Abstract:
PROBLEM TO BE SOLVED: To provide a light-transmissive organic electroluminescent element, a luminaire and a method for manufacturing an organic electroluminescent element.SOLUTION: According to an embodiment, there is provided an organic electroluminescent element that includes a first electrode, a second electrode, an organic light-emitting layer and an optical layer. The first electrode has a first principal surface and a second principal surface opposite to the first principal surface. The first electrode has light-transmitting property. The second electrode is opposite to a part of the first principal surface. The organic light-emitting layer is disposed between the first electrode and the second electrode. The optical layer is provided facing the second principal surface. The optical layer can transition between a first state for changing a traveling direction of light emitted from the organic light-emitting layer and a second state whose degree of variations of the traveling direction of light is smaller than the first state.
Abstract:
PROBLEM TO BE SOLVED: To provide a light-transmissive organic electroluminescent element, a luminaire and a method for manufacturing an organic electroluminescent element.SOLUTION: According to an embodiment, there is provided an organic electroluminescent element that includes a first electrode, a plurality of second electrodes and an organic light-emitting layer. The first electrode has a first principal surface. The first electrode has light-transmitting property. The plurality of second electrodes are opposite to the first electrode, extend along a first direction parallel to the first principal surface, and are spaced apart from each other in a second direction parallel to the first principal surface and perpendicular to the first direction. The light transmittance of the second electrodes is lower than the light transmittance of the first electrode. Side surfaces of the second electrodes are fluctuated in a wave shape along the first direction. The organic light-emitting layer is disposed between the first electrode and the second electrodes.
Abstract:
PROBLEM TO BE SOLVED: To improve luminance of an organic EL element while suppressing luminance unevenness.SOLUTION: An organic EL element 1 includes: an organic layer 2 containing an organic compound; a first electrode 3 which injects holes into the organic layer 2; a second electrode 4 which faces the first electrode 3 across the organic layer 2 and injects electrons into the organic layer 2; a substrate 5 on which the first electrode 3 is formed; and a flattening layer 6 which is provided between a hole injection layer 2HI of the organic layer 2 and the substrate 5, contains an organic compound, and has a thickness of 2 to 8 nm inclusive and a surface roughness of the surface on the organic layer 2 side of 6 nm or less.
Abstract:
PROBLEM TO BE SOLVED: To emit white light with high emission efficiency in an organic electroluminescent light-emitting element using a fluorescent emission material in a blue light-emitting layer, and using a phosphorescent material in red and green light-emitting layers.SOLUTION: The electroluminescent light-emitting element includes an anode and a cathode disposed separately from each other, red and green light-emitting layers and a blue light-emitting layer disposed separately from each other between the anode and cathode, and a spacer layer of 3-20 nm thick interposed between the red and green light-emitting layers and the blue light-emitting layer. The spacer layer contains a charge transporting material having a molecular orientation in the in-plane vertical direction, and the orientation order parameter is between -0.5 and -0.2.
Abstract:
PROBLEM TO BE SOLVED: To provide a luminescent apparatus, a display apparatus, and a method of driving an organic electroluminescent device which suppress occurrence of defects caused by leak current and do not shorten the life of the apparatus due to such defects.SOLUTION: According to an embodiment, there is provided a luminescent apparatus comprising: an organic electroluminescent device including a first electrode, a light-emitting layer arranged on the first electrode, and a second electrode arranged on the light-emitting layer; a driving circuit configured to drive the organic electroluminescent device by supplying a driving current to between the first electrode and the second electrode; driving stop means for stopping driving of the organic electroluminescent device when a value of the driving current falls below a predetermined value.
Abstract:
PROBLEM TO BE SOLVED: To provide a highly efficient lighting device capable of restraining voltage drop within a surface and attaining uniform brightness and improving light extraction efficiency, and a method of manufacturing the same. SOLUTION: The lighting device includes an organic light-emitting section 30 containing an organic light-emitting layer and having a first principal plane 30a and a second principal plane 30b, a first electrode 10 arranged on the first principal plane, a second electrode 20 arranged on the second principal plane, and an optical layer 40 arranged on a side opposite to the organic light-emitting section of the second electrode 20. The second electrode 20 includes a conductive layer 20b, and first wiring 21 and second wiring 22 electrically connected to the conductive layer 20b and extending in a first direction parallel to the first principal plane and having conductivity higher than that of the conductive layer. The optical layer 40 includes a low refractive index section 40a having a section overlapped with the first wiring and the second wiring viewed from a direction orthogonal to the first principal plane, and a high refractive index section 40b having a section come in contact with the section of the low refractive index section and having a refractive index higher than that of the low refractive index section. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To improve light emission efficiency in an organic electroluminescent element that uses polyethylenedioxy thiophene as a hole injection layer material. SOLUTION: The organic electroluminescent element 10 includes a pair of electrodes constituted of an anode 12 and cathode 17, which are disposed mutually separated; a first region 15a of the cathode side which includes a hole-transport host material, an electronic transport host material and an emitting dopant; and a second region 15b of the anode side which includes the hole-transport host material and excludes the electronic transporting host material. Furthermore, the organic electroluminescent element includes a light-emitting layer 15, disposed in between a pair of the electrodes; a hole injection layer 13, disposed in between the anode 12 and light-emitting layer 15 and which contains polyethylenedioxy thiophene; and a hole-transporting layer 14 which is disposed between the hole injection layer 13 and light-emitting layer 15 and which contains the hole-transport material. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an organic electroluminescent element that can avoid a decrease in light emission efficiency due to trapping of an electron or hole, non-emission deactivation of an exciton, etc., and a decrease in light emission efficiency and lifetime due to an increase in maximum value of exciton density. SOLUTION: The organic electroluminescent element has a light emitting layer 14 between an anode 12 and a cathode 15, and the light emitting layer 14 contains a single host material and a light emitting material. When the host material has hole transporting properties, the light emitting layer 14 includes a region 14b doped with an electron transporting material on the side of the cathode 15 and a region 14a doped with no electron transporting material on the side of the anode 12. When the host material has electron transporting properties, on the other hand, the light emitting layer 14 has a region 14a doped with a hole transporting material on the side of the anode 12 and a region 14b doped with no hole transporting material on the side of the cathode 15. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a cold cathode for discharge lamp having high discharging efficiency and sufficiently exerting long life owing to diamond formed in uniform thickness even if the shape of a base material is not planar, and manufacturing method of a cold cathode discharge lamp and a cold cathode for the discharge lamp. SOLUTION: The cold cathode for discharge lamp is composed of a conductive plate-shaped metal base material having curved part, diamond films formed on one or both faces of the plate-shaped metal base material excluding the curved part, and a metal member having electrode mounted on an opening part of the plate-shaped metal base material. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a discharge lamp using diamond as a emissive material and having high light emitting efficiency, and its manufacturing method, and a high efficient discharge lamp having higher light emitting efficiency while temperature in the discharge lamp can be easily managed, and its manufacturing method. SOLUTION: This discharge lamp is provided with a sealed envelope having a light transmission part and containing discharge gas and mercury, a pair of electrodes arranged in such a state that a diamond layer is formed as the emissive material on a surface of a substrate and a part is housed in the envelope at the end part of the envelope, a bonding layer provided on the electrode, a sealing material layer provided on the bonding layer, and a phosphor provided on the inner surface of the envelope. The bonding layer contains an element which is a component element of the sealing material layer and easily reacts with carbon. The envelope and the electrode are joined through the bonding layer and the sealing material layer. COPYRIGHT: (C)2006,JPO&NCIPI