Abstract: Provided is an organic electroluminescent element that achieves increased emission intensity in the front direction of the organic electroluminescent element without reducing the size of the light-emitting region thereof.

Abstract: A display with organic electroluminescent elements each having an optical-interference structure includes; a blue-light emitting layer containing a host material and a light emitting material, where lowest unoccupied molecular orbital of a hole-transporting layer is smaller than that of the host material and highest occupied molecular orbital (HOMO) of the host material is larger than that of the hole-transporting layer by 0.5 eV or lower; and a film-thickness adjustment layer disposed between a light emitting layer and the hole-transporting layer of a red-light emitting electroluminescent element or a green-light emitting electroluminescent element, where the hole-mobility of the adjustment layer is higher than the carrier-mobility of the light emitting layer of the electroluminescent element having the adjustment layer, and HOMO of the adjustment layer is not higher than that of the hole-transporting layer and not lower than that of the light emitting material in the light emitting layer thereof.

Abstract: Provided is a display apparatus using an organic EL device in which blur in a display image to be a problem for the display apparatus is reduced while propagating light propagating through a high-refractive-index transparent layer is efficiently extracted outside. The display apparatus has a configuration in which a high-refractive-index transparent layer is provided on a light exit side of the organic EL device, a light extraction structure is provided on the high-refractive-index transparent layer so as to surround each of subpixels, a visible light absorbing member is arranged between pixels adjacent to each other, and the visible light absorbing member is not arranged in a region between subpixels adjacent to each other within a pixel.

Abstract: An organic EL element includes: an organic EL layer including a transparent electrode, a reflective electrode, and a light-emitting layer; a transparent layer disposed on a light-exiting side of the transparent electrode; and a light extraction structure disposed on a light-exiting side of the transparent layer and having a protruding shape with inclined portions. The transparent layer and the light extraction structure have a larger refractive index than the light-emitting layer. The inclined portions of the light extraction structure satisfy Condition 1 or 2 for extracting guided wave light emitted from the light-emitting layer and incident on the light extraction structure from the light extraction structure to the outside of the organic EL element, in a cross section taken along a plane perpendicular to the reflective electrode, where two inclination angles ?1 and ?2 formed between the reflective electrode and the inclined portions are the largest.

Abstract: A display apparatus includes a plurality of subpixels having different emission colors in a pixel, and each of the subpixels includes an organic EL device. A high-refractive-index transparent layer having a refractive index higher than that of an organic compound layer of the organic EL device is provided on a light exit side of the organic EL device, and further, a light extraction structure is arranged on an outer circumference of the subpixel on the light exit side of the high-refractive-index transparent layer. A distance between first electrodes of the subpixels closest to each other, which are respectively included in the two adjacent pixels, is set to be larger than that between the first electrodes of the two adjacent subpixels within the pixel.

Abstract: Provided is a display apparatus including an organic EL device in which blur in a displayed image to be a problem for the display apparatus is reduced. The display apparatus includes a plurality of subpixels for emitting light having different emission colors in a pixel, and each of the plurality of subpixels includes an organic EL device. A transparent layer having a refractive index higher than that of an organic compound layer of the organic EL device is provided on the organic EL device, and further, a light extraction structure surrounding each of the subpixels is provided on the transparent layer. A distance between the subpixels closest to each other included in two adjacent pixels is set to be at least a sum of waveguide lengths of light emitted from the respective subpixels.

Abstract: Provided is an organic electroluminescent element that achieves increased emission intensity in the front direction of the organic electroluminescent element without reducing the size of the light-emitting region thereof.

Abstract: An organic EL element includes: an organic EL layer including a transparent electrode, a reflective electrode, and a light-emitting layer; a transparent layer disposed on a light-exiting side of the transparent electrode; and a light extraction structure disposed on a light-exiting side of the transparent layer and having a protruding shape with inclined portions. The transparent layer and the light extraction structure have a larger refractive index than the light-emitting layer. The inclined portions of the light extraction structure satisfy Condition 1 or 2 for extracting guided wave light emitted from the light-emitting layer and incident on the light extraction structure from the light extraction structure to the outside of the organic EL element, in a cross section taken along a plane perpendicular to the reflective electrode, where two inclination angles ?1 and ?2 formed between the reflective electrode and the inclined portions are the largest.