Sony Corporation

Dexerials Corporation

Sony Chemical & Information Device Corporation

Hiraku Akiho

Tsuneo Kusunoki

Takahiro Igarashi

Takamasa Izawa

Akihiro Kikuchi

Yutaka Okazaki

Kazuo Goto

Isao Takahashi

Wataru Ito

Satoru Sugita

Keisuke Aramaki

Junichi Sawada

Yutaka Souda

Masaki Kanno

Kazuo Nozawa

Masato Ishigaki

Hideaki Karamon

Sadayuki Nishiuchi

Toru Sugai

Kazuhiko Urayama

A compound is provided containing silicon, aluminum, strontium, europium, nitrogen, and oxygen is used that enables a red phosphor having strong luminous intensity and high luminance to be obtained, and that enables the color gamut of a white LED to be increased with the use of red phosphor. The red phosphor contains element A, europium, silicon, aluminum, oxygen, and nitrogen at the atom number ratio of the following formula: [A)Eu]SiAlON. The element A in the formula is at least one of magnesium, calcium, strontium, and barium, and m, x, y, and n in the formula satisfy the relations 3&#x3c;m&#x3c;5, 0&#x3c;x&#x3c;1, 0&#x3c;y&#x3c;2, and 0&#x3c;n&#x3c;10.

Red phosphor, method for producing red phosphor, white light source, illuminating device, and liquid crystal display device

A compound is provided containing silicon, aluminum, strontium, europium, nitrogen, and oxygen is used that enables a red phosphor having strong luminous intensity and high luminance to be obtained, and that enables the color gamut of a white LED to be increased with the use of the red phosphor. The red phosphor contains an element A, europium, silicon, aluminum, oxygen, and nitrogen at the atom number ratio of the following formula: [AEu]SiAlON. The element A in the formula is at least one of magnesium, calcium, strontium, and barium, and m, x, y, and n in the formula satisfy the relations 3&#x3c;m&#x3c;5, 0&#x3c;x&#x3c;1, 0&#x3c;y&#x3c;2, and 0&#x3c;n&#x3c;10.

A red phosphor of high efficiency and a method for producing it are provided. A white light source and an illumination device that allow illumination with the pure white color using the red phosphor are also provided. In addition, a liquid crystal display device using the red phosphor and exhibiting good color reproducing performance is provided. The red phosphor contains an element A, europium (Eu), silicon (Si), carbon (C), oxygen (O) and nitrogen (N) in the ratios of the numbers of atoms of the following compositional formula (1):[Chemical Formula 1][AEu][SiC]ON&#x2003;&#x2003; compositional formula (1)where the element A is at least one of magnesium (Mg), calcium (Ca), strontium (Sr) and barium (Ba), and where m, x and n in the compositional formula (1) satisfy the relationships of 3&#x3c;m&#x3c;5, 0&#x3c;x&#x3c;1, 0&#x3c;y&#x3c;2 and 0&#x3c;n&#x3c;10 (FIG.A).

A compound is provided containing silicon, aluminum, strontium, europium, nitrogen, and oxygen is used that enables a red phosphor having strong luminous intensity and high luminance to be obtained, and that enables the color gamut of a white LED to be increased with the use of the red phosphor. The red phosphor contains an element A, curopium, silicon, aluminum, oxygen, and nitrogen at the atom number ratio of the following formula: [AEu]SiAlON. The element A in the formula is at least one of magnesium, calcium, strontium, and barium, and m, x, y, and n in the formula satisfy the relations 3&#x3c;m&#x3c;5, 0&#x3c;x&#x3c;1, 0&#x3c;y&#x3c;2, and 0&#x3c;n&#x3c;10.

A red phosphor of high efficiency and a method for producing it are provided. A white light source and an illumination device that allow illumination with the pure white color using the red phosphor are also provided. In addition, a liquid crystal display device using the red phosphor and exhibiting good color reproducing performance is provided. The red phosphor contains an element A, europium (Eu), silicon (Si), carbon (C), oxygen (O) and nitrogen (N) in the ratios of the numbers of atoms of the following compositional formula (1):[Chemical Formula 1][AEu][SiC]ON&#x2003;&#x2003;compositional formula (1)where the element A is at least one of magnesium (Mg), calcium (Ca), strontium (Sr) and barium (Ba), and where m, x and n in the compositional formula (1) satisfy the relationships of 3&#x3c;m&#x3c;5, 0&#x3c;x&#x3c;1, 0&#x3c;y&#x3c;2 and 0&#x3c;n&#x3c;10 (FIG.A).

The present invention provides an antenna apparatus () for use in a non-contact type IC card into and from which data can be written and read by an electronic apparatus having a communication function, by virtue of inductive coupling. The antenna apparatus includes a loop coil () and a magnetic member (). The loop coil () is produced by winding a conductive wire in a plane and configured to perform the inductive coupling with the electronic apparatus. The magnetic member () covers one region () of the loop coil, provided at one side, from one surface of the loop coil, passes through the loop coil, and covers the other region () of the loop coil, provided at the other side, from the other surface of the loop coil.

Antenna apparatus

To provide a magnetic powder production method, a magnetic sheet production method, and an antenna module production method that are capable of reducing a size of magnetic particles, achieving thinning and a low loss, and improving magnetic permeability without lowering it. At least two oxide-based magnetic materials are mixed, preliminarily calcined, and pulverized. The pulverized magnetic materials are typically formed into a paste by being dispersed in an organic solvent, and the magnetic materials are applied onto a film after being subjected to defoaming processing. Accordingly, a sheet-like magnetic material is formed. The sheet-like magnetic material is cut into predetermined sizes so as to be fragmented into particles, with the result that magnetic particles are formed.

Magnetic powder production method

A magnetic material used for an antenna module of an RFID (radio frequency identification) system that uses a communication frequency of 13.56 MHz, includes an Fe alloy magnetic material containing Fe as a primary component, and Si and Al added thereto, and phosphorous of 0.2 to 0.5 wt % added to the Fe alloy magnetic material.

Magnetic material, magnetic sheet, and portable electronic apparatus

An antenna module and a portable communication terminal equipped with the antenna module are provided. The antenna module has a space-saving design, and also has both a capability for long communication distance for a tag function and a capability for wide communication range for a reader/writer function. A first antenna coil () for communication with a reader/writer and a second antenna coil () for communication with an IC tag are disposed on a base substrate (). The first antenna coil () is disposed in an outermost periphery section of the base substrate () so that a communication distance is attained. The second antenna coil () is disposed within an inner periphery of the first antenna coil () so as to achieve overall size reduction of the module.

Antenna module and portable communication terminal equipped with the antenna module

This invention provides an antenna apparatus () for use in a non-contact type IC card into and from which data can be written and read by electronic apparatuses having a communication function, by virtue of inductive coupling. The antenna apparatus comprises a loop coil () and a magnetic member (). The loop coil is produced by winding a conductive wire in a plane and configured to perform the inductive coupling. The magnetic member covers one region () of the loop coil, provided at one side, from one surface of the loop coil, passes through the loop coil, and covers the other region () of the loop coil, provided at the other side, from the other surface of the loop coil. The entire region of the loop coil is thus covered.

A magnetic core member, an antenna module, and a portable communication terminal having this, which have a configuration capable of satisfying enhancement of communication characteristics of antenna coils as well as their sufficient electromagnetic shielding function from a shield plate. A magnetic core member () is disposed between an antenna substrate having antenna coils (), () formed therein and a conductive shield plate (), and is formed by filling an insulating material () with a magnetic powder (). The magnetic core member () has a two-layered structure including a first layer (A) and a second layer (B), thereby making a filling rate of the magnetic powder () in the first layer (A) be lower than that of the magnetic powder () in the second layer (B) so that a first surface () on a side opposed to the antenna substrate () and a second surface () on a side opposed to the shield plate () have magnetic properties different from each other.

Magnetic core member, antenna module, and mobile communication terminal having the same

A portable type information processing terminal device is provided which includes a substrate carrying a substantially annular antenna coil thereon, a signal processing integrated circuit element arranged inside the antenna coil, a magnetic plate arranged under the substrate and a metal plate arranged under the magnetic plate, which are integrally formed and arranged on one or more than one metal parts including a battery pack. The metal plate is used to substantially regulate the resonance frequency of the antenna coil so that it is allowed to be arranged in a cabinet of the portable device.

Portable type information processing terminal device

An antenna device () is provided that is used in a recorder and/or writer destined for writing and reading data to and from a contactless IC card (). The antenna device () includes a loop coil () that radiates a magnetic field, magnetically couples with a loop coil () provided in the IC card (), and sends and receives data to and from the IC card (). The loop coil () is formed asymmetric for the winding sections thereof opposite to each other across the center of the loop coil () to be different in interval from each other.

Growing community of inventors

Miyagi, Japan

Hiraku Akiho