Sony Corporation

Dexerials Corporation

Tatsuo Kumura

Tomio Kobayashi

Makoto Kubota

Heikichi Sato

Yusuke Kubo

Kazushi Yamauchi

Yoshito Ikeda

Hiroyuki Ryoson

Hideaki Karamon

Katsumi Sakata

Muneyuki Ogata

Junichi Saito

Atsushi Suzuki

Kazuhiko Suzuki

Yoshihiro Kato

Keisuke Aramaki

Yoshiyuki Kunito

Masatoshi Hayakawa

Junichi Honda

Naoto Kojima

Akio Mishima

Hideaki Ojima

Fusashige Tokutake

Akira Urai

Yoshimi Takahashi

Kaoru Aoki

Hideaki Matsuyama

Shoichi Kano

Yukari Utsumi

Etsuo Izu

Ikuko Sato

Toshito Ikeda

Hiroya Eguchi

Provided is a semiconductor device having excellent heat radiation performance and electromagnetic wave suppression effect. A semiconductor devicecomprises: a semiconductor elementformed on a substrate; a conductive shield canhaving an opening hole; a conductive cooling memberlocated above the conductive shield can; a heat conductive sheetformed between the semiconductor elementand the conductive cooling memberat least through the opening hole; and a conductive memberelectrically connecting the conductive shield canand the conductive cooling member

Semiconductor device

Provided is a semiconductor device having excellent heat transferring performance and electromagnetic wave suppression effect. A semiconductor devicecomprises: a semiconductor elementformed on a substrate; a conductive shield canhaving an opening, covering at least a part of the semiconductor element, and connected to a ground; a cooling memberlocated above the conductive shield can; and an electromagnetic wave absorbing thermal conductive sheetformed between the semiconductor elementand the cooling memberat least through the openingof the conductive shield can

Semiconductor device having an electromagnetic wave absorbing thermal conductive sheet between a semiconductor element and a cooling member

Disclosed is an electromagnetic wave absorbing heat conductive sheet having superior heat conductivity and electromagnetic wave absorbency. The electromagnetic wave absorbing heat conductive sheet comprises a polymer matrix component; a magnetic metal power; and a fibrous heat conductive filler oriented in one direction.

Electromagnetic wave absorbing heat conductive sheet, method for producing electromagnetic wave absorbing heat conductive sheet, and semiconductor device

Provided is a contactless power supply antenna device that has raised power transmission efficiency while also enabling size-reduction for mounting on a wearable terminal or the like. The antenna device includes a power transmission antenna () and a power reception antenna (). The power transmission antenna () includes: a magnetic core including two magnetic plates () that face each other, a magnetic material-containing connecting portion () that connects at least part of an end section of each of the two magnetic plates (), and a space () between the two magnetic plates (); and a power transmission coil () disposed on at least one of the two magnetic plates () at a side thereof that faces the space (). The power reception antenna () includes a power reception coil () and is positionable in the space ().

Antenna device and electronic apparatus

A coil module is provided which has been reduced in size and thickness by incorporating a material and a structure resistant to magnetic saturation. The coil module includes a magnetic shielding layer containing a magnetic material, and a spiral coil. The magnetic shielding layer has a plurality of magnetic resin layers containing magnetic particles, and at least a portion of the spiral coil is buried in a portion of the magnetic resin layers. This allows a reduction in size and thickness while achieving a heat dissipation effect by the magnetic resin layers. In addition, since magnetic resin layers resistant to magnetic saturation are provided, the coil inductance changes only slightly even in an environment where a strong magnetic field is applied, and thus stable communication can be provided.

Coil module

A composition for electromagnetic wave suppression and heat radiation includes: a matrix composed of a high molecular material or a low molecular material; and a magnetic particle filled in the matrix upon mixing a magnetic powder having a relation of {(tap density)/density}&#x2267;0.58 with the matrix.

Composition for electromagnetic wave suppression and heat radiation and method for manufacturing composition for electromagnetic wave suppression and heat radiation

Amorphous soft magnetic material

A magnetic head comprising a pair of magnetic core halves each having a magnetic core film sandwiched between a pair of non-magnetic substrates, said magnetic core halves being abutted to each other with the end faces of the magnetic core films facing each other, with a magnetic gap being defined in an interface of abutment of said magnetic core films, wherein the magnetic core film is of a laminated magnetic film structure comprising a plurality of laminated magnetic film units laminated with insulating films in-between. Each laminated magnetic film unit in turn comprises a plurality of magnetic films with non-magnetic films in-between, with the magnetic films being magnetostatically connected to one another at film ends. By employing the laminated magnetic film unit for the magnetic core film, it becomes possible to markedly increase the magnetic permeability in a direction normal to the gap depth when anisotropy is applied in the gap depth direction. With the above magnetic head, a plurality of the magnetic film units are laminated with insulating films in-between for suppressing eddy current losses in the high frequency region. As a result, excellent electro-magnetic transducing characteristics may be obtained in the high frequency range.

Magnetic head

Magnetic head with improved core bonding

A method for manufacturing a magnetic transducer head in which a track width regulating grooves provided on both edges of a magnetic gap are filled by blowing a powder beam of nonmagnetic material having a very fine particle size to deposit the nonmagnetic material in the grooves. A pair of magnetic core members are bonded together to form a magnetic gap therebetween by providing a metal layer of a bonding surface of the core members and applying a pressure to the core members under an elevated temperature to cause a mutual diffusion of the metal to bond the core members together. Thus the magnetic transducer head can be made without using a high-temperature heat treatment.

Method for manufacturing a magnetic transducer head

A magnetic head is disclosed which is formed by magnetic core halves constituted of an oxide magnetic material and soft magnetic thin films, wherein the boundary surfaces between the thin films and the oxide magnetic material runs substantially parallel to the gap surface in the vicinity of the magnetic gap. The soft magnetic thin films are soft magnetic thin films of the Fe-Ga-Si system consisting essentially of Fe, Ga and Si.

Magnetic head with Ru containing soft magnetic alloy in gap

A magnetic transducer head in which the magnetic core elements of ferromagnetic oxides are sliced obliquely across the junction surface of the core elements, ferromagnetic metal thin films are formed on the resulting inclined surfaces by employing a physical vapor deposition, and the core elements are placed with the respective ferromagnetic metal thin films abutting to each other for defining a magnetic gap therebetween, wherein the improvement consists in that said inclined surfaces with the ferromagnetic metal thin films formed thereon are inclined at a preset angle with the magnetic gap forming surface, in that non-magnetic films having high-hardness are interposed between the ferromagnetic oxide and the ferromagnetic metal thin films, and in that said ferromagnetic metal thin films and the oxide glass fillers are provided on the tape abutment surface by the intermediary of the non-magnetic film having high-hardness. The provision of the non-magnetic film having high-hardness between the ferromagnetic oxide and the ferromagnetic metal thin film is effective to inhibit the reaction otherwise occurring between the oxide and the films, while positively preventing the formation of the boundary layer with inferior magnetic properties. Likewise, the provision of the non-magnetic film having high-hardness between the ferromagnetic metal thin film and the oxide glass is effective to prevent the erosion of the film by the molten glass, while also improving the molten glass fluidity. It should be noted that the non-magnetic films having high-hardness may be provided on the interface only between the core elements and the metal thin films or on the interface only between the metal thin films and the oxide glass.

Magnetic transducer head with inclined magnetic gap

A magnetic transducer head comprising a first magnetic core element and a second magnetic core element, each of the first and second core elements comprising a magnetic ferrite block and a magnetic metal thin film integrated with the magnetic ferrite block. These core elements having a first planar surface and a second planar surface. The magnetic metal thin film being provided on the second planar surface and having an edge thereof facing to the first planar surface, and the second planar surface being slantly provided with respect to said first planar surface. These core elements being bonded together to form an operating magnetic gap between the edge of the magnetic metal thin film on the first core element and the edge of the magnetic metal thin film on the second core element. The magnetic metal thin film on the first core element or the magnetic thin film on the second core element is formed in one common plane. The magnetic metal thin film may be formed of the ferromagnetic metals including Fe--Al--Si alloys, amorphous metal alloys or permalloy. And the magnetic metal thin film having substantially uniform columnar grain structure or uniform magnetic anisotropy, over entire area of the film.

Magnetic transducer head having an alloy thin film of high saturation

A magnetic thin film consisting essentially of Fe, Al and Si and further containing nitrogen has high magnetic permeability and high hardness without lowering the magnetic properties such as saturation magnetic flux density or coercive force. The magnetic thin film has an increased specific resistivity and a lowered eddy current loss in the high frequency region and is suitable for a core material of magnetic transducer heads used in a high frequency region. The magnetic thin film is prepared by, for example, physical vapor deposition or ion implantation.

Magnetic thin film

A magnetic thin film consisting essentially of Fe, Al and Si and further containing oxygen has high magnetic permeability and high hardness without lowering the magnetic properties such as saturation magnetic flux density or coercive force. The magnetic thin film has an increased specific resistivity and a lowered eddy current loss in the high frequency region and is suitable for a core material of magnetic transducer heads used in a high frequency region. The magnetic thin film is prepared by, for example, physical vapor deposition or ion implantation.

Growing community of inventors

Tokyo, Japan

Tatsuo Kumura