Abstract: The present invention relates to an organic electroluminescence element in which a transparent first electrode, an organic light emitting layer, a second electrode are stacked on a translucent substrate in this order. The translucent substrate includes a moisture-proof layer facing the first electrode. An LR layer and an HR layer having a refractive index higher than a refractive index of the LR layer are situated between the moisture-proof layer and the first electrode in this order from the moisture-proof layer. An uneven structure is provided at an interface between the LR layer and the HR layer. A linear expansivity ? of the moisture-proof layer, and a linear expansivity ? of the LR layer, and a linear expansivity ? of the HR layer satisfy a relation of ?????.

Abstract: The organic electroluminescence element includes: a moisture-proof substrate; a light emitting stack including a first electrode, a light emitting layer, and a second electrode; and an enclosing member bonded to the substrate to enclose the stack. The element further includes a light-outcoupling structure provided on a side of the substrate facing the first electrode and having an uneven structure made of material having a refractive index almost equal to or lower than a refractive index of the substrate. The uneven structure includes a plane divided into a matrix of sections, and multiple protruded parts having almost same heights individually allocated to desired sections of the matrix. With regard to an arbitrary region of the plane, a ratio of a total area of one or some of the multiple protruded parts in the arbitrary region to an area of the arbitrary region is almost constant.

Abstract: A composite substrate includes a moisture-proof substrate, and a resin substrate pasted on a surface of the moisture-proof substrate. The resin substrate is formed to be smaller than the moisture-proof substrate in planar view. An end side of the resin substrate is an inclined face that is inclined inward. In an organic electroluminescence device, an organic light-emitting multilayer provided on a surface of the resin substrate is sealed with a sealing member. A moisture-proof film coats at least part of the surface of the resin substrate in which no lead-out electrode is formed.

Abstract: An organic electroluminescent element having a structure in which a plurality of light-emitting layers stacked between a first electrode with light reflectivity and a second electrode with optical transparency while one or more interlayers with a light transmissive property are interposed between the plurality of light-emitting layers. A first interlayer is formed as the interlayer closest to the first electrode. A first light-emitting unit is formed between the first electrode and the first interlayer to include a first light-emitting layer which has a first light-emitting source, and a second light-emitting unit is formed on a side of the first interlayer close to the second electrode to include a second light-emitting layer which has a second light-emitting source. The first interlayer is a semi-transmissive layer which has both of optical transparency and light reflectivity and has a total light absorption ratio of 10% or less.

Abstract: The disclosure relates to an organic electroluminescence element including an organic layer including multiple light-emitting layers. The light-emitting layers include a blue light-emitting layer including a blue light-emitting dopant. In a case where emission color of the organic electroluminescence element operated at an operation temperature for a stable state is represented in a CIE1931 chromaticity coordinate system, when coordinate point A of the emission color at an early stage of use and coordinate point B of the emission color deteriorated by use are represented by (x1, y1) and (x2, y2) respectively, a relation of y2?y1 is satisfied. When amounts of changes in x and y values from coordinate point A to coordinate point B are represented by equations of ?x=x2?X1 and ?y=y2?y1 respectively, a relation of ?y??x is satisfied.

Abstract: The light emitting device comprises a mounting substrate and an LED chip which comprises an n-type nitride semiconductor layer, a nitride light emission layer on the n-type nitride semiconductor layer, p-type nitride semiconductor layer on the nitride light emission layer, an anode electrode opposite of the nitride light emission layer from the p-type nitride semiconductor layer, and a cathode electrode on the n-type nitride semiconductor layer. The mounting substrate has a patterned conductor which is connected to the cathode electrode through a bump and also connected to the anode electrode through a bump. The LED chip further comprises one or more dielectric layer between the p-type nitride semiconductor layer and the anode electrode to have an arrangement which resembles an island. The p-type nitride semiconductor layer has a first region which is overlapped with the bump. The dielectric layer is not formed within the first region.

Abstract: Provided is a method of preparing an organic electroluminescent element. The method includes: a roughening step of roughening a surface of a moisture-proof substrate; a composite substrate-forming step of placing a resin film on the roughened surface of the moisture-proof substrate to form a composite substrate; an electroluminescent laminate-forming step of forming an organic electroluminescent laminate on a surface of the composite substrate; and a covering step of covering the organic electroluminescent laminate with a covering substrate that is larger than the resin film in a plan view. It gives a highly reliable organic electroluminescent element superior in light-outcoupling efficiency that is effectively resistant to water penetration and to degradation.

Abstract: The organic electroluminescence element in accordance with the present invention, includes: a substrate; a light-emitting stack on a face of the substrate; a covering substrate provided so as to face the face of the substrate; and a sealing bond surrounding the light-emitting stack and bonding the substrate and the covering substrate to enclose the light-emitting stack together with the covering substrate and the substrate. The sealing bond includes a bonding layer and a low moisture permeable layer, and the low moisture permeable layer is lower in moisture permeability and thicker than the bonding layer.

Abstract: The organic electroluminescence element in accordance with the present invention includes: a substrate; a light-outcoupling layer situated on a surface of the substrate; a light-emitting layer situated on a face on an opposite side of the light-outcoupling layer from the substrate; a sealing base situated facing the face of the light-outcoupling layer; and a sealing bond formed to enclose the light-emitting layer and bond the sealing base to the face of the light-outcoupling layer. The light-outcoupling layer includes: a first portion where the light-emitting layer is situated; a second portion where the sealing bond is situated; and a groove spatially separating the first portion from the second portion.

Abstract: In a light emitting element, a semiconductor layer including a light emitting layer is stacked on a GaN substrate 11, and a surface of the GaN substrate 11 opposite to the stacked semiconductor layer serves as a main light emission surface S. At the main light emission surface S, quadrangular pyramid shaped protrusions 11a which are continuously arranged and whose standing direction F2 is displaced from a stacking direction of the semiconductor layer are formed. In each protrusion 11a, fine asperities are, by etching, preferably formed at least at an inclined surface having a small inclination angle. Moreover, each protrusion 11a may be in a truncated shape, but is preferably formed in a pointed shape.

Abstract: A composite substrate includes a moisture-proof substrate, and a resin substrate pasted on a surface of the moisture-proof substrate. The resin substrate is formed to be smaller than the moisture-proof substrate in planar view. An end side of the resin substrate is an inclined face that is inclined inward. In an organic electroluminescence device, an organic light-emitting multilayer provided on a surface of the resin substrate is sealed with a sealing member. A moisture-proof film coats at least part of the surface of the resin substrate in which no lead-out electrode is formed.

Abstract: A planar light emitting device includes an organic EL element module unit in which plural organic EL elements are arranged side by side, each of the organic EL elements including an anode, a light emitting layer and a cathode that are formed on a first surface side of a first transparent substrate, and a second transparent substrate disposed on a light extraction side of the organic EL element module unit. The organic EL element includes a first through hole wire that is electrically connected to a first part of the anode formed outside a light emitting portion, and a second through hole wire that is electrically connected to a second part of the cathode that extends on the first surface of the first transparent substrate. External connection electrodes for supplying power to the organic EL element module are disposed on a first surface side of the second transparent substrate so as to avoid a projection region of the light emitting portion.

Abstract: The planar light emitting device according to the present invention includes: an organic electroluminescence element; a formation substrate of a light transmissive resin material being adjacent to a first surface of the organic electroluminescence element; a light outcoupling structure provided to the formation substrate and suppressing reflection of light emitted from the organic electroluminescence element at a surface of the formation substrate; a first moisture preventer with a moisture proof property being over a second surface of the organic electroluminescence element to cover the organic electroluminescence element; and a second moisture preventer with a moisture proof property covering the formation substrate to prevent moisture from passing through the formation substrate and reaching the first surface of the organic electroluminescence element. The second moisture preventer includes an overlap overlapping the first surface in the thickness direction of the organic electroluminescence element.

Abstract: An organic electroluminescent element having a structure in which a plurality of light-emitting layers stacked between a first electrode with light reflectivity and a second electrode with optical transparency while one or more interlayers with a light transmissive property are interposed between the plurality of light-emitting layers. A first interlayer is formed as the interlayer closest to the first electrode. A first light-emitting unit is formed between the first electrode and the first interlayer to include a first light-emitting layer which has a first light-emitting source, and a second light-emitting unit is formed on a side of the first interlayer close to the second electrode to include a second light-emitting layer which has a second light-emitting source. The first interlayer is a semi-transmissive layer which has both of optical transparency and light reflectivity and has a total light absorption ratio of 10% or less.

Abstract: The light emitting device includes an organic electroluminescent element (20) and a diffractive optical element (30). The organic electroluminescent element (20) includes an anode layer (21), a cathode layer (22), and plural light emitting layers (231 and 232) interposed between the anode layer (21) and the cathode layer (22) and configured to emit light rays with different wavelengths. The diffractive optical element (30) is positioned in paths of light rays emitted from the organic electroluminescent element (20). The diffractive optical element (30) is designed to have different grating patterns (311 and 312) diffracting the light rays respectively emitted from the light emitting layers (231 and 232) for reducing chromatic aberration.

Abstract: The surface light emitting device includes an organic EL element, a protection substrate, a protection part, and a light extraction structure part. The element has a first face and a second face opposite to the first face, and emits light from the first face. The substrate has transparency for light emitted from the element, and is placed facing the first face, and has a primary surface facing the first face of the element. The protection part is placed facing the second face of the element, and constitutes a housing in combination with the substrate and accommodates the element so as to protect the element from water. The structure part is interposed between the first face of the element and the substrate, and suppresses reflection of light emitted from the element on at least one of the first face of the element and the primary surface of the substrate.

Abstract: A white light-emitting organic electroluminescent element includes at least four kinds of light-emitting dopants with different emission peak wavelengths which are present between a cathode and an anode. The four kinds of light-emitting dopants include a light-emitting dopant “A”, a light-emitting dopant “B”, a light-emitting dopant “C”, and a light-emitting dopant “D” having their own peak wavelengths which are longer in this order. The white light-emitting organic electroluminescent element has an emission spectrum which satisfies relations of: (first average luminance for an angle in a range of 50° to 70°/first front luminance)>(second average luminance for an angle in a range of 50° to 70°/second front luminance); and (third average luminance for an angle in a range of 50° to 70°/third front luminance)>(fourth average luminance for an angle in a range of 50° to 70°/fourth front luminance).

Abstract: A planar light emitting device includes an organic EL element module unit in which plural organic EL elements are arranged side by side, each of the organic EL elements including an anode, a light emitting layer and a cathode that are formed on a first surface side of a first transparent substrate, and a second transparent substrate disposed on a light extraction side of the organic EL element module unit. The organic EL element includes a first through hole wire that is electrically connected to a first part of the anode formed outside a light emitting portion, and a second through hole wire that is electrically connected to a second part of the cathode that extends on the first surface of the first transparent substrate. External connection electrodes for supplying power to the organic EL element module are disposed on a first surface side of the second transparent substrate so as to avoid a projection region of the light emitting portion.

Abstract: A semiconductor light emitting element, including: an n-type semiconductor layer having optical transparency with an emission wavelength of a light emitting layer, the light emitting layer and a p-type semiconductor layer, which are laminated; and a reflection film which is disposed on a side opposite to a surface from which light emitted from the light emitting layer is extracted, wherein the reflection film comprises: a transparent layer having optical transparency with the emission wavelength of the light emitting layer, and a metal layer, which is laminated on the transparent layer on a side opposite to the light emitting layer and is constituted by a metal material having a high reflectance, the transparent layer has a refractive index lower than a refractive index of a layer disposed on a side of the light emitting layer when viewed from the transparent layer, with the emission wavelength, and a thickness of the transparent layer is equal to or more than a value obtained by dividing a value of ¾ of the

Abstract: A method of manufacturing the semiconductor light emitting element comprises a semiconductor layer forming step of forming the multilayered nitride semiconductor layer on the first wafer having a transparent property; a bonding step of bonding the multilayered nitride semiconductor layer to the first wafer; a groove forming step of forming the groove extending from the lower surface of the first wafer to the multilayered nitride semiconductor layer; a light applying step of applying a first light to the lower surface of the multilayered nitride semiconductor layer through the first wafer to reduce a bonding force between the multilayered nitride semiconductor layer and the first wafer; a separating step of separating the first wafer from the multilayered nitride semiconductor layer; and a cutting step of cutting the second wafer along the groove to divide into a plurality of the semiconductor light emitting element.