Dexerials Corporation

Hiroyuki Ryoson

Katsuhisa Orihara

Norio Saito

Masayoshi Kanno

Akihiro Fukuda

Manabu Suzuki

Tatsuo Kumura

Masahiro Kobo

Keisuke Aramaki

Yusuke Kubo

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

An antenna device incorporated in an electronic apparatus to communicate with an external apparatus via an electromagnetic field signal includes a first conductor provided inside a housing of the electronic apparatus and opposing the external apparatus, a loop antenna having an antenna coil conductively coupled to the external apparatus and coiling thereon, a sheet-like second conductor provided as being spaced with a predetermined space from the first conductor and partially overlapping or making contact with a surface of the loop antenna opposite to a surface opposing the external apparatus, and a sheet-like third conductor provided between the first conductor and the second conductor and having one end overlapping or making contact with the first conductor and other end partially overlapping or making contact with the second conductor.

Antenna device and electronic apparatus

An electronic device and an antenna device are provided that use a coil module which is thinned without losing the characteristics of the coil module and which can be mounted in a narrowed space. A coil module including a loop-shaped antenna coil wounded in a planar shape and a sheet-shaped magnetic sheet which is formed of a magnetic material and which overlaps with at least a part of the antenna coil is included. In the coil module, a part of the antenna coil is overlapped with an internal structure of a housing and the magnetic sheet is provided in a position that does not overlap with the internal structure on an antenna coil surface side that overlaps with the internal structure.

Electronic device and antenna device

Provided is an antenna device that achieves good communication characteristics when incorporated into an electronic apparatus. The antenna device incorporated into an electronic apparatus and configured to communicate with an external device via an electromagnetic field signal comprises: a metal plate serving as a first electric conductor, being provided inside a casing of the electronic apparatus and facing the external device; an antenna substrate provided inside the casing of the electronic apparatus, and having an antenna coil inductively coupled to the external device and wound around thereon; and metal foil serving as a second electric conductor in sheet form, being provided inside the casing of the electronic apparatus, overlapping or being in contact with the metal plate serving as the first electric conductor, and at least partially overlapping a surface of the antenna substrate, the surface being opposite to a surface facing the external device.

An electronic device incorporated with a coil module that achieves favorable communication characteristics is provided. In an electronic device incorporated with a coil module, the coil module includes a loop coil wounded in a planar shape and a sheet-shaped magnetic sheet which is formed of a magnetic material and which overlaps with a part of the loop coil, and the magnetic sheet is arranged on at least one side extending from a center of the loop coil.

Electronic device and coil module

The loss is reduced even when loop coils of a multi-coil module are overlaid with each other. The multi-coil module includes a first coil module, having a first magnetic sheet and a first loop coil provided on the first magnetic sheet and wound in a planar shape, and a second coil module, having a second magnetic sheet and a second loop coil provided on the second magnetic sheet and wound in a planar shape. The first coil module and the second coil module are stacked on each other, and at least an innermost coil pattern of the first loop coil and the second loop coil are overlaid with each other. The line width of the innermost coil pattern t of the first loop coil overlaid with the second loop coil is 1 mm or less.

Multi-coil module and electronic device

Provided is a wireless communication system which has excellent communication characteristics even between antenna modules having antenna coils between which there is a large difference in outside diameter. The wireless communication system includes: a first antenna module including a first antenna coil; and a second antenna module including a second antenna coil and capable of communication by receiving a magnetic field transmitted from the first antenna module, in which the first antenna coil and the second antenna coil have mutually different outside diameters, and, out of the first antenna coil and the second antenna coil, the antenna coil having a larger outside diameter is formed in such a way that the area of an opening portion inside the innermost perimeter of an antenna pattern is not more than 120% of the outside diameter area of the other antenna coil having a smaller outside diameter.

Growing community of inventors

Tochigi, Japan

Hiroyuki Ryoson