Hitachi, Ltd.

Hitachi Displays, Ltd.

Canon Kabushiki Kaisha

Japan Display Inc.

Panasonic Liquid Crystal Display Co., Ltd.

Nec Platforms, Ltd.

Shingo Ishihara

Sukekazu Aratani

Masaya Adachi

Yoshiro Mikami

Takayuki Ouchi

Masao Shimizu

Kazuhito Masuda

Hajime Murakami

Etsuko Nishimura

Kenichi Onisawa

Hiroshi Sasaki

Yoshiyuki Kaneko

Masahiko Ando

Masatoshi Wakagi

Eiji Matsuzaki

Toshiro Mikami

Akitoyo Konno

Tomoyuki Hamada

Hirotaka Sakuma

Yasuo Imanishi

Shunichiro Nobuki

Hiroshi Kageyama

Tatsuya Sugita

Atsushi Kakuta

Tsukuru Ohtoshi

Hiroyuki Kagawa

Shintaro Takeda

Kotaro Araya

Hiroyasu Matsuura

Naoya Tokoo

Keiji Takanosu

In an organic light-emitting element including a first electrode, a second electrode, and a light-emitting layer placed between the first electrode and the second electrode, the light-emitting layer includes a host material, a first emitter, and a second emitter, the emission peak wavelength of the first emitter is longer than the emission peak wavelength of the second emitter, and an aromatic heterocyclic ligand or an auxiliary ligand of the first emitter include an electron withdrawing group. Accordingly, an organic light-emitting element can be provided in which the HOMO value of a specific luminescent dopant is closer to the HOMO value of another luminescent dopant.

Material for forming organic light-emitting layer, coating liquid for forming organic light-emitting element, organic light-emitting element and light source device, and method for manufacturing same

Provided is a technique of compensating time degradation of a CPU and maintaining performance of an electronic device without disturbing a normal operation of the electronic device. A maintenance apparatus includes: a degradation information acquisition unit that acquires degradation information from a sensor circuit integrated in a CPU when the CPU performs a normal operation, the degradation information varying according to degradation of the CPU; a degradation level determination unit that determines a degradation level based on the degradation information, the degradation level indicating a degree of progression of degradation of the CPU; and a power supply control unit that controls a power supply to increase a power supply voltage applied to the CPU with increasing the degradation level.

Maintenance apparatus of electronic device, maintenance method of electronic device, and non-transitory computer readable medium storing program

In order to achieve the increased efficiency of an organic light-emitting element, there is a need to reduce the influence of non-radiative recombination of electron-hole pairs except for surface plasmon polariton excitation, to convert most of exciton energy into visible light, and to tremendously improve the luminous efficiency of the organic light-emitting element. An organic light-emitting element according to the present invention includes a reflective electrode, a transparent electrode, and a light-emitting layer placed between the reflective electrode and the transparent electrode, and the organic light-emitting element is configured so that the light-emitting layer contains a host and a first dopant, and for the first dopant, one of the vertical component and horizontal component of the average value for transition dipole moments with respect to a substrate surface is larger than the other of the components.

Organic light-emitting element, light source device and method of manufacturing organic light-emitting element

An object of the present invention is to provide an organic light-emitting device, wherein light trapped in a substrate due to total reflection at the interface between air and a substrate is efficiently extracted to the air side. The organic light-emitting device includes: a transparent electrode; a counter electrode; a light-emitting layer interposed between the transparent electrode and the counter electrode; a front substrate which allows light from the light-emitting layer to exit to the outside from a surface of the front substrate on the opposite side to the light-emitting layer side; and a diffuse reflector which reflects light from the light-emitting layer, wherein the diffuse reflector is provided on a side surface of the front substrate and at a given position on a surface thereof.

Organic light-emitting device

An organic light-emitting device including a first substrate, a second substrate, a light drawing-out layer disposed between the first substrate and the second substrate, a transparent electrode disposed between the light drawing-out layer and the first substrate, a reflection electrode disposed between the transparent electrode and the first substrate, and a first light-emitting unit disposed between the transparent electrode and the reflection electrode. The first light-emitting unit includes a first light-emitting layer that emits a first light-emitting color. In the organic light-emitting device, relations of the equation L&#x2267;&#x3bb;/4 and the equation Lcos &#x3b8;=&#x3bb;(&#xbc;+n/2) are satisfied, wherein Lis an optical length from a light-emitting point in the first light-emitting layer to the reflection electrode, &#x3bb;is a wavelength at the longer wavelength side, having an intensity of 1% of the maximum intensity of a light-emitting spectrum of the first light-emitting color, &#x3bb;is a wavelength at the shorter wavelength side, having an intensity of 1% of the maximum intensity of the light-emitting spectrum of the first light-emitting color, n is an integer not less than 0, and 0 &#x3c;&#x3b8;&#x2266;60.

Organic light-emitting device and light source apparatus using same

An object of the present invention is to provide an organic light emitting element where light emitted from the light emitting layer is efficiently emitted to the outside, and thus, the efficiency of light emission is higher. The present invention provides an organic light emitting element where a first reflective electrode, an electron transport layer, a light emitting layer, a hole transport layer, a hole injection layerand a second transparent electrodeare formed on a glass substrate, and a light extraction layerhaving an average index of refraction of 1.4 made of titanium particles having an index of refraction of 2.6 and an average particle diameter of 150 nm and silica sol.

Organic light emitting element

An organic light-emitting display device is provided that has prolonged service life, lowered wiring resistance that can lower power consumption, and that is easy to manufacture. In a first embodiment, a moisture capturing layer is provided between an upper electrode and a lower electrode. A second embodiment includes a metal substrate, an organic light-emitting element on the substrate and an upper transparent electrode connected to the substrate through a contact hole. In a third embodiment, a method is provided for forming a first organic compound including a light-emitting layer, heating the first organic compound in vacuo, and forming a second organic compound.

Organic light-emitting element, method for manufacturing the organic light-emitting element, apparatus for manufacturing the organic light-emitting element, and organic light-emitting device using the organic light-emitting element

An organic light-emitting diode in accordance with the present invention includes: a reflective electrode; an organic layer formed on the reflective electrode; a transparent electrode formed on the organic layer; a transparent resin layer formed on the transparent electrode; and an encapsulation glass formed on the transparent resin layer. The organic layer includes a light-emitting point. Cone- or pyramid-shaped transparent resin structures are provided in the transparent resin layer in such a manner that each of the cone- or pyramid-shaped transparent resin structures splays from the transparent resin layer toward the encapsulation glass in a normal direction of the encapsulation glass. A refractive index of the transparent resin layer is 1.3 times or more to 1.6 times or less as high as that of the cone- or pyramid-shaped transparent resin structures.

Organic light-emitting diode and light source device including same

Organic luminescent elements forming an R sub-pixel, a G sub-pixel, and a B sub-pixel are formed of lower electrodes (, and), hole-transporting layers (, and), luminescent layers (, and), electron-transporting layers (, and), and an upper electrode (), and each of the organic luminescent elements optimizes an optical interference condition. A dielectric alternate laminated film () is formed on the upper electrode (), and forms a micro-resonator with each of the lower electrodes. The micro-resonator structure raises the directivity of a radiation pattern, and improves the light extraction efficiency of each of the organic luminescent elements. A narrow radiation pattern is alleviated by a view angle-controlling layer () formed on the dielectric alternate laminated film () so as to broaden until a perfectly diffusing surface radiation pattern. Consequently, the light extraction efficiency can be improved in an organic luminescent display device.

Organic luminescent display device

To reduce brightness variation by wiring resistance of an upper part transparent electrode in an organic luminescence element, a stripe-shape first auxiliary wiringextending in a direction parallel to a signal line is formed on the upper part transparent electrode, by a precise mask vapor deposition method. Then, a stripe-shape second auxiliary wiringextending in a direction parallel to a scanning line is formed by a precise mask vapor deposition method.

Organic electroluminescence display device and method of manufacturing the same

It is an object to provide an organic light-emitting element having two or more light-emitting layers, wherein degradation of each constituent material for the light-emitting layer is reduced to improve reliability of the element. The present invention provides an organic light-emitting element having a laminated structure with a first mixed light-emitting layercomposed of a hole transport material, an electron transport material and a dopant which determines a color of an emitted light, and a second mixed light-emitting layercomposed of a hole transport material, an electron transport material and a dopant which determines a color of an emitted light, and also provides an image display device which uses the organic light-emitting element.

Organic light-emitting element, image display device and production method thereof

The present invention provides an organic light emitting device in which an upper transparent electrodeof an organic light emitting deviceis connected electrically at a contact hole portionto a current supply linedisposed in the same layer as that of and extending in parallel with a gate line. That is, a hole transport layerand an electron transport layerof the organic light emitting deviceare formed over the entire display region, and then a contact hole portionis removed to electrically connect the current supply lineand the upper transparent electrode, thereby decreasing unevenness of luminance due to wiring resistance of the upper transparent electrode.

Organic light emitting display device and manufacturing method thereof

A scanning line, a signal line, a first current supply line, and a second current supply line are formed on a glass substrate, a first electrode is formed on the wiring layer comprising the above members, an organic layer comprising a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer is formed on the first electrode, a second electrode is formed as cathode on the electron injection layer, the first electrode as anode is connected to a plus terminal of a power source through the driving devices and the first current supply line, whereas the second electrode as cathode is connected to a minus terminal of the power source, and is connected to the second current supply line in the display region of each pixel, with a contact hole serving as a feeding point, whereby wiring resistance due to the second electrode is reduced, and variations in the brightness of a panel is reduced.

Organic light-emitting display device

Light-emitting devices () and light-emitting displays () for realizing bright display by allowing light emitted from an emissive layer () to efficiently contribute to a display. Polarization separators () are arranged between the emissive layer () and a phase plate (). In the light of a wavelength range which includes a part or all of a light-emission wavelength range of the emissive layer and is narrower than a visible wavelength range and is directed from the emissive layer side to the polarization separators side, the polarization separators () reflect circularly polarized light components which are converted into linearly polarized light that is absorbed by the polarizer () due to the operation of the phase plate and transmit the other light.

Organic light-emitting devices and displays including a polarization separator, a phase plate, and a polarizer

An active matrix type display includes a light emission device having a transparent pixel electrode and a metal pixel electrode on both surfaces of a light emitting layer and a driving circuit controlling the driving current of the light emission device. The driving circuit is formed on a substrate, and the light emission device is formed as a layer above the driving circuit with an intermediate layer of insulation material interposed therebetween. The metal pixel electrode device is connected with the driving circuit through a conduction portion which extends through the intermediate layer. Thus, light emitted from the light emission device can be prevented from reaching transistors by locating the transistors below the metal pixel electrode, and leakage current produced by the light of a transistor in the off state can be suppressed to prevent degradation of the image quality.

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Hitachi, Japan

Shingo Ishihara