Hitachi Maxell, Limited

Hitachi Maxwell, Ltd.

Ryuzo Fukao

Yuji Yamashita

Toshinobu Sueyoshi

Kazuhiko Daido

Kyouichi Kohama

Koji Yamaguchi

Wasao Takasugi

Yuji Kikuchi

Kiyoharu Kishimoto

Hiroyuki Tsukamoto

Tomonori Kanai

Kouji Ooae

Akira Kato

Toshio Oshima

Seiichi Asada

Hisao Kanzaki

Yoji Takeuchi

Shuichi Wada

Akio Shimizu

Kaname Tamada

Keiko Kurata

Hisanobu Mikamo

Taiji Matsumoto

Tsunemi Oiwa

Yusuke Hirai

The present invention provides an information carrier which has flat surfaces, is excellent in beautiful appearance and permits beautiful necessary printing, and a production process which permits easy and inexpensive production of such an information carrier. An IC chipand a coilconnected to the IC chip are embedded in a substratecomposed of a nonwoven fabric. The IC chip and the coil are held between two nonwoven fabrics produced according to a conventional production procedure. The laminate of the nonwoven fabrics is fed to a roller or a press and the two nonwoven fabrics are hot-pressed, whereby their mating surfaces are joined with or without an adhesive (including low-melting synthetic resin fiber) incorporated into the webs. After positioning of the coil in the thus obtained raw product of information carrier, the laminate of the nonwoven fabrics and cover sheets is cut to obtain an information carrier of predetermined shape and size.

Information carrier and process for production thereof

For producing a semiconductor module, an electrically insulating layer and an electrically conductive layer are formed on a Nickel-base metal film over a metallic surface, the electrically conductive layer is connected electrically to an electric element through an electrically conductive joint arranged between the electric element and the electrically conductive layer, at least a part of the electric element and at least a part of the electrically conductive joint are covered with a molding resin, and subsequently, the Nickel-base metal film is removed from the metallic surface so that a combination of the Nickel-base metal film, the electrically insulating layer, the electrically conductive layer, the electrically conductive joint and the molding resin is separated from the metallic surface.

Semiconductor module and producing method therefor

The object of the present invention is to provide a novel liquid crystal display material having an excellent contrast ratio, a display method and a display device using the material. The present invention uses a liquid crystal display material comprising a polymer in which a liquid crystal is dispersed in a dissolvable state or a phase separable state, wherein the liquid crystal dissolves in the polymer at high temperatures and separates from the polymer at low temperatures, and a contrast ratio (B/A) of a reflectance (A) of the display material cooled from the dissolution state at a rate of 10&deg; C./sec and a reflectance (B) of the display material cooled from the dissolution state at a rate of 4&deg; C./sec is not less than 2. The image forming state can be maintained by controlling the cooling rate from the dissolution state to maintain the liquid crystal in translucent state.

Liquid crystal display material, liquid crystal display method and liquid crystal display device

The present invention provides an information carrier which has flat surfaces, is excellent in beautiful appearance and permits beautiful necessary printing, and a production process which permits easy and inexpensive production of such an information carrier. An IC chip and a coil connected to the IC chip are embedded in a substrate composed of a nonwoven fabric. The IC chip and the coil are held between two nonwoven fabrics produced according to a conventional production procedure. The laminate of the nonwoven fabrics is fed to a roller or a press and the two nonwoven fabrics are hot-pressed, whereby their mating surfaces are joined with or without an adhesive (including low-melting synthetic resin fiber) incorporated into the webs. After positioning of the coil in the thus obtained raw product of information carrier, the laminate of the nonwoven fabrics and cover sheets is cut to obtain an information carrier of predetermined shape and size.

There is a flexible IC module utilizable for the production of contactless IC cards and a method for producing an information carrier using the flexible IC module. An IC chip and a coil are embedded in a flexible substrate comprising a nonwoven fabric or the like having compressibility in the thickness direction, self-pressure bonding property and resin impregnation property. This flexible IC module is produced in the following procedure. {circle around (1)} A first nonwoven fabric having compressibility in the thickness direction, self-pressure bonding property and resin impregnation property is placed on a bottom force . {circle around (2)} An IC chip and a coil are placed on the first nonwoven fabric after positioning them. {circle around (3)} A second nonwoven fabric is superposed on the IC chip and coil. {circle around (4)} A top force is pressed onto the second nonwoven fabric, and the first and second nonwoven fabrics, the IC chip and the coil are integrated by hot pressing.

Flexible IC module and method of its manufacture, and method of manufacturing information carrier comprising flexible IC module

The object of the present invention is to provide a polymer-dispersed liquid crystal display element which won't cause cross-talk effects and is capable of simple matrix drive. In the polymer-dispersed liquid crystal display element of the present invention, a polymer having a dielectric constant greater than that of the liquid crystal is used, and the volumetric content of the liquid crystal is not greater than that of the polymer.

Polymer-dispersed liquid crystal composition and liquid crystal display elements using the composition

The invention provides a phosphor excited by infrared rays to emit infrared rays which has a nonacicular particle shape and a particle size of 4 .mu.m or smaller after being synthesized. The phosphor preferably comprises an oxoacid salt-containing compound including at least one element selected from the group consisting of Nd, Yb and Er. The invention further provides a material having a latent image pattern comprising said phosphor and an optical reading system which use the material having a latent image pattern.

Infrared phosphor and material having latent images and optical reading

A discharge recording medium comprising a substrate and a thin metal layer which is formed on the substrate layer and is made of aluminum containing at least one metal selected from the group consisting of manganese, copper and magnesium, which has good environmental resistance and printing characteristics.

Discharge recording medium

A thermal recording medium including a base layer containing a resin having a functional group which chemically bonds with a metal having a low melting point, such as Sn-Pb alloy, and a thermal recording layer made of a thin film with low resistivity of a low melting point metal formed on said base layer such that when a part of the thermal recording layer is heated, the heated part melts and perforates to record information.

Growing community of inventors

Ibaraki-ken, Japan

Ryuzo Fukao