Nitto-denko Corporation

Matsushita Electric Industrial Co., Ltd.

Petroleum Energy Center

Panasonic Corporation

Sumitomo Rubber Industries Limited

Kao Corporation

Nitto Electric Industrial Co., Ltd.

Kenichi Ikeda

Hisao Hachisuka

Toshiyuki Kawashima

Nobuharu Tahara

Hiroshi Yamaguchi

Masatoshi Maeda

Akira Shimazu

Yoshiharu Yamamoto

Masahiko Hirose

Yasuyuki Tanaka

Amane Mochizuki

Satoshi Aoki

Hiroshi Shimizu

Hiroki Ito

Shigekazu Yamagishi

Osamu Sakai

Yoshitomi Nagaoka

Masaharu Hayashi

Hiroshi Miyai

Yasuo Nakajima

Yoshiki Hayashida

Kazuhiko Shibata

Kenichi Inoue

Tomomi Ohara

Shinichi Nakade

Tomoo Yamaguchi

Yoshiyasu Kamiyama

Eiji Kanamaru

Yuji Nishida

Tsugio Murao

Akihito Kuga

Ping Xu

Masataka Tada

Toshiaki Masaki

Osamu Maekawa

Hitoshi Takano

Yoshihiko Kondo

Yasuo Nakatasuka

Shouichi Yamamoto

Kazuo Oouchi

Toru Tatsumi

Tomoko Matsushita

Tsukasa Miyazaki

An antireflection structure that can be formed in a desired shape, and a method for manufacturing the same are provided. An antireflection structureincludes a resin layerformed in a desired shape, and inorganic material fine particlesdispersed inside the resin layer. A plurality of fine concaveshaving an average inner diameter shorter than or equal to the minimum wavelength of light whose reflection should be suppressed are formed at the surface of the antireflection structure, thereby reducing the equivalent refractive index at the surface of the resin layer. The fine concavesare formed by, after forming a composite material in which the nanosized inorganic material fine particlesare dispersed in the resin layer, dissolving the inorganic material fine particlesdispersed at the surface of the resin layer, using a solvent that dissolves only the inorganic material fine particles

Antireflection structure, lens barrel including antireflection structure, method for manufacturing antireflection structure

A flowable insulating resinis placed in a sheet-like molding die space and conductive magnetic particlesare dispersed in the insulating resin. A first magnetic field Gis acted in the sheet thickness direction on the position where a conductive path is to be formed in the die space, and conductive magnetic particlesare locally collected together to form a conductive path. Simultaneously, a second magnetic field Gis acted in the sheet thickness direction on the intermediate region and the magnetic field Gis moved in the lateral direction to move conductive magnetic particlesleft in the intermediate region to join the collection forming the conductive path. As a result, the number of the conductive magnetic particles left in the insulating resin becomes smaller.

Production method of anisotropic conductive sheet

The present invention provides a method of manufacturing a wiring board, including the steps of preparing a composite sheet having an adherent sheet containing a thermosetting resin adhered to a porous film or impregnated with at least a part thereof, laminating at least the composite sheet on a wiring layer having a wiring pattern formed on an insulating layer, and heating and pressurizing the laminated product thus obtained or heating and pressurizing it after the pressurization to integrate the laminated product.

Method of manufacturing wiring board

A method of manufacturing a multilayer wiring board according to the present invention comprises the step of heating and pressurizing a stacked product to be integrated in a state in which a plurality of double-sided wiring boards () having a wiring pattern () formed on both surfaces of an insulating layer () are laminated through a prepreg () obtained by impregnating a resin porous film with a thermosetting resin. The present invention is advantageous to mass production because a gap for forming an insulating layer can easily be controlled, and furthermore, can provide thinner layers of the whole board and is also advantageous to the flattening of the surface of the board.

Method for manufacturing multilayer wiring board

The present invention provides a method of manufacturing a multilayer wiring board comprising the step of impregnating a raw material composition of a thermosetting resin in a porous laminated product including two or more porous layers and a wiring layer provided between the porous layers and formed on any of the porous layers and of half curing or curing them. Moreover, the present invention provides a multilayer wiring board having such a lamination structure that two or more porous layers and a wiring layer provided between the porous layers and formed on any of the porous layers are integrated through an impregnated and cured thermosetting resin.

Method of manufacturing multilayer wiring board

The present invention provides a method of manufacturing a metal foil laminated product including the steps of forming a bonding layer containing a thermosetting resin on a lower wiring layer, a metal layer or an insulating layer, provisionally bonding a porous layer having a releasing film attached thereto onto a surface of the bonding layer, peeling the releasing film from the porous layer, laminating a metal foil on the porous layer obtained after the peeling, and heating and pressurizing the laminated product to transfer the bonding layer to the metal foil and thereby integrating them. Furthermore, the present invention provides a method of manufacturing a wiring board comprising the steps of manufacturing a metal foil laminated product by the above manufacturing methods, and providing a pattern on the metal foil of the metal foil laminated product, thereby forming a wiring layer.

Method of manufacturing metal foil

A rear-projection screen , including at least a lenticular lens sheet and a Fresnel lens sheet , is configured so that the lenticular lens sheet contains, in a base material thereof made of a resin, light diffusing microparticles made of a resin having a refractive index different from a refractive index of the base material, and the light diffusing microparticles satisfy 0.5 &mgr;m&lE;&Dgr;N1&times;d1&lE;0.9 &mgr;m, where &Dgr;N1 represents a difference between a refractive index of the light diffusing microparticles and a refractive index of the base material of the lenticular lens sheet, and d1 represents an average particle diameter of the light diffusing microparticles. With this, a rear-projection screen with small wavelength dependency of diffusion characteristics can be provided utilizing only resins with general properties.

Rear-projection screen and rear-projection image display

A method of metal layer formation which can satisfactorily eliminate the problems caused by plating solution infiltration and is sufficiently effective in reducing the permittivity of an insulating layer; and a metal foil-based layered product obtainable by the method. The method is for forming a metal layer on a surface of a porous resin layer and includes: a step in which a porous resin layer having a dense layer as a surface part thereof is used as the porous resin layer and a thin metal film is formed on the surface of the dense layer by a dry process; and a step in which a metal film is formed on the surface of the thin metal film by plating.

Method of metal layer formation and metal foil-based layered product

Color lights from image projecting sections ( ) that enlarge and project images of red, green and blue, respectively, are made incident on a transparent screen at different angles of incidence, so that image synthesis is carried out. The color lights projected are converted into telecentric light by a Fresnel lens ( ), and after principal rays of the respective color lights are converted into substantially parallel rays by a color shading eliminating means ( ) provided with lenticular lenses on both sides thereof, the rays are incident on a light diffusing means ( ). The light diffusing means ( ) is formed with a transparent substrate sheet and a plurality of transparent micro beads made to adhere onto a light-incident surface of the substrate sheet with an opaque adhesive. Image light passes through light transmitting portions between the substrate sheet and the micro beads to be diffused. This configuration enables to provide a rear-projection image display whose display images are hardly affected by external light, which has an increased angle of visibility, and which undergoes less color shading, without a decrease in light utilization efficiency.

Rear projection type image display unit

The present invention provides a method of manufacturing a wiring board, including the steps of forming a through hole on a prepreg having a releasing resin film on at least one of its surfaces, the prepreg being obtained by impregnating a porous film having a thickness of 5 to 90 &mgr;m and a porosity of 30 to 98% with a half cured thermosetting resin, filling the through hole with a conductive paste containing a conductive filler, peeling the resin film, laminating a metal foil on a surface from which the resin film is peeled, and heating and pressurizing the laminated product. Moreover, the present invention provides a wiring board including an insulating layer obtained by impregnating a porous film having a thickness of 5 to 90 &mgr;m and a porosity of 30 to 98% with a thermosetting resin and curing them, and a conductive connection structure between wiring layers in which a through hole provided on the insulating layer is filled with a conductive paste, wherein the conductive connection structure has the conductive filler at only a boundary surface with the porous film and in an inner part thereof.

Wiring board and method of manufacturing the same

The present invention provides a method of manufacturing a metal foil laminated plate comprising the step of forming and attaching a resin porous layer onto a metal foil by a wet coagulating method, wherein a metal foil including a conductive bump having an almost equal height on a film forming side surface is used. The present invention provides a metal foil laminated plate comprising a metal foil including a conductive bump having an almost equal height and a resin porous layer laminated integrally, the conductive bump being exposed. The present invention provides another metal foil laminated plate comprising a metal foil including a conductive bump having an almost equal height, a resin porous layer laminated integrally, and a thermosetting resin impregnated in a hole of the resin porous layer, in which the conductive bump is exposed from the resin porous layer.

Metal foil laminated plate and method of manufacturing the same

A rear-projection screen including at least a lenticular lens sheet and a Fresnel lens sheet is configured so that the lenticular lens sheet contains, in a base material thereof made of a resin, light diffusing microparticles made of a resin having a refractive index different from a refractive index of the base material, and the light diffusing microparticles satisfy 0.5 &mgr;m&lE;&Dgr;N &times;d &lE;0.9 &mgr;m, where &Dgr;N represents a difference between a refractive index of the light diffusing microparticles and a refractive index of the base material of the lenticular lens sheet, and d represents an average particle diameter of the light diffusing microparticles. With this, a rear-projection screen with small wavelength dependency of diffusion characteristics can be provided utilizing only resins with general properties.

A wiring board prepreg manufacturing method of the present invention includes the step of depositing and adhering a porous layer made of aromatic polyamide or polyimide onto a heat resistant base material sheet according to a wet gelation process, and the step of impregnating at least one portion of a raw material composition of thermoset resin with insides of pores of the porous layer adhered to the heat resistant base material sheet. Moreover, it is preferable that the step of impregnating the base material composition of the thermoset resin includes the step of applying a raw material liquid of the thermoset resin containing a solvent to a surface of a base material, the step of removing the solvent from the applied raw material liquid so as to obtain a solid coating film, and the step of while heating the solid coating film, laminating and pressurizing the film together with the base material onto the porous layer so as to impregnate at least one portion of the solid coating film.

Wiring board prepreg and manufacturing method thereof

A reverse osmosis composite membrane comprises a sponge layer, and a separation layer formed on a surface of the sponge layer, wherein at least one substance selected from the group consisting of an electrically neutral organic substance and an electrically neutral polymer is present in the separation layer or a surface of the separation layer is coated with at least one substance selected from the group consisting of an electrically neutral organic substance and an electrically neutral polymer, and wherein the specific surface area of the layer in which the at least one substance is present or the separation layer before the surface coating is in the range of 2 to 1,000. The reverse osmosis composite membrane has a high salt rejection, a high water permeability, and a high fouling tolerance, and permits practical desalination at a relatively low pressure.

Reverse osmosis composite membrane and reverse osmosis treatment method for water using the same

A method for separating specific hydrocarbons from a hydrocarbon mixture of hydrocarbons using a membrane made of a fluorine-containing polyimide resin having high separation ability with regard to certain hydrocarbons, and a high resistance to hydrocarbon is disclosed. The method is of high practicability with regard to performance and cost. Certain hydrocarbons permeate selectively and are separated by bringing a hydrocarbon mixture into contact with a membrane having a fluorine-containing polyimide resin as its main component, whose main component is the minimum repeating unit expressed by

Method for selectively separating hydrocarbons

Growing community of inventors

Osaka, Japan

Kenichi Ikeda