Mitsubishi Chemical Corporation

Rohm Co., Ltd.

Hitachi, Ltd.

Pioneer Corporation

Kyoto University

Mitsubishi Kasei Corporation

Keishin Handa

Hiroyuki Yano

Shinji Aramaki

Masaya Nogi

Akira Nagai

Yoshitaka Takezawa

Takashi Kurihara

Takao Miwa

Toshiyuki Miyadera

Tohru Maruno

Toshio Fujii

Tohru Matsuura

Tetsuya Aya

Nobutatsu Koshoubu

Shin-ichiro Iwamoto

Junji Sugiyama

Yoshimasa Sakai

Yasunori Matsushita

Shinsuke Ifuku

Katsuya Funayama

Yoshinao Shinohara

Manabu Nishikawa

Masahiro Kobashi

Hiroyuki Watanabe

Kenichirou Motoda

Kentarou Abe

Kyosuke Watanabe

Takashi Fujiwara

Provided is a nanofiber sheet that sufficiently refined by fibrillation and has high crystallinity of cellulose fiber and can realize a fiber-reinforced composite material exhibiting high transparency, a high elastic modulus, a low coefficient of linear thermal expansion, and high heat resistance and being high in flatness and smoothness. This nanofiber sheet includes crystalline cellulose as the main component and a lignin in an amount of from 10 ppm to 10 wt %. When a fiber/resin composite material obtained by impregnating the nanofiber sheet with tricyclodecane dimethacrylate, subjecting the impregnated product to UV-curing at 20 J/cm, and heating the cured product in vacuum at 160&#xb0; C. for two hours includes 60 wt % of the cured tricyclodecane dimethacrylate and 40 wt % of nanofiber, the following physical characteristics (i) to (iii) are satisfied: (i) the parallel light transmittance of light of a wavelength of 600 nm at a sheet thickness of 100 &#x3bc;m is 70% or more; (ii) the Young's modulus is 5.0 GPa or more; and (iii) the coefficient of linear thermal expansion is 20 ppm/K or less.

Nanofiber sheet, process for producing the same, and fiber-reinforced composite material

An electroluminescent element wherein an electrode, an electroluminescent layer, a high-refractive-index layer(a transparent electrode layerA and an intermediate layerB) and a translucent bodyare sequentially laminated. On light-emitting-surface side of the high-refractive-index layerand the translucent body, layersA andB individually having a light-scattering function are provided respectively. The presence of the light-scattering layersA andB on the light-emitting-surface side of the high-refractive-index layerand the translucent bodyenables to emit light from the electroluminescent element through multiple scattering of guided light, which travels inside the translucent bodyin the planar direction while being totally reflected by the interface between the translucent bodyand air, and other guided light, which travels inside a thin film including the electroluminescent layerand the high-refractive-index layer

Electroluminescence element and lighting apparatus

The electroluminescent device successively comprises a cathode, an electroluminescent layer, a transparent electrode layer, an evanescent light-scattering layer comprising a matrix composed of a low-refractive material containing light-scattering particles, and a transparent sheet/plate. Such an electroluminescent device is decreased in total reflection not only at a boundary surface between a transparent substrate and an outside air layer but also at a boundary surface of the transparent electrode layer on its light extraction side, and therefore, is considerably improved in light extraction efficiency. In addition, in the electroluminescent device provided with a barrier layer, the transparent electrode layer and the electroluminescent layer can be well protected so that deterioration of electroluminescent pigments and occurrence of dark spots can be effectively prevented, resulting in enhanced-life of the device.

Extracting light from an electroluminescent layer

The present invention relates to a fiber-reinforced composite material and a method for manufacturing the same, and also relates to a transparent multilayered sheet, a circuit board, and an optical waveguide.

Fiber-reinforced composite material, method for manufacturing the same, and applications thereof

The electroluminescent device successively comprises a cathode, an electroluminescent layer, a transparent electrode layer, an evanescent light-scattering layer comprising a matrix composed of a low-refractive material containing light-scattering particles, and a transparent sheet/plate. Such an electroluminescent device is decreased in total reflection not only at a boundary surface between a transparent substrate and an outside air layer but also at a boundary surface of the transparent electrode layer on its light extraction side, and therefore, is considerably improved in light extraction efficiency. In addition, in the electroluminescent device provided with a barrier layer, the transparent electrode layer and the electroluminescent layer can be well protected so that deterioration of electroluminescent pigments and occurrence of dark spots can be effectively prevented, resulting in enhanced life of the device.

Electroluminescent device with a low refractive layer and a light scattering layer

There is provided a fiber-reinforced composite material containing fibers having an average fiber diameter of 4 to 200 nm and a matrix material, the composite material having a visible light transmittance of 60% or more at a wavelength of 400 to 700 nm, which is a conversion value based on a thickness of 50 &#x3bc;m. A fiber-reinforced composite material composed of a matrix material and a fiber aggregate impregnated therewith is provided, in which when a segment length of a bright region corresponding to a pore region of the fiber aggregate is represented by L, which is obtained by statistical analysis of a unidirectional run-length image formed from a binary image obtained by binarization of a scanning electron microscopic image of the fiber aggregate, the total length of segments that satisfy L&#x2267;4.5 &#x3bc;m is 30% or less of the total analyzed length. A transparent multilayered sheet, a circuit board, and an optical waveguide are provided which use a transparent substrate formed from this fiber-reinforced composite material.

Fiber-reinforced composite material, method for manufacturing the same and applications thereof

A field effect transistor comprising, as provided on a support substrate, an insulation layer, a gate electrode and an organic semiconductor layer separated by the insulation layer, a source electrode and a drain electrode provided so as to contact the organic semiconductor layer, wherein elongation &#x3b5;(%) at the yield point of the insulation layer is larger than elongation &#x3b5;(%) at the yield point of the support substrate.

Field effect transistor

Projection lens

The essence of the present invention lies in an optical sheet made of transparent resin having a visible light transmittance of not less than 80%, a glass transition temperature of not lower than 150&deg; C. and a thickness of from 0.2 to 1.5 mm, which exhibits a birefringence index of not higher than 15 nm, a surface roughness Ra of not more than 0.1 &mgr;m and an impact strength of not less than 600 gf&middot;cm as calculated in terms of dropping ball breakdown energy determined by Du Pont process impact resistance test.

Optical sheet and optical part made of transparent resin, and method of fabricating thereof

A porous film or sheet including a resin composition mainly of an ultra-high molecular weight polyethylene having a viscosity-average molecular weight of not less than 500,000, and having a thickness of 10 to 100 .mu.m, an air permeability of 20 to 2,000 sec/100 cc, a porosity of 15 to 80%, a pin puncture strength (per 25 .mu.m of film thickness) of not less than 120 g, a thermal-shut down temperature of 90.degree. to 150.degree. C. and a heat puncture temperature of not less than 160.degree. C., and a process for producing the same.

Process of making porous films or sheets

This invention provides an extensible film or sheet comprising 100 to 60 parts by weight of an ethylene copolymer having a density of less than 0.910 g/cm.sup.3 and 0 to 40 parts by weight of a linear polyethylene having a density of 0.910 to 0.945 g/cm.sup.3, specified by the following properties:

Extensible film or sheet and process for producing the same

Growing community of inventors

Kanagawa, Japan

Keishin Handa