Nec Corporation

Samsung Sdi Co., Inc.

Samsung Mobile Display Co., Ltd.

Samsung Electronics Co., Ltd.

Samsung Display Co., Ltd.

Satoru Toguchi

Hitoshi Ishikawa

Atsushi Oda

Yukiko Morioka

Hiroshi Tada

Atsushi Kamijo

Tomohisa Gotoh

Hiroyuki Endoh

Yasuharu Onishi

Hisanao Tsuge

Noriko Takewaki

Junichi Yamanari

Atushi Oda

Kazuhiko Hayashi

Kenji Mori

Katsumi Maeda

Akira Hirano

Etsuo Hasegawa

Hideki Asada

Hideaki Numata

Masahiko Ishida

Tomohiko Otose

Toshihiko Kanayama

Hidefumi Hiura

Tsutomu Uezono

Tetsuya Tada

Taizou Tanaka

Hitoshi Ishiskawa

A switching element comprises a source electrode, a drain electrode arranged apart from the source electrode, an active layer in contact with the electrodes, and a gate electrode arranged apart from the source and drain electrodes and being in contact with the active layer with a gate insulating layer interposed therebetween. The active layer is formed of a dispersion film containing predetermined carbon nanotubes and a predetermined polyether compound.

Switching element and method for fabricating same

An organic EL device including at least an anode, a cathode and an organic light-emitting zone with high brightness is provided. A mixture containing at least two compounds is used for a light-emitting zone and the spectrum of the luminescence from light-emitting zone includes at least one peak at a wavelength which is different from neither of fluorescent peak positions of the compounds included in light-emitting zone.

Organic electroluminescence device

A problem of a switching element using for the active layer a carbon nanotube (CNT) dispersion film that can be manufactured at low temperature has been that sufficient electrical contact and thermal conductivity between the CNTs and the source and drain electrode surfaces are not obtained. The switching element of the present invention has a structure in which a mixed layer of carbon nanotubes and a metal material, and a metal layer of the metal material are laminated in this order on source and drain electrodes, and thereby, the CNT-dispersed film and the electrode surfaces can be in firm electrical, mechanical, and thermal contact with each other. Thus, a switching element exhibiting good and stable transistor characteristics is obtained with a low-temperature, convenient, and low-cost process.

Switching element including carbon nanotubes and method for manufacturing the same

Disclosed is a switching element provided with a gate dielectric film and an active layer disposed in contact with the gate dielectric film. The active layer includes carbon nanotubes, and the gate dielectric film includes non-conjugated polymer containing an aromatic ring in a side chain.

Switching element and manufacturing method thereof

In a switching element using, for the active layer, a carbon nanotube (CNT) dispersed film which can be manufactured at low temperatures, the interaction between the CNT and the surface of the gate insulating film is insufficient. For this reason, a problem of such a switching element is that the amount of CNT fixed in the channel region is insufficient, resulting in insufficient uniformity. In the switching element of the exemplary embodiment, a gate insulating film is formed of a nonconjugated polymer material containing, in the main chain, an aromatic group and a substituted or unsubstituted alkylene or alkyleneoxy group having 2 or more carbon atoms as repeating units. As a result, the interaction between the CNT and the surface of the gate insulating film is enhanced while maintaining the flexibility of the gate insulating film, and the amount of CNT fixed in the channel region can be increased. Thereby, a switching element having good and stable transistor characteristics can be obtained by a low-temperature, simple, and inexpensive process.

Switching element

A semiconductor device has a structure in which a light-emitting layer of an organic material or the like is sandwiched between a work function controlled single-wall carbon nanotube cathode encapsulating a donor having a low ionization potential and a work function controlled single-wall carbon nanotube anode encapsulating an acceptor having a high electron affinity. A semiconductor device represented by an organic field-effect light-emitting element and a method of manufacturing the same are provided. The semiconductor device and the method of manufacturing the same make it possible to improve characteristics and performance, such as reduction in light-emission starting voltage and a high luminous efficiency, to improve reliability, such as an increase in life, and to improve productivity, such as reduction in manufacturing cost.

Semiconductor device and method of manufacturing the same

Disclosed is a method of manufacturing a substrate for an organic EL device, the method comprising the step of: filling grooves of the optical element with sol-gel coating solution or organic metal cracking solution when a diffraction gratingis formed on the glass substrate, wherein an encapsulation memberis mounted to the glass substratein order to fill the groovewith the coating solution, and the coating solution is injected into a gap between the encapsulation memberand the diffraction grating, so that the organic EL device can be stably manufactured with low variation between optical properties according to positions of the substrate and with improved luminous efficiency. Further, the present invention provides a method of manufacturing a substrate for an organic EL device having a glass substratewith an diffraction grating, wherein the dispersion solution of particles is applied to the glass substrateto form the diffraction grating, so that the organic EL device can be stably manufactured with low variation between the optical properties according to the positions of the substrate and with the improved luminous efficiency.

Method of manufacturing a substrate for organic electroluminescent device

Provided is a substrate for a light-emitting device having good light emitting efficiency and light-emitting device using the substrate. A light transparent substrateis layered with a first layerhaving a refractive index higher than that of the light transparent substrateand a second layerhaving a refractive index lower than that of the first layer. The refractive index of the first layeris set to be 1.35 times as high as that of the second layer. With this layer structure, in an emitting layer of the light-emitting device, a wave front of a spherical wave form exited from a point light source in the front direction is converted into that of a plane wave form, and exited outside the substrate at a high efficiency.

Substrate of emitting device and emitting device using the same

The present invention relates to an organic electroluminescent device. There is provided an organic electroluminescent device with a good luminescence property and high luminous efficiency in which the organic electroluminescent device has a diffraction gratingon the surface of the substrateand an organic EL layerincluding an emission layer between an anodean a cathodevia an intermediate layer

Electroluminescent display device

Provided is a light emitting diode and method for fabricating the same, and a display device using the same, wherein the light emitting diode at least comprises a high refractive index layer on a light transmissive substrate; and an organic electroluminescence (EL) element formed of one organic thin layer or a plurality of organic thin layers interposed between a transparent first electrode and a second electrode formed on the high refractive index layer, and the high refractive index layer has a refractive index higher than that of an emitting layer or has a refractive index of 1.65 or more, and an interface between the high refractive index layer and the light transmissive substrate is roughed to have its center line average roughness in a range of 0.01 &#x3bc;m to 0.6 &#x3bc;m so that light leakage is be prevented and light extraction efficiency becomes higher.

Light-emitting diode, its manufacturing method, and display device using the same

A communication system includes: at least one light-emitting device for emitting a light; and at least one light-receiving device for receiving the light emitted from the at least one light-emitting device. The light-emitting device further includes: at least one driver unit for generating a modified current based on an externally entered information signal; and at least one light-emitting unit operatively and functionally coupled to the at least one driver unit for receiving the modified current and emitting a modified signal light including any information based on the modified current. The at least one light-emitting unit includes at least one electroluminescence element.

Light emitting device and communication system

Provided is a substrate for a light-emitting device having good light emitting efficiency and light-emitting device using the substrate. A light transparent substrateis layered with a first layerhaving a refractive index higher than that of the light transparent substrateand a s second layerhaving a refractive index lower than that of the first layer. The refractive index of the first layeris set to be 1.35 times as high as that of the second layerWith this layer structure, in an emitting layer of the light-emitting device, a wave front of a spherical wave form exited from a point light source in the front direction is converted into that of a plane wave form, and exited outside the substrate at a high efficiency.

Optical control portion with graded metal dopant to control refractive index

An organic thin film transistor having an insulator layer formed of a polymer compound having a repeat unit represented by the following formula [1] is disclosed: wherein R, Rand Rare each independently a hydrogen atom or a methyl group, Ris a hydrogen atom or a linear, branched or bridged cyclic hydrocarbon group having 1 to 12 carbon atoms, and x and y are molar ratio and are any number satisfying x +y=1, 0&#x3c;x&#x2266;1 and 0&#x2266;y&#x3c;1.

Transistor using organic material having a bridged cyclic hydrocarbon lactone structure and process for producing the same

The present invention uses a substrate for an optical element comprising a light scattering unit that scatters visible light, and a light transmissive opening that transmits the visible light in a light transparent substrate transmitting the visible light, as a light extraction substrate of the organic electroluminescence element. With this, a substrate for an optical element, an organic electroluminescence element, and an organic electroluminescence display device are provided that improves the light extraction efficiency to outside of the substrate and also improves the light extraction efficiency by obtaining a high luminance organic electroluminescence element.

Substrate for optical element, organic electroluminescence element and organic electroluminescence display device

An organic electroluminescence material of the present invention includes, in order to provide an durable organic EL device emitting light of high brightness, a compound shown by the general formula (A-I) or (B-I) (as explained in the specification) wherein, Ato Awhich may be the same or different, are independently each a substituent shown by the general formula (A-II) (as explained in the specification): and a, b, and bare independently each an aryl group which may be substituted, ahaving at least one substituent shown by the general formula (B-II) (as explained in the specification), and band beach having at least one substituent shown by the general formula (B-III) (as explained in the specification), and band bmay be the same of different.

Growing community of inventors

Tokyo, Japan

Satoru Toguchi