficiency.

Abstract: A quantum-dot (QD) film, which includes a first QD layer including a first QD; and a first protection layer on the first QD layer and including a first organic compound, wherein the first organic compound includes at least two thiol groups, and a first one of the at least two thiol groups is anchored to the first QD, and an LED package, a QD light emitting diode and a display device including the QD film are provided.

Abstract: The present disclosure relates to a light-emitting diode (LED) in which an organic compound including an imidazolium-based cationic moiety and an amine-based anionic moiety substituted with a strong electron-withdrawing group such as a sulfonyl group or a cyano group is applied to a hole transfer layer, and a light-emitting device. By applying the organic compound according to the present disclosure to the hole transfer layer, an energy barrier between the hole transport layer and an emitting material layer is removed, and an LED having improved hole transport properties can be designed. Therefore, it is possible to realize and manufacture an LED and a light-emitting device, driven at a low voltage and having improved luminous efficiency.

Abstract: Compounds useful dopants for light emitting diodes and light emitting display devices are disclosed. The compounds have the following structure (Formula I): wherein R1a, R1b, R2a, R2b, Z1, Z2, X and Y are as defined herein. Light emitting diodes including the compounds of Formula I, light emitting devices including the same as well as methods associated with preparation and use of such compounds and devices are also provided.

Abstract: The present disclosure relates to an inorganic light emitting diode (LED) in which an emitting material layer (EML) includes inorganic luminescent particles and a cyclic boronic acid mixed with the inorganic luminescent particles and an inorganic light emitting device including the inorganic LED. The cyclic boronic acid in the EML allows surface defects on the inorganic luminescent particle to be minimized, and stabilizes the particles. As excitons by recombining holes and electrons in the stabilized luminescent particles become stabilized, the particles show improved exciton generation efficiency. The cyclic boronic acid enables the inorganic LED and the inorganic light emitting device to achieve lower driving voltages and improved luminous efficiency.

Abstract: A quantum-dot (QD) light emitting diode and a quantum-dot light emitting display device are disclosed. The QD light emitting diode includes first and second electrodes facing each other; a QD emitting material layer between the first and second electrodes and including a QD; a first charge auxiliary layer between the first electrode and the QD emitting material layer; and a second charge auxiliary layer between the QD emitting material layer and the second electrode, wherein the QD includes a core, a shell surrounding the core and a ligand contacting a portion of the shell, and wherein the first charge auxiliary layer contacts the ligand, and the second charge auxiliary layer contacts the shell.

Abstract: A light emitting diode includes a first electrode and a second electrode facing the first electrode. The light emitting diode further includes an emitting material layer (EML) disposed between the first electrode and the second electrode, and an electron transport layer (ETL) adjacent the EML. The ETL includes a plurality of first inorganic particles having a first average particle size, and a plurality of second inorganic particles having a second average particle size greater than the first average particle size. The plurality of first inorganic particles may also have a first energy bandgap, and a plurality of second inorganic particles may also have a second energy bandgap smaller than the first energy bandgap.

Abstract: A quantum-dot (QD) film, which includes a first QD layer including a first QD; and a first protection layer on the first QD layer and including a first organic compound, wherein the first organic compound includes at least two thiol groups, and a first one of the at least two thiol groups is anchored to the first QD, and an LED package, a QD light emitting diode and a display device including the QD film are provided.

Abstract: A quantum-dot (QD) light emitting diode and a quantum-dot light emitting display device are disclosed. The QD light emitting diode includes first and second electrodes facing each other; a QD emitting material layer between the first and second electrodes and including a QD; a first charge auxiliary layer between the first electrode and the QD emitting material layer; and a second charge auxiliary layer between the QD emitting material layer and the second electrode, wherein the QD includes a core, a shell surrounding the core and a ligand contacting a portion of the shell, and wherein the first charge auxiliary layer contacts the ligand, and the second charge auxiliary layer contacts the shell.

Abstract: The present invention provides an organic compound for an organic light emitting diode. The organic compound is represented by: The organic compound is capable of reducing a driving voltage of an organic light emitting diode by an excellent charge transporting property. The present invention also provides an organic light emitting diode and an organic light emitting display device including the organic compound.

Abstract: Compounds useful dopants for light emitting diodes and light emitting display devices are disclosed. The compounds have the following structure (Formula I): wherein R1a, R1b, R2a, R2b, Z1, Z2, X and Y are as defined herein. Light emitting diodes including the compounds of Formula I, light emitting devices including the same as well as methods associated with preparation and use of such compounds and devices are also provided.

Abstract: According to principals as disclosed herein an organic, light emitting diode assembly is provided having a first electrode. An electron injection layer is adjacent to the first electrode. A first electron transport layer composed of inorganic material is adjacent to the electron injection layer. A second electron transport layer composed of organic material is adjacent to the first electron transport layer and in contact with an organic light emitting material layer. The organic light emitting material layer is in direct, abutting contact with the second electron transport layer. A hole transport layer is adjacent to the organic light emitting material layer and a second electrode is adjacent to the hole transport layer.

Abstract: A light emitting diode includes a first electrode and a second electrode facing the first electrode. The light emitting diode further includes an emitting material layer (EML) disposed between the first electrode and the second electrode, and an electron transport layer (ETL) adjacent the EML. The ETL includes a plurality of first inorganic particles having a first average particle size, and a plurality of second inorganic particles having a second average particle size greater than the first average particle size. The plurality of first inorganic particles may also have a first energy bandgap, and a plurality of second inorganic particles may also have a second energy bandgap smaller than the first energy bandgap.

Abstract: The present disclosure relates to a light-emitting diode (LED) in which an organic compound including an imidazolium-based cationic moiety and an amine-based anionic moiety substituted with a strong electron-withdrawing group such as a sulfonyl group or a cyano group is applied to a hole transfer layer, and a light-emitting device. By applying the organic compound according to the present disclosure to the hole transfer layer, an energy barrier between the hole transport layer and an emitting material layer is removed, and an LED having improved hole transport properties can be designed. Therefore, it is possible to realize and manufacture an LED and a light-emitting device, driven at a low voltage and having improved luminous efficiency.

Abstract: The present invention provides an organic compound for an organic light emitting diode. The organic compound is represented by: The organic compound is capable of reducing a driving voltage of an organic light emitting diode by an excellent charge transporting property. The present invention also provides an organic light emitting diode and an organic light emitting display device including the organic compound.

Abstract: A red phosphorescent compound includes a host material being capable of transporting an electron or a hole; and a dopant material represented by following Formula 1: wherein the is one of and each of R1 to R4 is one of the group consisting of hydrogen atom (H), C1 to C6 substituted or non-substituted alkyl group, C1 to C6 substituted or non-substituted alkoxy group, and halogen atom.

Abstract: A blue fluorescent compound includes a host material being capable of transporting an electron or a hole; and a dopant material represented by following Formula 1: [Formula 1] wherein each of the R1, the R2, the R3, the R4, and the R5 is selected from hydrogen, fluorine, C1-C6 substituted or non-substituted alkyl group, C6-C30 substituted or non-substituted aromatic group, and C6-C30 substituted or non-substituted heterocyclic group, and two of the R1, the R2, the R3, the R4 and the R5 are fluorine and wherein the R6 is selected from the C6-C30 substituted or non-substituted aromatic group, and the C6-C30 substituted or non-substituted heterocyclic group.

Abstract: The present invention relates to a blue fluorescence compound which enables to achieve high brightness, a long lifetime and high efficiency; and an organic electroluminescence device thereof.

Abstract: A host material is disclosed. The host material, as a compound which is represented by the following formula 1, has a chemical structure in which nitrogen and silicon atoms are chemically and directly bonded to each other. Wherein the “a” is one selected from a material group which includes N, S, O, SO2 and NSiG1G2G3, and the “G1, G2 and G3” each become one of a hydrogen, and aromatic, heterocyclic and aliphatic groups which are or not substituted, respectively.