Abstract: According to one embodiment, an organic electroluminescent element includes a first electrode, a second electrode provided opposite to the first electrode, an organic light emitting layer provided between the first electrode and the second electrode, and a protrusion. The protrusion is provided at least one of between the first electrode and the organic light emitting layer and between the organic light emitting layer and the second electrode.

Abstract: According to one embodiment, an organic electroluminescent element includes a first electrode, a reflective layer provided opposite to the first electrode, an organic light emitting layer provided between the first electrode and the reflective layer, a second electrode provided between the organic light emitting layer and the reflective layer, an optical buffer layer provided between the second electrode and the reflective layer, and a plurality of light extraction portions. The plurality of light extraction portions are provided between the second electrode and the organic light emitting layer. The plurality of light extraction portions are projected from the side provided with the second electrode of the optical buffer layer into the optical buffer layer. The light extraction portions have a refractive index different from a refractive index of the optical buffer layer.

Abstract: According to one embodiment, a semiconductor light emitting device includes a first semiconductor layer of a first conductivity type, a second semiconductor layer of a second conductivity type, a third semiconductor layer. The third semiconductor is provided between the first semiconductor layer and the second semiconductor layer. A first transistor includes a first gate electrode and a first amorphous semiconductor layer. The first gate electrode and the first amorphous semiconductor layer overlap in a first direction. The first direction is from the first semiconductor layer toward the second semiconductor layer. The first gate electrode is provided between the second semiconductor layer and the first amorphous semiconductor layer.

Abstract: According to one embodiment, a light emitting element includes a first electrode, a second electrode, a light emitting layer, and a conductive section. The second electrode is provided opposite to the first electrode. The light emitting layer is provided between the first electrode and the second electrode. The second electrode includes a plurality of layers, and the plurality of layers include a first layer. The conductive section pierces the first layer in thickness direction. The conductive section includes a conductive material. Each of the plurality of layers includes at least one of Al, Al alloy, Ag, Ag alloy, alkali metals, and alkaline-earth metals and being different from one another.

Abstract: An organic electroluminescent device includes a first electrode, an insulating layer, an organic light emitting layer, a second electrode, and a light transmissive part. The first electrode has an upper face. The insulating layer is provided on the upper face. The insulating layer includes first to fifth insulating parts. The organic light emitting layer is provided on the upper face in between the insulating parts. The second electrode is provided on the organic light emitting layer. The light transmissive part overlaps the first region of the first electrode when projected onto the plane. The light transmissive part makes a phase of a first light permeating the first region to be different from a phase of a second light permeating the second region of the first electrode.

Abstract: An organic electroluminescent device includes a first substrate, a second substrate, and a stacked body. The first substrate has light permeability. The second substrate has light permeability. The stacked body is provided between the first substrate and the second substrate. The stacked body includes a first electrode, a second electrode, and an organic light emitting layer. The first electrode has light permeability. The second electrode includes an opening and a conductive part. The conductive part is light reflective. The second electrode is stacked on the first electrode in a stacking direction of the first substrate and the second substrate. The organic light emitting layer is provided between the first electrode and the second electrode. The second substrate includes a light scattering part overlapping with the conductive part when projected onto a plane perpendicular to the stacking direction.

Abstract: An organic electroluminescent device includes first and second electrode and an organic light emitting layer. The first electrode has an upper face. The organic light emitting layer is provided on the first electrode. The second electrode is provided on the organic light emitting layer. The second electrode includes a plurality of conductive parts. The conductive parts extend in a first direction parallel to the upper face and are arranged in a second direction. The second direction is parallel to the upper face and intersects with the first direction. When a length of each of the conductive parts in the second direction is set to W1 (micrometer), and a pitch of each of the conductive parts is set to P1 (micrometer). The W1 and the P1 satisfy a relationship of W1??647(1?W1/P1)+511 and a relationship of W1??882(1?W1/P1)+847.

Abstract: An organic electroluminescent device includes a first electrode, an insulating layer, an organic light emitting layer, and a second electrode. The insulating layer is provided on the first electrode. The insulating layer includes a first opening for exposing a part of the first electrode. The organic light emitting layer includes a first part and a second part. The first part is provided on the part of the first electrode. The second part is provided on the insulating layer. The second electrode is provided on the organic light emitting layer. The second electrode includes a conductive part and a plurality of second openings. The conductive part is disposed on at least a part of the first part. Each of the second openings exposes a part of the organic light emitting layer. The second electrode is light-reflective.

Abstract: An organic electroluminescent device includes first and second substrates, first and second electrodes, an organic light emitting layer, and first and second terminal parts. The first substrate has an upper face including a device region and a periphery region surrounding the device region. The upper face is polygonal. The first electrode is provided on the device region. The organic light emitting layer is provided on the first electrode. The second electrode is provided on the organic light emitting layer. The second substrate is provided on the second electrode. The first terminal part is provided on the periphery region. The second terminal part is provided separated from the first terminal part on the periphery region. At least one of the first terminal part and the second terminal part extends along each of a plurality of sides of the upper face.

Abstract: An organic electroluminescent device includes first and second electrode and an organic light-emitting layer. The first electrode has an upper face. The organic light-emitting layer is provided on the upper face. The second electrode is provided on the organic light-emitting layer. The second electrode includes first and second extension parts. The first extension parts extend in a first direction and are arranged in a second direction. The second extension parts extend in the second direction and are arranged in the first direction. When a length of the first extension parts in the second direction is W1, a pitch of the first extension parts is P1, a length of the second extension parts in the first direction is W2, and a pitch of the second extension parts is P2. W1 and P1 satisfy a relationship of W1??750(1?W1/P1)(1?W2/P2)+675. W2 and P2 satisfy a relationship of W2???750(1?W1/P1)(1?W2/P2)+675.

Abstract: According to one embodiment, in an organic electroluminescence device, a first substrate has a first refractive index n1. A second substrate is joined to an upper surface of the first substrate and has a second refractive index n2 higher than the first refractive index n1. Multiple wedge-shaped metal lines are buried in the second substrate in such a manner that one side of the wedge-shaped metal line is flush with an upper surface of the second substrate. A transparent electrode is formed on the upper surface of the second substrate and the multiple metal lines. An insulating layer is formed on a portion of the transparent electrode opposed to the multiple metal lines. An organic light emitting layer is formed on the transparent electrode on which the insulating layer is formed. A metal electrode is formed on the organic light emitting layer.

Abstract: According to one embodiment, an organic electroluminescent device includes a first substrate, a second substrate, a stacked body, and an intermediate layer. The first substrate has a first major surface. The second substrate has a second major surface and a third major surface. The second major surface is facing the first major surface. The third major surface has a first concave-convex portion. The third major surface is provided opposite the second major surface. The stacked body provided between the first substrate and the second substrate. The stacked body includes a first electrode, a second electrode, and an organic light emitting layer. The intermediate layer is provided between the second substrate and the stacked body.

Abstract: In general, according to one embodiment, an illumination device includes a light emitting unit, a connection unit, a containing unit, and a second sealing unit. The light emitting unit includes a first substrate, a second substrate, an organic electroluminescent element, and a first sealing unit. The organic electroluminescent element is provided between the first substrate and the second substrate. The first sealing unit seals circumferential edge portions between the first substrate and the second substrate. The connection unit supplies power to the organic electroluminescent element. The containing unit has a space being airtight in an interior of the containing unit. The containing unit contains the light emitting unit inside the space. The second sealing unit is provided in the containing unit. The second sealing unit seals between a portion of the unit extending outside the containing unit and the containing unit.

Abstract: According to one embodiment, a display device, includes: a display unit and a control unit. The display unit has a plurality of segments. Each of the plurality of segments includes a plurality of organic light emitting layers to emit light of mutually different colors. The plurality of segments forms one of a plurality types of images by changing the colors of the emitted light from the plurality of segments. The control unit drives each of the plurality of segments of the display unit to emit light.

Abstract: According to one embodiment, an organic electroluminescent element includes a first electrode, a second electrode provided opposite to the first electrode, an organic light emitting layer provided between the first electrode and the second electrode, and a protrusion. The protrusion is provided at least one of between the first electrode and the organic light emitting layer and between the organic light emitting layer and the second electrode.

Abstract: According to one embodiment, an organic electroluminescent element includes a first electrode, a reflective layer, an organic light emitting layer, a second electrode, and an optical buffer layer. The reflective layer is provided to face the first electrode. The organic light emitting layer is provided between the first electrode and the reflective layer. The second electrode is provided between the organic light emitting layer and the reflective layer. The optical buffer layer is provided between the second electrode and the reflective layer. The refractive index of the optical buffer layer is lower than a refractive index of the organic light emitting layer. The optical buffer layer includes a gas filled between the second electrode and the reflective layer.

Abstract: According to one embodiment, an organic electroluminescent element includes a first electrode, a reflective layer provided opposite to the first electrode, an organic light emitting layer provided between the first electrode and the reflective layer, a second electrode provided between the organic light emitting layer and the reflective layer, an optical buffer layer provided between the second electrode and the reflective layer, and a plurality of light extraction portions. The plurality of light extraction portions are provided between the second electrode and the organic light emitting layer. The plurality of light extraction portions are projected from the side provided with the second electrode of the optical buffer layer into the optical buffer layer. The light extraction portions have a refractive index different from a refractive index of the optical buffer layer.

Abstract: According to one embodiment, a light emitting element includes a first electrode, a second electrode, a light emitting layer, and a conductive section. The second electrode is provided opposite to the first electrode. The light emitting layer provided between the first electrode and the second electrode. The second electrode includes a plurality of layers. The conductive section pierces the first layer in thickness direction. The conductive section includes a conductive material. The second electrode includes a plurality of layers. Each of the plurality of layers includes at least one selected from the group consisting of Al, Al alloy, Ag, Ag alloy, alkali metals, and alkaline-earth metals and being different from one another.

Abstract: According to one embodiment, an organic electroluminescent device includes a support substrate, a first electrode, a second electrode, and an intermediate layer. The first electrode is opposed to the support substrate. The second electrode is provided between the support substrate and the first electrode and includes a conductive polymer material. The intermediate layer is provided between the first electrode and the second electrode. A thickness dimension of the intermediate layer is 140 nanometers or less.

Abstract: According to one embodiment, an organic electroluminescent light emitting device includes a transparent substrate, an intermediate layer, a first electrode, an organic light emitting layer, and a second electrode. The intermediate layer includes a plurality of fine particles and a flattened layer. The fine particles are adhered to a major surface of the transparent substrate. The flattened layer covers the fine particles and has a refractive index different from a refractive index of the fine particles. The flattened layer is transparent. The first electrode is provided on the intermediate layer. The first electrode is transparent. The organic light emitting layer is provided on the first electrode. The second electrode is provided on the organic light emitting layer.