Abstract: An organic EL display device includes a blue pixel, and a second pixel configured to output light having a peak wavelength longer than that of blue light. The blue pixel includes a blue phosphorescent luminescent material containing layer and a blue fluorescent luminescent material containing layer as common layers common to the plurality of pixels, and the second pixel includes a second phosphorescent luminescent material containing layer provided in each of the second pixel, adjacently to the common layers at the side of an anode from the common layers.

Abstract: To provide a light-emitting device for achieving fluorescence emission with higher efficiency and longer life, a light-emitting device includes an exciton generation layer in which quantum dots are dispersed, a light-emitting layer in which light emitters, which are phosphors or phosphorescent members, are dispersed, the light-emitting layer adjoining the exciton generation layer in a vertical direction, a first electrode located on a lower side of the exciton generation layer and the light-emitting layer, and a second electrode located on an upper side of the exciton generation layer and the light-emitting layer, and the light emission spectrum of the quantum dots and the absorption spectrum of the light emitters at least partially overlap.

Abstract: An organic electroluminescence device according to one aspect of the disclosure includes a base material including a recessed portion on an upper face, and a light emitting element including a reflective layer, a filling layer having optical transparency, a first electrode having optical transparency, an organic layer including at least a light emitting layer, and a second electrode having optical transparency. The reflective layer is disposed at least on a surface of the recessed portion. The filling layer is disposed at an inside of the recessed portion with the reflective layer interposed between the recessed portion and the filling layer. The first electrode is disposed at least on an upper-layer side of the filling layer. The organic layer is disposed on an upper layer of the first electrode. The second electrode is disposed on an upper-layer side of the organic layer. The organic electroluminescence device includes a display region that is divided into a plurality of unit regions.

Abstract: An organic EL display device with higher resolution, suppressed power consumption while being driven and low manufacturing cost, and no color mixing and color shifting between subpixels adjacent to each other is provided. In a B subpixel, a first separation layer is provided between a common blue-light-emitting layer and a common green-light-emitting layer. In a G subpixel, a second separation layer is provided between the common green-light-emitting layer and a common red-light-emitting layer.

Abstract: Provided is a display apparatus where: a blue light-emitting layer is formed as a layer that is common to a first subpixel, a second subpixel, and a third subpixel; a green light-emitting layer is formed as a layer that is common to the second subpixel and the third subpixel; and the red light-emitting layer is formed only in the third subpixel.

Abstract: A blue fluorescent light-emitting layer is provided in common for a subpixel and a subpixel, a green fluorescent light-emitting layer is provided in common for the subpixel and a subpixel, and a red light-emitting layer is provided in common for the subpixel and a subpixel. An opposing surface distance is less than or equal to a Förster radius, and in the subpixel, the green fluorescent light-emitting layer and the red light-emitting layer are layered with a separation layer interposed therebetween.

Abstract: Provided is an EL element utilizing upconversion light emission involving highly efficient triplet-triplet annihilation. A blue-light-emitting layer includes an ionic liquid, a red phosphorescent material, and a blue fluorescent material. The blue fluorescent material and the red phosphorescent material are homogeneously dispersed in a liquid film of the ionic liquid.

Abstract: A blue fluorescent light-emitting layer is provided in common for first and second subpixels, a green fluorescent light-emitting layer is provided in common for second and third subpixels, and a red light-emitting layer is provided in common for the second and fourth subpixels. In the second subpixel, an opposing surface distance is less than or equal to a Förster radius, and at least of the blue fluorescent light-emitting layer and the green fluorescent light-emitting layer are layered with the red light-emitting layer with a separation layer interposed therebetween.

Abstract: An organic EL element (10) includes a first light-emitting layer (33a) having the shortest emission peak wavelength of a light-emitting layer (33) and containing a host material and a TTF material or at least the TTF material, a second light-emitting layer (33b) containing at least a TADF material, a third light-emitting layer (33c) having the longest emission peak wavelength of the light-emitting layer (33) and containing at least fluorescent material. The excited triplet level of the TTF material is lower than the excited triplet level of the TADF material.

Abstract: A light emitting element including at least a first trench portion having an indented shape within a single light emitting region. The first trench portion includes a first electrode, an EL layer, and a second electrode. The first electrode, the EL layer, and the second electrode are layered in this order and in contact with each other. At least one of the first electrode or the second electrode includes a reflective electrode.

Abstract: Provided is a display apparatus where: a red light-emitting layer is formed as a layer that is common to a first subpixel, a second subpixel, and a third subpixel; a blue light-emitting layer is formed as a layer that is common to the first subpixel and the second subpixel; and the green light-emitting layer is formed only in the second subpixel.

Abstract: The organic EL element (10) at least includes, between a first electrode (2) and a second electrode (4), at least one layer of an exciton generating layer (33) which contains at least one type of TADF material as a host material and at least one layer of a fluorescent emission layer (34) which contains at least one type of fluorescent emission material.

Abstract: A hole injection layer provided between a first electrode and each of light emitting layers, and an electron injection layer provided between a second electrode and each of light emitting layers, overlap only inward from an end portions each of the light emitting layers when viewed in plan view.

Abstract: In this manufacturing method, in a blue fluorescent light-emitting layer formation step, a blue fluorescent light-emitting layer is formed in both a subpixel and a subpixel; in a green fluorescent light-emitting layer formation step, a green fluorescent light-emitting layer is formed in both the subpixel and a subpixel; and in a red light-emitting layer formation step, a red light-emitting layer is formed in both the subpixel and a subpixel. In at least two of the abovementioned steps, linear vapor deposition is performed using a slit mask having an opening that is provided so as to extend across a plurality of pixels.

Abstract: A hole injection layer provided between a first electrode and each of light emitting layers, and an electron injection layer provided between a second electrode and each of light emitting layers, overlap only inward from an end portions each of the light emitting layers when viewed in plan view.

Abstract: An individual hole transport layer is individually disposed between a common hole transport layer and a light emitting layer in each sub pixel, and the energy level value of the lowest unoccupied molecular orbital of the individual hole transport layer is smaller than the energy level value of the lowest unoccupied molecular orbital of the common hole transport layer, but larger than the energy level value of the lowest unoccupied molecular orbital of the light emitting layer in sub pixel. Thus, a hole can be efficiently injected into the light emitting layer.

Abstract: A light-emitting element includes at least a first trench portion having an indented shape within a single light-emitting region. In the first trench portion, a first electrode, an EL layer, and a second electrode are layered in this order and in contact with each other. One of the first electrode and the second electrode includes a reflective electrode, and concave-convex portions of the submicron order configured to diffract surface plasmons are provided on the surface of the reflective electrode on a side closer to the EL layer.

Abstract: Provided is a display apparatus where: a green light-emitting layer is common to a first subpixel, a second subpixel, and a third subpixel; a blue light-emitting layer is formed solely in the first subpixel; the red light-emitting layer is formed solely in the third subpixel; and in the first subpixel a separation layer is formed between the blue light-emitting layer and the green light-emitting layer.

Abstract: An organic EL element (10) includes a first light-emitting layer (33a) having the shortest emission peak wavelength of a light-emitting layer (33) and containing a host material and a TTF material or at least the TTF material, a second light-emitting layer (33b) containing at least a TADF material, a third light-emitting layer (33c) having the longest emission peak wavelength of the light-emitting layer (33) and containing at least fluorescent material. The excited triplet level of the TTF material is lower than the excited triplet level of the TADF material.

Abstract: Provided is a display apparatus where: a red light-emitting layer is formed as a layer that is common to a first subpixel, a second subpixel, and a third subpixel; a blue light-emitting layer is formed as a layer that is common to the first subpixel and the second subpixel; and the green light-emitting layer is formed only in the second subpixel.