Abstract: An organic EL device according to the present invention includes: a first structure section; and a second structure section. The first structure section includes: a recess; a reflection layer provided along an inner surface of the recess; a filling layer filled at an inner side of the recess via the reflection layer; a first electrode; an organic layer including a light-emitting layer; and a second electrode. The second structure section includes: a reflection layer provided on a flat surface of the base material; a first electrode; an organic layer including a light-emitting layer; and a second electrode.

Abstract: An organic electroluminescence device according to one aspect of the present invention includes: a substrate; a thin film transistor provided above the substrate; a flattening layer provided above the thin film transistor and including a contact hole which is open on a side opposite to the substrate; a reflecting layer provided along at least a surface of the contact hole; a light-transmitting filling layer configured to fill an inside of the contact hole with the reflecting layer therebetween; and an organic EL element formed above the flattening layer and a contact hole top.

Abstract: The present invention provides an organic EL element with high luminous efficacy and high productivity, and an organic EL panel including the organic EL element. The organic electroluminescent element includes, in the given order: an anode; a hole transport layer; a light-emitting unit; an electron transport layer; and a cathode, the light-emitting unit including a first luminescent dopant layer, a first blocking layer, a second luminescent dopant layer, and a mixed light-emitting layer in the given order, the mixed light-emitting layer containing a first luminescent host material and a first luminescent dopant material, the first luminescent dopant layer substantially consisting of a second luminescent dopant material, the second luminescent dopant layer substantially consisting of a third luminescent dopant material, the first blocking layer containing a second luminescent host material.

Abstract: An organic electroluminescent display device of the present invention includes: a substrate; an anode (first electrode); an organic layer including a light-emitting layer; a cathode (second electrode); a reflective layer and a semi-transmissive reflective layer provided to interpose an organic layer; and a plurality of sub-pixels of different colors in which light emitted from the organic layer is repeatedly reflected between the reflective layer and the semi-transmissive reflective layer such that light of a specific wavelength is enhanced and emitted. The substrate is bent or curved, and an optical path length between the reflective layer and the cathode (semi-transmissive reflective layer) in a sub-pixel of a predetermined color of a flat region (first region) is different from an optical path length between the reflective layer and the cathode (semi-transmissive reflective layer) in a sub-pixel of a same color as the predetermined color of a bent region (second region).

Abstract: The organic electroluminescent element of the present invention includes, in the given order: an anode; a light-emitting layer; and a cathode, the light-emitting layer including a luminescent dopant layer and a luminescent host layer, the luminescent dopant layer containing a luminescent dopant material and substantially no luminescent host material, the luminescent host layer containing a luminescent host material and substantially no luminescent dopant material.

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: An organic electroluminescence device according to the present invention includes: a base material having a top surface on which a recess is provided; a reflective layer provided along at least a surface of the recess; a filling layer filled in the recess via the reflective layer, the filling layer having light transmissivity; a first electrode provided at least on an upper layer side of the filling layer, the first electrode having light transmissivity; an organic layer provided on an upper layer side of the first electrode, the organic layer including at least a light emitting layer; and a second electrode provided on an upper layer side of the organic layer, the second electrode having light transmissivity. The second electrode has a reflectance of 70% or less.

Abstract: A mixed material for vapor deposition of lithium contains lithium oxide M1 in an amount of 90% or more, sodium chloride (at least one material selected from oxides, sulfides, chlorides, and fluorides of alkali metals) M2 having a melting point lower than the melting point of lithium oxide M1, and magnesium oxide (at least one material selected from oxides and sulfides of alkaline-earth metals) M3 having a melting point higher than the melting point of lithium oxide M1.

Abstract: An organic electroluminescence device according to one aspect of the present invention includes: a base material having a top surface on which a recess is provided; a reflective layer provided along at least a surface of the recess; a filling layer filled inside the recess via the reflective layer, the filling layer having light transmissivity; a first electrode provided at least on an upper layer side of the filling layer, the first electrode having light transmissivity; an organic layer provided on an upper layer side of the first electrode, the organic layer including at least a light emitting layer; and a second electrode provided on an upper layer side of the organic layer, the second electrode having light transmissivity, wherein a coloring material is mixed into the filling layer.

Abstract: An organic electroluminescence device according to one aspect of the present invention includes: a base material in which a recess is provided at an upper surface of the base material; a reflective layer that is provided at least along a surface of the recess; a filling layer that is filled into an inside of the recess via the reflective layer, the filling layer having light transmissivity; a first electrode that is provided at least on a layer above the filling layer, the first electrode having light transmissivity and light reflectivity; an organic layer that is provided on a layer above the first electrode, the organic layer including at least a light-emitting layer; and a second electrode that is provided on a layer above the organic layer, the second electrode having light transmissivity and light reflectivity. A part of the reflective layer contacts a part of the first electrode.

Abstract: The organic electroluminescent element of the present invention includes, in the given order: an anode; a light-emitting layer; and a cathode, the light-emitting layer including a luminescent dopant layer and a luminescent host layer, the luminescent dopant layer containing a luminescent dopant material and substantially no luminescent host material, the luminescent host layer containing a luminescent host material and substantially no luminescent dopant material.

Abstract: The organic EL device includes a base material, a recessed portion, a reflective layer provided along an inner face of the recessed portion, a filling layer having optical transparency, and filled and disposed at an inside of the recessed portion, with the reflective layer interposed between the recessed portion and the filling layer, a first electrode having optical transparency and provided at an upper-layer side of the filling layer, an organic layer including a light-emitting layer and provided at an upper-layer side of the first electrode, a second electrode having optical transparency and optical reflectivity and provided at an upper-layer side of the organic layer. At least a portion of an edge of the light-emitting region is positioned further inside than an edge of the recessed portion, and the reflective layer and the first electrode are in contact with each other at the periphery of the recessed portion.

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: An organic EL device according to the present invention includes: a first structure section; and a second structure section. The first structure section includes: a recess; a reflection layer provided along an inner surface of the recess; a filling layer filled at an inner side of the recess via the reflection layer; a first electrode; an organic layer including a light-emitting layer; and a second electrode. The second structure section includes: a reflection layer provided on a flat surface of the base material; a first electrode; an organic layer including a light-emitting layer; and a second electrode.

Abstract: The organic EL display panel includes: an active matrix substrate including a thin-film transistor; and an organic EL element disposed on the active matrix substrate, the organic EL element including, in the order from the active matrix substrate side, a cathode electrically connected to the thin-film transistor, a first charge conversion layer in contact with the cathode, a first hole injection layer, a first hole transport layer, a first light-emitting layer, a first electron transport layer, a first electron injection layer, a second charge conversion layer, and an anode in contact with the second charge conversion layer, the first charge conversion layer designed to inject electrons into the cathode and emit holes to the first light-emitting layer side, the second charge conversion layer designed to inject holes into the anode and emit electrons to the first light-emitting layer side.

Abstract: The present invention provides an organic electroluminescent panel capable of increasing the luminous efficacy and decreasing the driving voltage of a top emission (TE) organic EL element. The organic electroluminescent panel of the present invention includes: a substrate; and an organic electroluminescent element provided on the substrate. The organic electroluminescent element is a top emission element that includes, in the order from the substrate side: an anode; a light-emitting layer; an electron transport layer; a first metal layer; a p-type oxide layer; and a transparent cathode. The top emission element is configured to emit light from the transparent cathode side. The light-emitting layer and the electron transport layer are each formed from an organic material. At least one of a mixture layer of a p-type oxide and a hole transport material and a second metal layer is provided between the electron transport layer and the transparent cathode.

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: Occurrence of a crosstalk phenomenon is prevented in a light-emitting device including a tandem element. The light-emitting device includes an insulating layer, a first lower electrode over the insulating layer, a second lower electrode over the insulating layer, a partition positioned over the insulating layer and between the first lower electrode and the second lower electrode, a first light-emitting unit over the first lower electrode, the partition, and the second lower electrode, intermediate layers over the first light-emitting unit, a second light-emitting unit over the intermediate layer, and an upper electrode over the second light-emitting unit. The partition has a first depression.

Abstract: A light-emitting device with high reliability is provided. A light-emitting device includes a substrate 101, an organic EL element 110 formed over the substrate, a counter substrate 102 which is disposed so as to face the substrate, a plurality of projection structures 102a which are formed on the counter substrate and face the organic EL element, and a thermal conductor 135a of a liquid, a solid, or the like, which is disposed between the substrate and the counter substrate. The plurality of projection structures and the organic EL element are each in contact with the thermal conductor.

Abstract: An organic EL display device includes a plurality of sub-pixels each including a first organic EL element and a second organic EL element, a temperature information detector configured to measure current-voltage characteristics of the second organic EL element included in each of the sub-pixels, and to detect, on the basis of a result of the measurement, temperature information of the second organic EL element included in each of the sub-pixels, and a correction unit configured to correct a driving signal of the first organic EL element included in each of the sub-pixels on the basis of the temperature information of the second organic EL element included in the same sub-pixel as the sub-pixel including the relevant first organic EL element.