Abstract: A light-emitting element is provided having a layered structure composed of at least a light-emitting layer having a light-emitting region and a reflective layer for reflecting light emitted from the light-emitting region. Light emitted from the light-emitting region is extracted from a light-extracting surface distanced from the light-emitting region. A light-scattering portion is present in a part of the reflective layer.

Abstract: A light-emitting element is provided having a layered structure composed of at least a light-emitting layer having a light-emitting region and a reflective layer for reflecting light emitted from the light-emitting region. Light emitted from the light-emitting region is extracted from a light-extracting surface distanced from the light-emitting region. A light-scattering portion is present in a part of the reflective layer.

Abstract: A light-emitting element is provided having a layered structure composed of at least a light-emitting layer having a light-emitting region and a reflective layer for reflecting light emitted from the light-emitting region. Light emitted from the light-emitting region is extracted from a light-extracting surface distanced from the light-emitting region. A light-scattering portion is present in a part of the reflective layer.

Abstract: A light-emitting element having at least a light-emitting region arranged between a pair of electrodes is provided, in which the light-emitting region contains either (A) a light-emitting material, a compound capable of sustaining the charge transport, and a heavy metal as a mixture, or (B) a compound that is capable of sustaining the charge transport and that includes both of a portion for contributing to the charge transport and a portion for contributing to the light emission within the compound, and a heavy metal as a mixture. A method for producing the light-emitting element, and a display device in which a plurality of the light-emitting elements are used, are provided also.

Abstract: A light-emitting element is provided having a layered structure composed of at least a light-emitting layer having a light-emitting region and a reflective layer for reflecting light emitted from the light-emitting region. Light emitted from the light-emitting region is extracted from a light-extracting surface distanced from the light-emitting region. A light-scattering portion is present in a part of the reflective layer.

Abstract: A thin film EL device having high electroluminescent efficiency, a low operating voltage, and a long lifetime. A thin film EL device of the present invention uses, as a luminescent layer, a charge-transport luminescent material that has, within a molecule, a portion contributing to charge transport and a portion contributing to luminescence where at least two molecular orbitals contributing to luminescent transition are localized.

Abstract: A light-emitting element having at least a light-emitting region arranged between a pair of electrodes is provided, in which the light-emitting region contains either (A) a light-emitting material, a compound capable of sustaining the charge transport, and a heavy metal as a mixture, or (B) a compound that is capable of sustaining the charge transport and that includes both of a portion for contributing to the charge transport and a portion for contributing to the light emission within the compound, and a heavy metal as a mixture. A method for producing the light-emitting element, and a display device in which a plurality of the light-emitting elements are used, are provided also.

Abstract: A light-emitting element is provided having a layered structure composed of at least a light-emitting layer having a light-emitting region and a reflective layer for reflecting light emitted from the light-emitting region. Light emitted from the light-emitting region is extracted from a light-extracting surface distanced from the light-emitting region. A light-scattering portion is present in a part of the reflective layer.

Abstract: An organic light-emitting device 10 has the constitution in which an emission region 3 between an anode 2 and a cathode 4 is laminated on a substrate 1. The emission region 3 includes polymer 3A, luminous molecules 3G which are material contributable to emission, and charge transport material 3F. The luminous molecules 3G and the charge transport material 3F are high in concentration at a side close to the cathode 4 and low in concentration at a side close to the anode 2 in a layer thickness direction of the emission region 3. The organic light-emitting device can be formed by luminous material, or luminous material and charge transport material being penetrated into polymer, or polymer in which charge transport material is dispersed, thus providing highly improved luminous efficiency and at the same time facilitating the patterning.

Abstract: A thin film EL device is disclosed which includes a hole-injecting electrode, an electron-injecting electrode paired with the hole-injecting electrode, and a functional layer provided between the hole-injecting electrode and the electron-injecting electrode and emitting light by application of an electric field produced by the electrodes. The electron-injecting electrode contains at least two or more different metals having different work functions and a capturing substance for capturing a low work function metal, which is a metal other than a highest work function metal among the above-described metals, in its ionic state. This configuration prevents deterioration of the low work function metal, increasing the luminance and lifetime of the device.

Abstract: There are provided an organic electroluminescence element which is excellent in visibility and which can maintain a light emission performance with a high degree of efficiency, an image forming apparatus which is excellent in visibility and which can maintain a light emission performance with a high degree of efficiency, and a portable terminal unit which is lightweight and which has a long use life. The organic electroluminescence element incorporates at least, on a substrate, an anode for injecting holes, a luminous layer having a light emitting zone, a cathode for injecting electrons, wherein light radiated from the luminous layer is extracted through a surface opposed to the substrate, and an inverted V-like structure higher than the luminous layer is formed on at least a part of an element forming surface of the substrate.

Abstract: The present invention provides a thin film EL device having high electroluminescent efficiency, a low operating voltage, and a long lifetime. A thin film EL device of the present invention uses, as a luminescent layer, a charge-transport luminescent material that has, within a molecule, a portion contributing to charge transport and a portion contributing to luminescence where at least two molecular orbitals contributing to luminescent transition are localized.

Abstract: A blue luminescent material with excellent thermal stability and long-term stability, a light-emitting element utilizing this material, and a device utilizing this light-emitting element are provided. In addition, the present invention provides a light-emitting element that has good color purity, does not reduce current efficiency in high luminance regions, and does not degrade lifetime characteristics. The luminescent material is a polynuclear metal complex compound having a pyrazabole structure.

Abstract: A thin film EL device having high electroluminescent efficiency, a low operating voltage, and a long lifetime. The thin film EL device uses, as a luminescent layer, a charge-transport luminescent material that has, within a molecule, a portion contributing to charge transport and a portion contributing to luminescence where at least two molecular orbitals contributing to luminescent transition are localized.

Abstract: A light-emitting element is provided having a layered structure composed of at least a light-emitting layer having a light-emitting region and a reflective layer for reflecting light emitted from the light-emitting region. Light emitted from the light-emitting region is extracted from a light-extracting surface distanced from the light-emitting region. A light-scattering portion is present in a part of the reflective layer.

Abstract: A light-emitting device includes a plurality of light-emitting elements provided on a base material, each of the light-emitting elements including a pair of electrodes, and a light-emitting layer interposed between the electrodes. Light-emitting surfaces of the light-emitting elements are arranged along a standing direction with respect to the base material. The light-emitting elements are formed into a belt shape, a strap shape, a cylindrical shape or a columnar shape or formed to be porous, thereby increasing a surface area of the light-emitting element drastically so as to reduce a current amount per unit area, thus providing a light source with an extended lifetime even in a high luminance application.

Abstract: There are provided an organic electroluminescence element which is excellent in visibility and which can maintain a light emission performance with a high degree of efficiency, an image forming apparatus which is excellent in visibility and which can maintain a light emission performance with a high degree of efficiency, and a portable terminal unit which is lightweight and which has a long use life. The organic electroluminescence element incorporates at least, on a substrate, an anode for injecting holes, a luminous layer having a light emitting zone, a cathode for injecting electrons, wherein light radiated from the luminous layer is extracted through a surface opposed to the substrate, and an inverted V-like structure higher than the luminous layer is formed on at least a part of an element forming surface of the substrate.

Abstract: The invention provides a luminescent material that has a wide optimum concentration range, makes the controlling of the concentration easy in mass production processes, and makes it easy to obtain uniformity and reproducibility within the device or between the devices The invention also provides a light-emitting device using the luminescent material and a system using the light-emitting device. In addition, a light-emitting device is provided which shows good color purity, does not reduce current efficiency in the high luminance region, and does not degrade the lifetime characteristics. The luminescent material includes an exciton-forming substance and a luminescent substance. The exciton-forming substance is such that the energy level difference between the excited singlet state and the excited triplet state is 2 eV or lower.

Abstract: A thin film EL device is disclosed which includes a hole-injecting electrode, an electron-injecting electrode paired with the hole-injecting electrode, and a functional layer provided between the hole-injecting electrode and the electron-injecting electrode and emitting light by application of an electric field produced by the electrodes. The electron-injecting electrode contains at least two or more different metals having different work functions and a capturing substance for capturing a low work function metal, which is a metal other than a highest work function metal among the above-described metals, in its ionic state. This configuration prevents deterioration of the low work function metal, increasing the luminance and lifetime of the device.

Abstract: The present invention provides a thin film EL device having high electroluminescent efficiency, a low operating voltage, and a long lifetime. A thin film EL device of the present invention uses, as a luminescent layer, a charge-transport luminescent material that has, within a molecule, a portion contributing to charge transport and a portion contributing to luminescence where at least two molecular orbitals contributing to luminescent transition are localized.