Abstract: According to one embodiment, an organic electroluminescent device includes a first electrode, a second electrode, an organic light emitting layer and an optical layer. The first electrode has a first major surface and a second major surface opposite to the first major surface and is light transmissive. The second electrode faces a portion of the first major surface. The organic light emitting layer is provided between the first electrode and the second electrode. The organic light emitting layer and the first electrode are disposed between the optical layer and the second electrode. The optical layer is able to transit between a first state where a traveling direction of light emitted from the organic light emitting layer is changed and a second state having a smaller degree of the change in the traveling direction of the light than the first state.

Abstract: The organic electroluminescent device according to the embodiment has: anode and cathode electrodes placed apart from each other, a red and green light-emitting layer and a blue light-emitting layer, and a spacer layer having a thickness of 3 nm to 20 nm inclusive. The light-emitting layers are placed apart from each other and positioned between the electrodes. The spacer layer is positioned between the light-emitting layers, and includes a carrier transport material containing molecules capable of being oriented in the in-plane and vertical direction with an orientational order parameter of ?0.5 to ?0.2 inclusive.

Abstract: According to one embodiment, there is provided a light emitting device including an organic electroluminescent device that includes a first electrode, a light emitting layer arranged above the first electrode, and a second electrode arranged above the light emitting layer, a drive circuit that supplies a drive current between the first electrode and the second electrode to drive the organic electroluminescent device, and a drive stop circuit that stops the driving of the organic electroluminescent device when a value of the drive current falls below a predetermined value.

Abstract: According to one embodiment, an illumination device includes an organic light-emitting unit, a first electrode, a second electrode and an optical layer. The organic light-emitting unit includes an organic light-emitting layer, a first and a second major surface. The first electrode is provided on the first major surface. The second electrode is provided on the second major surface and includes a conductive layer, a first interconnection and a second interconnection. The first interconnection is electrically connected to the conductive layer and aligned in a first direction parallel to the first major surface. The second interconnection is electrically connected to the conductive layer and aligned apart from the first interconnection and parallel to the first interconnection. The optical layer is provided on a side of the second electrode opposite to the organic light-emitting unit and includes a low refractive index portion and a high refractive index portion.

Abstract: According to one embodiment, an organic electroluminescent device comprises a translucent substrate, a light extraction layer including a convex structure disposed in a net form on one surface of the substrate and having a tilted surface forming an acute angle relative to the substrate, and a planarizing layer disposed on the convex structure, a first electrode disposed on the light extraction layer, a luminescent layer disposed on the first electrode and containing a host material and a luminescent dopant, and a second electrode disposed on the luminescent layer. A refractive index of the planarizing layer is approximately equal to a refractive index of the first electrode or is larger than the refractive index of the first electrode, and a refractive index of the convex structure is smaller than a refractive index of the planarizing layer.

Abstract: According to one embodiment, an organic electroluminescent device includes a transparent electrode, a metal electrode, an organic light emitting layer and an intermediate layer. The transparent electrode is transmissive with respect to visible light. The metal electrode is reflective with respect to the visible light. The organic light emitting layer is provided between the transparent electrode and the metal electrode and is configured to emit light including a wavelength component of the visible light. The intermediate layer contacts the metal electrode and the organic light emitting layer between the organic light emitting layer and the metal electrode and is transmissive with respect to the visible light. A thickness of the intermediate layer is 60 nanometers or more and less than 200 nanometers. A refractive index of the organic light emitting layer to the visible light is higher than a refractive index of the intermediate layer to the visible light.

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.

Abstract: According to one embodiment, an illumination device includes an organic light-emitting unit, a first electrode, a second electrode and an optical layer. The organic light-emitting unit includes an organic light-emitting layer, a first and a second major surface. The first electrode is provided on the first major surface. The second electrode is provided on the second major surface and includes a conductive layer, a first interconnection and a second interconnection. The first interconnection is electrically connected to the conductive layer and aligned in a first direction parallel to the first major surface. The second interconnection is electrically connected to the conductive layer and aligned apart from the first interconnection and parallel to the first interconnection. The optical layer is provided on a side of the second electrode opposite to the organic light-emitting unit and includes a low refractive index portion and a high refractive index portion.