Abstract: According to one embodiment, there is provided a compound represented by Formula (1): where Cu+ represents a copper ion, PR1R2R3 is a phosphine compound coordinating with Cu+, where R1, R2 and R3 may be the same or different, and represent a linear, branched or cyclic alkyl group having 1-6 carbon atoms or an aromatic cyclic group which may have a substituent, R4 is an electron-donating substituent and X? represents a counter ion where X is at least one selected from the group consisting of F, Cl, Br, I, BF4, PF6, CH3CO2, CF3CO2, CF3SO3 and ClO4.

Abstract: According to one embodiment, there is provided a compound represented by Formula (1): where Cu represents a copper, PR1R2R3 is a phosphine compound coordinating with Cu, where R1, R2, R3, R4 and R5 may be the same or different, and represent a linear, branched or cyclic alkyl group having 1-6 carbon atoms or an aromatic cyclic group which may have a substituent, R6, R7, R8 and R9 each independently represents a halogen atom, cyano group, nitro group, linear, branched or cyclic alkyl group having 1-6 carbon atoms or H, and X is F, Cl, Br or I.

Abstract: An organic electroluminescent display device is provided, which includes a substrate having anodes arranged thereon, a bank which defines a luminous region on the anode, an organic emitting layer formed in the luminous region, and a cathode formed on the bank and the emitting layer. A desiccant layer selectively formed on the bank with interposition of the cathode.

Abstract: According to one embodiment, there is provided an organic light-emitting diode including an anode and a cathode arranged apart from each other, and an emissive layer interposed between the anode and the cathode and including a host material and an emitting dopant. The emitting dopant includes a copper complex represented by the formula (1): where Cu+ represents a copper ion, the ligand A represents a pyridine derivative having nitrogen as a coordinate element and may have a substituent, PR1R2R3 is a phosphine compound coordinating with Cu+, where R1, R2 and R3 may be the same or different, and represent a linear, branched or cyclic alkyl group having 6 or less carbon atoms or an aromatic cyclic group which may have a substituent, and X? represents a counter ion (counterion) where X represents F, Cl, Br, I, BF4, PF6, CH3CO2, CF3CO2, CF3SO3 or ClO4.

Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a first electrode, a second electrode, a partition electrode, a luminescent layer and a voltage source. The luminescent layer includes a luminescent material emitting light rays due to an electrochemical oxidation or reduction reaction thereof. The voltage source is configured to generate a driving voltage between the first and second electrodes so as to apply first and second potentials, wherein the first and second potentials are maintained at one and opposite polarities in respect to the reference potential during a predetermined segment period respectively and are periodically reversed, each of the first and second potentials is changed first to second absolute levels during the predetermined segment period, the second absolute potential is determined depending on the gradation of input image data, and the first absolute potential is higher than the second absolute potential.

Abstract: According to one embodiment, in an organic electroluminescence device, a first substrate has a first refractive index n1. A second substrate is joined to an upper surface of the first substrate and has a second refractive index n2 higher than the first refractive index n1. Multiple wedge-shaped metal lines are buried in the second substrate in such a manner that one side of the wedge-shaped metal line is flush with an upper surface of the second substrate. A transparent electrode is formed on the upper surface of the second substrate and the multiple metal lines. An insulating layer is formed on a portion of the transparent electrode opposed to the multiple metal lines. An organic light emitting layer is formed on the transparent electrode on which the insulating layer is formed. A metal electrode is formed on the organic light emitting layer.

Abstract: According to one embodiment, there is provided an organic light-emitting diode including an anode and a cathode arranged apart from each other, an emissive layer arranged between the anode and the cathode, a hole injection layer arranged between the anode and the emissive layer and including a polyethylenedioxythiophene, and a hole-transport layer arranged between the hole injection layer and the emissive layer and including a hole-transport material. The emissive layer includes a cathode side first area including a hole transport host material, an electron transport host material and an emitting dopant, and an anode side second area including the hole transport host material and no electron transport host material.

Abstract: According to one embodiment, an organic light-emitting diode includes an anode and a cathode arranged apart from each other, an emission layer, arranged between the anode and cathode, containing a host material of polyvinyl(2,7-difluorocarbazole), a blue-emitting phosphorescent material, and an electron transport material, and a hole transport layer of polyvinylcarbazole arranged adjacent to the emission layer on an anode side.

Abstract: An organic light-emitting diode includes an anode and a cathode arranged apart from each other, and an emissive layer arranged between the anode and the cathode and containing a host material and an emitting dopant, the host material containing a plurality of indole skeletons represented by the general formula (1):

Abstract: A light-emitting device is provided, which includes a first substrate, a first pair of electrodes formed above the first substrate, a second substrate disposed apart from the first substrate, a second pair of electrodes formed above the second substrate, a selective permeable layer disposed between the first substrate and the second substrate, a first light-emitting layer disposed between the first substrate and the selective permeable layer, a second light-emitting layer disposed between the second substrate and selective permeable layer. The first light-emitting layer contains a first light-emitting material which emits light through an electrochemical oxidation or reduction thereof and a supporting salt. The second light-emitting layer contains a second light-emitting material which emits light through an electrochemical oxidation or reduction thereof and a supporting salt.

Abstract: An organic light-emitting diode includes an anode and a cathode separately arranged from each other, and an emission layer between the anode and the cathode, the emission layer including a single host material and a light-emitting material, the emission layer including, when the host material has a hole transport property, a doped region on a cathode side to which an electron transport material is doped and an undoped region on an anode side to which an electron transport material is not doped, or the emission layer including, when the host material has an electron transport property, a doped region on an anode side to which a hole transport material is doped and an undoped region on a cathode side to which a hole transport material is not doped.

Abstract: Disclosed is a method for manufacturing an organic EL light emitting display device, comprising forming an anode electrode above a substrate, forming an organic light emitting layer above the anode electrode, performing a fluorinating treatment on a surface of the organic light emitting layer, and forming a cathode electrode directly on the fluorinated surface of the organic light emitting layer.

Abstract: A light-emitting compound includes two or more carbazole skeletons each having two or more fluorine atoms at 2-, 4-, 5- and 7-positions, the carbazole skeleton represented by the formula (1): where two or more of R2, R4, R5 and R7 are F and a remainder is H.

Abstract: An organic electroluminescent display device is provided, which includes a substrate having anodes arranged thereon, a bank which defines a luminous region on the anode, an organic emitting layer formed in the luminous region, and a cathode formed on the bank and the emitting layer. A desiccant layer selectively formed on the bank with interposition of the cathode.

Abstract: A method for manufacturing an organic EL display device is provided, which includes forming a first emission layer via a hole injection transport layer over a substrate having first, second and third anode electrodes formed thereon, irradiating the second and third anode electrodes with light, to remove the first emission layer selectively to expose the hole injection transport layer on the second and third anode electrodes, forming a second emission layer, on the first emission layer and on the exposed hole injection transport layer, irradiating the third anode electrode with light to remove the second emission layer selectively, to expose the hole injection transport layer on the third anode electrode, forming a third emission layer, on the second emission layer and on the exposed hole injection transport layer, and forming a cathode electrode over the first, second and third anode electrodes via at least one of the emission layers.

Abstract: A light-emitting device is provided, which includes a first substrate, a first pair of electrodes formed above the first substrate, a second substrate disposed apart from the first substrate, a second pair of electrodes formed above the second substrate, a selective permeable layer disposed between the first substrate and the second substrate, a first light-emitting layer disposed between the first substrate and the selective permeable layer, a second light-emitting layer disposed between the second substrate and selective permeable layer. The first light-emitting layer contains a first light-emitting material which emits light through an electrochemical oxidation or reduction thereof and a supporting salt. The second light-emitting layer contains a second light-emitting material which emits light through an electrochemical oxidation or reduction thereof and a supporting salt.

Abstract: A display device includes a first substrate; a first electrode and a second electrode placed on the first substrate; a second substrate separately placed from and facing with the first substrate; a third electrode placed on the second substrate; a first layer placed between the first and second substrates, being on the first substrate, and including a luminescent material which becomes luminous in response to electrochemical oxidation or reduction; a second layer placed between the first and second substrates, being on the second substrate, and including a coloring material which discolors in response to electrochemical oxidation or reduction; and a third layer placed between the first and second layers, transmitting none of or few oxidizing species or reducing species in the luminescent material, and having ion conductivity and electron conductivity.

Abstract: Disclosed is a method for manufacturing an organic EL light emitting display device, comprising forming an anode electrode above a substrate, forming an organic light emitting layer above the anode electrode, performing a fluorinating treatment on a surface of the organic light emitting layer, and forming a cathode electrode directly on the fluorinated surface of the organic light emitting layer.

Abstract: Disclosed is a method for manufacturing an organic EL light emitting display device, comprising forming an anode electrode above a substrate, forming an organic light emitting layer above the anode electrode, performing a fluorinating treatment on a surface of the organic light emitting layer, and forming a cathode electrode directly on the fluorinated surface of the organic light emitting layer.

Abstract: A display apparatus includes a display element that includes an electrolyte solution layer containing an electrochemical luminescent material; and a voltage applying unit that applies a voltage with a waveform having a gradient for a first period and a flat top for a second period following the first period, to the electrolyte solution layer, so that the electrochemical luminescent material emits light.