Abstract: A color conversion film that absorbs light from an organic electroluminescent part emitting blue-green light and converts the light to visible light at a longer wavelength. The color conversion film includes two different dyes. A first dye is a polymer dye with an average molecular weight of 1000 to 1,000,000 that absorbs light incident on the color conversion film and transfers the energy of the light to a second dye. The second dye is a dye that receives the energy from the first dye and emits light. With a multicolor-emitting, organic electroluminescent device including the color conversion film, it is possible to achieve excellent conversion efficiency without increasing the thickness of the color conversion film as in a conventional device using a binder resin. Such an organic electroluminescent device may include as well a pair of electrodes at least one of which is a transparent electrode, and an organic electroluminescent layer sandwiched between the electrodes.

Abstract: A color conversion film that absorbs light from an organic electroluminescent part emitting blue-green light and converts the light to visible light at a longer wavelength. The color conversion film includes two different dyes. A first dye is a polymer dye with an average molecular weight of 1000 to 1,000,000 that absorbs light incident on the color conversion film and transfers the energy of the light to a second dye. The second dye is a dye that receives the energy from the first dye and emits light. With a multicolor-emitting, organic electroluminescent device including the color conversion film, it is possible to achieve excellent conversion efficiency without increasing the thickness of the color conversion film as in a conventional device using a binder resin. Such an organic electroluminescent device may include as well a pair of electrodes at least one of which is a transparent electrode, and an organic electroluminescent layer sandwiched between the electrodes.

Abstract: A color conversion film is disclosed that absorbs light from an organic electroluminescent part emitting blue-green light and converts the light to visible light at a longer wavelength. The color conversion film includes two different dyes. A first dye is a polymer dye with an average molecular weight of 1000 to 1,000,000 that absorbs light incident on the color conversion film and transfers the energy of the light to a second dye. The second dye is a dye that receives the energy from the first dye and emits light. With a multicolor-emitting, organic electroluminescent device including the color conversion film, it is possible to achieve excellent conversion efficiency without increasing the thickness of the color conversion film as in a conventional device using a binder resin.

Abstract: An organic light emitting element includes a pair of electrodes at least one of which has visible light transmittance; and an organic EL layer provided between the pair of electrodes. The organic EL layer includes at least an organic light emitting layer that emits light when a voltage is applied between the pair of electrodes. The organic light emitting layer includes an electron transport host material; and at least first and second guest materials. Each of the first and second guest materials has an emission peak in a blue to blue-green color region. The electron transport host material has an ionization potential (IPH) and an electron affinity (AFH), and the first guest material has an ionization potential (IPG1) and an electron affinity (AFG1) that satisfy Expression (1): IPH?IPG1 and AFH<AFG1 (1). The organic light emitting element has significantly improved efficiency without any influence on driving voltage.

Abstract: An organic light emitting element includes a pair of electrodes at least one of which has visible light transmittance; and an organic EL layer provided between the pair of electrodes. The organic EL layer includes at least an organic light emitting layer that emits light when a voltage is applied between the pair of electrodes. The organic light emitting layer includes an electron transport host material; and at least first and second guest materials. Each of the first and second guest materials has an emission peak in a blue to blue-green color region. The electron transport host material has an ionization potential (IPH) and an electron affinity (AFH), and the first guest material has an ionization potential (IPG1) and an electron affinity (AFG1) that satisfy Expression (1): IPH?IPG1 and AFH<AFG1 (1). The organic light emitting element has significantly improved efficiency without any influence on driving voltage.

Abstract: A color conversion film is disclosed that absorbs light from an organic electroluminescent part emitting blue-green light and converts the light to visible light at a longer wavelength. The color conversion film includes two different dyes. A first dye is a polymer dye with an average molecular weight of 1000 to 1,000,000 that absorbs light incident on the color conversion film and transfers the energy of the light to a second dye. The second dye is a dye that receives the energy from the first dye and emits light. With a multicolor-emitting, organic electroluminescent device including the color conversion film, it is possible to achieve excellent conversion efficiency without increasing the thickness of the color conversion film as in a conventional device using a binder resin.

Abstract: An organic light emitting element includes a pair of electrodes at least one of which has visible light transmittance; and an organic EL layer provided between the pair of electrodes. The organic EL layer includes at least an organic light emitting layer that emits light when a voltage is applied between the pair of electrodes. The organic light emitting layer includes an electron transport host material; and at least first and second guest materials. Each of the first and second guest materials has an emission peak in a blue to blue-green color region. The electron transport host material has an ionization potential (IPH) and an electron affinity (AFH), and the first guest material has an ionization potential (IPG1) and an electron affinity (AFG1) that satisfy Expression (1): IPH?IPG1 and AFH<AFG1 (1). The organic light emitting element has significantly improved efficiency without any influence on driving voltage.

Abstract: An organic EL device is disclosed that prevents degradation due to moisture and oxygen and that avoids the generation of dark spots even when a substrate covered with polymer or made of a resin is used. The organic EL device includes a substrate, a transparent electrode consisting of a plurality of electrode elements formed on the substrate, an organic EL layer formed on the transparent electrode, and a reflection electrode formed on the organic EL layer. The transparent electrode includes first and second transparent electrode elements. Each of the first transparent electrode elements is arranged alternately with each of the second transparent electrode elements. A side edge portion of each of the first transparent electrode elements overlaps a side edge portion of next second transparent electrode element through an insulation layer. The first transparent electrode elements are electrically insulated from the second transparent electrode elements.

Abstract: When the ratio of a guest material to a host material is extremely small, it is difficult to maintain, with good accuracy, the ratio of the guest material to be vapor-deposited on the work surface and the distribution state of the guest material. The vacuum vapor deposition apparatus and method includes providing a shielding member, positioned between a first vapor deposition source and a substrate to be coated so that the vapor deposition amount of the guest material on the substrate surface is significantly less than the vapor deposition amount of the host material. A shielding member drive mechanism rotates the shielding member about a first axis while rotating the shielding member about a second axis, which is spaced from and parallel to the first axis.

Abstract: The present invention provides a high-efficiency organic EL device that can be fabricated by a simple process and that can prevent color shift arising from variations in film thickness. The organic EL light-emitting device includes a plurality of independent light-emitting elements that constitute first, second, and third emission color subpixels. The light-emitting elements constituting the first emission color subpixels and the second emission color subpixels have a semitransparent reflective layer between a transparent substrate and a transparent electrode, and this semitransparent reflective layer is configured so as to function with the reflective electrode as a resonator for the light of the emission colors. The light-emitting elements constituting the third emission color subpixels additionally have a color conversion layer between the transparent substrate and the transparent electrode.

Abstract: A method of manufacturing a white light emitting organic EL device is disclosed. A white light emitting organic EL device having a plurality of organic EL layers each emitting different color light from each other without an increase in a driving voltage is readily fabricated. The method manufactures a white light emitting organic EL device having at least a reflective electrode, a first organic EL layer that emits light in a first color, an intermediate electrode unit, a second organic EL layer that emits light in a second color different from the first color, and a second transparent electrode in this order. The reflective electrode is of the same polarity as the second transparent electrode, and the intermediate electrode unit is of opposite polarity to the reflective electrode and the second transparent electrode.

Abstract: A white organic EL element structure exhibiting a good emission efficiency in which the emission color does not vary with current application time. The organic EL element has an organic EL layer sandwiched by a pair of electrodes, characterized in that wherein the organic EL layer includes at least a carrier recombination layer and one or more of carrier nonrecombination layers the carrier recombination layer emits blue or blue green EL light having a peak wavelength of 400-500 nm through recombination of carriers injected into the organic EL element, the carrier nonrecombination layer contains a host material having carrier injection/transportation ability and absorbing at least a part of the EL light and one or more of kinds of PL emission dye material emitting PL light of lower energy than that of the EL light, and the distance between the carrier recombination layer and the carrier nonrecombination layer is 15 nm or above.

Abstract: [Problems] To provide a white or multicolor light emitting device that sufficiently contains components of various wavelength regions while having excellent brightness balance among the colors, and a method for producing such a light emitting device by a simple process. [Means to Solve the Problems] A light emitting device comprising, on a transparent substrate, a complementary color layer, a transparent electrode, an organic light emitting body and a reflective electrode. This light emitting device is characterized in that the organic light emitting body comprises at least a blue light emitting layer and a red light emitting layer, the complementary color layer absorbs a part of the light emitted from the organic light emitting body and emits green light, and the device emits white light from the transparent substrate side.

Abstract: Manufacturing an organic EL display by: forming n types of color filter layers on a transparent substrate; forming a dye layer containing (n?1) types of color conversion dyes by a dry process; forming an organic EL device on the dye layer; and exposing the dye layer to dye-decomposing light from the side of the transparent substrate to form an m-th type color conversion layer at a position corresponding to an m-th type color filter layer; where n represents an integer from 2 to 6; m represents an integer from 1 to (n?1); each of the color filter layers transmits light in a different wavelength region; m-th type color conversion dye is decomposed by light cut by the m-th type color filter layer; and the m-th type color conversion layer emits light transmitted by the m-th type color filter layer after wavelength distribution conversion.

Abstract: A color-converting-function-possessing color filter and a method for its manufacture are disclosed. A simplified manufacturing process is provided that makes possible highly detailed patterning. The method of manufacturing the color-converting filter comprises a step of forming color filter layers on a transparent substrate, a step of forming a colorant layer containing a color-converting colorant on the color filter layers, and a step of exposing the colorant layer via the transparent substrate and the color filter layers using colorant-decomposing light, thus forming color-converting layers in positions corresponding to the color filter layers. In usage, a layered body consists of a transparent substrate, color filter layers and a colorant layer as a color-converting-function-possessing filter.

Abstract: An organic light emitting device of high quality is disclosed that can be produced by a simple method and rarely causes color degradation due to current in the device. In one embodiment, the organic light emitting device comprises a substrate, a lower electrode disposed over the substrate, an organic light emitting layer disposed over the lower electrode and in electrical contact with the lower electrode, and an upper electrode disposed over the organic light emitting layer and in electrical contact with the organic light emitting layer. The upper electrode includes a first upper electrode element, a color conversion layer disposed on the first upper electrode element, and a second upper electrode element disposed on the color conversion layer and in electrical contact with the first upper electrode element.

Abstract: An organic EL device is disclosed that prevents degradation due to moisture and oxygen and that avoids the generation of dark spots even when a substrate covered with polymer or made of a resin is used. The organic EL device includes a substrate, a transparent electrode consisting of a plurality of electrode elements formed on the substrate, an organic EL layer formed on the transparent electrode, and a reflection electrode formed on the organic EL layer. The transparent electrode includes first and second transparent electrode elements. Each of the first transparent electrode elements is arranged alternately with each of the second transparent electrode elements. A side edge portion of each of the first transparent electrode elements overlaps a side edge portion of next second transparent electrode element through an insulation layer. The first transparent electrode elements are electrically insulated from the second transparent electrode elements.

Abstract: A color-converting-function-possessing color filter and a method for its manufacture are disclosed. A simplified manufacturing process is provided that makes possible highly detailed patterning. The method of manufacturing the color-converting filter comprises a step of forming color filter layers on a transparent substrate, a step of forming a colorant layer containing a color-converting colorant on the color filter layers, and a step of exposing the colorant layer via the transparent substrate and the color filter layers using colorant-decomposing light, thus forming color-converting layers in positions corresponding to the color filter layers. In usage, a layered body consists of a transparent substrate, color filter layers and a colorant layer as a color-converting-function-possessing filter.

Abstract: A thermal decomposition apparatus for plastics wherein plastics are melted and thermally decomposed, and the resulting decomposition gas is cooled for condensation and recovered in the form of a thermal decomposition oil. The apparatus comprises a thermal decomposition reactor for melting and thermally decomposing the plastics therein, an extraneous matter discharge duct having one end opened in a melt of plastics within the reactor, an extraneous matter collecting container connected to the other end of the discharge duct, and an aspirator for aspirating extraneous matter within the reactor together with the melt through the discharge duct into the container.

Abstract: A thermal decomposition apparatus for plastics wherein plastics are melted and thermally decomposed, and the resulting decomposition gas is cooled for condensation and recovered in the form of a thermal decomposition oil. The apparatus comprises a thermal decomposition reactor for melting and thermally decomposing the plastics therein, an extraneous matter discharge duct having one end opened in a melt of plastics within the reactor, an extraneous matter collecting container connected to the other end of the discharge duct, and an aspirator for aspirating extraneous matter within the reactor together with the melt through the discharge duct into the container.