Abstract: A semiconductor device according to an embodiment includes: a wide bandgap semiconductor layer; a gate electrode; and a gate insulating layer disposed between the wide bandgap semiconductor layer and the gate electrode, including a first silicon oxide film, a second silicon oxide film between the first silicon oxide film and the gate electrode, and a first aluminum oxynitride film between the first silicon oxide film and the second silicon oxide film, and having a first atomic ratio of nitrogen relative to a sum of oxygen and nitrogen at a first position in the first aluminum oxynitride film which is lower than a second atomic ratio of nitrogen relative to a sum of oxygen and nitrogen at a second position, closer to the second silicon oxide film than the first position, in the first aluminum oxynitride film.

Abstract: According to one embodiment, a semiconductor substrate includes a first semiconductor layer including Alx1Ga1-x1N (0<x1?1) and including carbon and oxygen, and a second semiconductor layer including Alx2Ga1-x2N (0<x2<x1) and including carbon and oxygen. A second ratio of a carbon concentration of the second semiconductor layer to an oxygen concentration of the second semiconductor layer is 730 or more.

Abstract: According to one embodiment, a semiconductor device includes a first semiconductor layer including a nitride semiconductor, a first electrode separated from the first semiconductor layer in a first direction, and a first insulating film including silicon and oxygen and being provided between the first semiconductor layer and the first electrode. The first insulating film has a first thickness in the first direction. The first insulating film includes a first position, and a distance between the first position and the first semiconductor layer is ½ of the first thickness. A first hydrogen concentration of hydrogen at the first position is 2.5×1019 atoms/cm3 or less.

Abstract: According to one embodiment, a method for manufacturing a semiconductor device is disclosed. The method can include forming a trench and exposing a portion of a first film at a bottom portion of the trench by removing a portion of a second film by performing dry etching using a gas including a first element. The second film is provided on the first film. The first film includes Alx1Ga1-x1N (0?x1<1). The second film includes Alx2Ga1-x2N (0<x2<1 and x1<x2). The method can include performing heat treatment while causing the portion being exposed of the first film to contact an atmosphere including NH3, forming an insulating film on the portion of the first film after the heat treatment, and forming an electrode on the insulating film.

Abstract: According to one embodiment, an organic electroluminescent element includes a substrate, a first electrode, a second electrode, an organic layer and a first conductive unit. The substrate is light-transmissive. The second electrode is provided between the substrate and the first electrode. The second electrode is light-transmissive. The second electrode includes a first region and a second region. A direction connecting the first region and the second region intersects a first direction connecting the substrate and the first electrode. The organic layer is provided between the second electrode and the first electrode. The first conductive unit is provided between the first region and a portion of the substrate. The first conductive unit is electrically connected with the second electrode. The first conductive unit includes a third region and a fourth region. A portion of the fourth region is disposed between the substrate and at least a portion of the third region.

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, 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: According to one embodiment, an organic electroluminescent element includes a first electrode, an organic layer, and a second electrode. The first electrode is light-transmissive. The organic layer is provided on the first electrode. The second electrode is provided on the organic layer. The second electrode is light-reflective and includes a first conductive portion and a second conductive portion. The first conductive portion extends in a first direction. The second conductive portion extends in a second direction intersecting the first direction. The second conductive portion intersects the first conductive portion. A length in the first direction of the first conductive portion is longer than 1 mm and not more than 47 mm. A length in the second direction of the second conductive portion is longer than 1 mm and not more than 47 mm.

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: According to an embodiment, an organic electroluminescent device includes a first electrode that is optically transparent and has a first region and a second region; an insulation layer that has insulation parts formed of a translucent insulation material on the first and second regions, the insulation parts arranged per unit of surface area are equal in number between the first and second regions; an organic layer provided on at least the first region of the first electrode via the insulation layer; and a second electrode formed on the organic layer, having conductive parts each of which is light-reflective and openings. Each of the openings overlaps at least two of the insulation parts.

Abstract: According to one embodiment, an organic electroluminescent element includes a substrate, a first electrode, a second electrode, an organic layer and a first conductive unit. The substrate is light-transmissive. The second electrode is provided between the substrate and the first electrode. The second electrode is light-transmissive. The second electrode includes a first region and a second region. A direction connecting the first region and the second region intersects a first direction connecting the substrate and the first electrode. The organic layer is provided between the second electrode and the first electrode. The first conductive unit is provided between the first region and a portion of the substrate. The first conductive unit is electrically connected with the second electrode. The first conductive unit includes a third region and a fourth region. A portion of the fourth region is disposed between the substrate and at least a portion of the third region.

Abstract: According to one embodiment, an organic electroluminescent element includes a first electrode, an organic layer, and a second electrode. The first electrode is light-transmissive. The organic layer is provided on the first electrode. The second electrode is provided on the organic layer. The second electrode is light-reflective and includes a first conductive portion and a second conductive portion. The first conductive portion extends in a first direction. The second conductive portion extends in a second direction intersecting the first direction. The second conductive portion intersects the first conductive portion. A length in the first direction of the first conductive portion is longer than 1 mm and not more than 47 mm. A length in the second direction of the second conductive portion is longer than 1 mm and not more than 47 mm.

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 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 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 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: 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, 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.