Zaidan Hojin Biseibutsu Kagaku Kenkyu Kai

Tdk Corporation

Meiji Seika Kaisha, Ltd.

Sony Corporation

Tosoh Corporation

Other

Bristol-myers Company

L&i Inc.

Unisia Jecs Corporation

Meiji Seika Kabushiki Kaisha

Nimura Genetic Solutions Co., Ltd.

Forest Research Institute Malaysia

Meiji Seiki Kaisha, Ltd.

Meiji Saika Kaisha, Ltd.

Susumu Mitsuhashi

Shinichi Kondo

Hamao Umezawa

Tomio Takeuchi

Takashi Suzuki

Masaki Takahashi

Yuya Ishima

Yusuke Nagai

Kouichi Kakuda

Daishiro Ikeda

Shinichi Sato

Kunihiko Kawasaki

Seiji Shibahara

Masa Hamada

Hidekazu Sato

Kenji Maeda

Kazuhiro Ebina

Sumio Umezawa

Masaji Sezaki

Haruo Yamamoto

Shuichi Gomi

Takahiro Sato

Takashi Endo

Takashi Tsuruoka

Seiichi Nakagawa

Hironobu Iinuma

Akio Fujii

Shunzo Fukatsu

Teruya Nakamura

Ken Nishihata

Yoshiro Okami

Satoru Nakabayashi

Shusaku Umemoto

Takashi Yoshida

Katsuyoshi Iwamatsu

Kosuke Ito

Makoto Yoshino

Ryuichi Wada

Hiroo Hoshino

Shigeharu Inoue

Yohei Tadaki

Toshiaki Kudo

Shigeharu Inouye

Takaaki Aoyagi

Masaaki Ishizuka

Hiroshi Naganawa

Kunio Atsumi

Kiyoaki Katano

Yoji Tozawa

Yasushi Murai

Tsuneo Okonogi

Shunji Aoki

Hiroko Ogino

Yasushi Matsuyama

Kenji Sakagami

Tsutomu Tsuchiya

Koji Tsukuma

Takashi Shomura

Kazuya Tobita

Masao Koyama

Noriaki Hamachi

Tomohisa Takita

Akihiko Oide

Mitsugu Hachisu

Atsushi Tamura

Eiichi Akita

Yoshiyuki Koyama

Yuichi Yamamoto

Hiroshi Yoshikawa

Yukio Takahashi

Hiroshi Hayashi

Takashi Watanabe

Shunichi Kajiya

Takashi Kudo

Yuto Shiga

Hideaki Takahashi

Kazuhito Shimoda

Yoshikazu Sato

Makoto Morita

Masayasu Kakinuma

Takashi Inagaki

Masahiro Endo

Hiroyuki Kiso

Takayuki Nakamura

Shigeo Seki

Yujiro Yamada

Hideya Chubachi

Hitoshi Kamoda

Keiichiro Nishizawa

Takeshi Shibayama

Kyohei Tonoyama

Keiichi Numata

Yoshihiro Okamoto

Hidenobu Umeda

Hamao Umezawa, Deceased

Ko Ishikawa

Yu Sakurai

Fumio Kai

A multilayer coil component includes: an element body formed by stacking a magnetic body layer containing a plurality of metal magnetic particles of a soft magnetic material; a first coil disposed in the element body and configured to include a plurality of first coil conductors; a second coil disposed in the element body and configured to include a plurality of second coil conductors; a first external electrode to which one end portion of each of the first coil and the second coil is connected; and a second external electrode to which the other end portion of each of the first coil and the second coil is connected.

Multilayer coil component

In a multilayer coil component, first and second conductor patterns respectively have parallel parts that overlap in a lamination direction and non-parallel parts that do not overlap. The parallel parts of the first and second conductor patterns of one set are interconnected by a first through hole. The non-parallel parts of the first and second conductor patterns of sets adjacent to each other in the lamination direction are interconnected by a second through hole.

A soft magnetic metal powder or the like from which a soft magnetic metal fired body can be provided has a high magnetic permeability μ and a specific resistance ρ and is contained in a coil-type electronic component having sufficiently high inductance L and Q value and unlikely to be plating-extended and short-circuited. A soft magnetic metal powder contains soft magnetic metal particles containing at least Fe and Ni. Said soft magnetic metal powder further contains P, Si, Cr and/or M. M is at least one selected from among B, Co, Mn, Ti, Zr, Hf, Nb, Ta, Mo, Mg, Ca, Sr, Ba, Zn, Al, and rare earth elements. The content of each element is within a predetermined range.

Soft magnetic alloy powder, soft magnetic sintered body, and coil-type electronic component

A multilayer coil component includes: an element body containing a plurality of metal magnetic particles; a coil disposed in the element body; and an external electrode disposed on a surface of the element body and electrically connected to the coil. At least a part of a void part between the metal magnetic particles in the element body is filled with a first resin, the external electrode has a resin electrode containing a second resin and a conductor powder dispersed in the second resin, and the second resin connected from the resin electrode extends into the element body.

A multilayer coil device includes an element formed by laminating a coil conductor and a magnetic element body. The magnetic element body includes soft magnetic particles and an epoxy resin. The soft magnetic particles include soft magnetic metal particles. The epoxy resin has an epoxy value of 150 or less. The epoxy resin is filled in gap spaces between the soft magnetic particles.

Multilayer coil device and method of manufacturing the same

In a multilayer coil component, a coil is configured by electrically connecting coil conductors respectively provided in magnetic body layers constituting an element body and metal magnetic particles have a normal particle having an ellipsoidal shape and flat particles having an ellipsoidal shape flatter in a thickness direction than the normal particle. A plurality of the normal particles and at least one of the flat particles disposed such that a surface (reference surface) including a major axis direction orthogonal to the thickness direction and a minor axis direction is along the forming surface of the coil conductor in the magnetic body layer are arranged in the lamination direction of the magnetic body layers between the coil conductors.

In a multilayer coil component, a part filled with a resin and a void part not filled with the resin exist between a plurality of metal magnetic particles in an element body, one main surface of the element body is a mounting surface with respect to an external electronic component, and the edge of an external electrode is positioned on the mounting surface. In the element body, a high void region where the porosity caused by the void part is higher than the porosity of the other part in the element body extends from the edge of the external electrode on the mounting surface toward an end surface of the element body.

A multilayer coil component includes an element body, first and second coils, and a pair of external electrodes. The element body includes a plurality of insulator layers laminated in a first direction. The element body has a pair of end surfaces opposing each other in a second direction orthogonal to the first direction. The first coil and the second coil are disposed in the element body and respectively have coil shafts along the second direction. The pair of external electrodes are disposed on the pair of end surfaces and electrically connected to both ends of the first coil and the second coil. The first coil includes a first conductor layer, a second conductor layer, and a first through hole conductor. The coil shaft of the first coil is disposed inside the second coil.

An information processing system includes a first device and a second device. The first device generates first encrypted data by applying a first encryption with respect to the original data stored in a shared storage area, and causing the first encrypted data to be stored in the shared storage area. The second device generates second encrypted data by applying a second encryption with respect to the first encrypted data stored in the shared storage area, and causes the second encrypted data to be stored in the shared storage area. The first device deletes the original data and the first encrypted data from the shared storage area.

Information processing system executing encryption processing and decryption processing and storage medium

A multilayer coil component includes an element body including a plurality of metal magnetic particles, and a plurality of coil conductors. The plurality of coil conductors is disposed in the element body. The plurality of coil conductors is separated from each other in a predetermined direction and electrically connected to each other. The plurality of coil conductors includes one pair of side surfaces opposing each other in the predetermined direction. Surface roughness of the one pair of side surfaces is less than 40% of an average particle size of the plurality of metal magnetic particles.

A multilayer coil component includes an element body containing a plurality of metal magnetic particles and a resin existing between the plurality of metal magnetic particles and a coil disposed in the element body and configured to include a plurality of electrically interconnected coil conductors. At least one of the plurality of coil conductors has a spiral shape and has conductor portions adjacent to each other when viewed from a direction along a coil axis of the coil. The conductor portion includes a straight conductor portion extending in a straight line and a connecting conductor portion connecting the straight conductor portion and constituting a corner portion of the coil conductor. The metal magnetic particles between the connecting conductor portions adjacent to each other are lower in density than the metal magnetic particles between the straight conductor portions adjacent to each other.

A method for producing a multilayer coil component includes forming, on a main face of a substrate, a first coil conductor extending along the main face having conductivity, forming a second coil conductor and a third coil conductor apart from each other in a direction in which the first coil conductor extends and each extending from the first coil conductor in a first direction orthogonal to the main face, and forming a fourth coil conductor electrically connected to an end of the second coil conductor opposite to the first coil conductor and extending along the main face. The forming the first coil conductor includes forming, on the main face, a first insulator layer provided with a first penetration portion having a shape corresponding to the first coil conductor and exposing a part of the main face, and forming, by plating, the first coil conductor in the first penetration portion.

Method for producing multilayer coil component

An electronic component according to an aspect of the present disclosure includes an element body and a terminal electrode. The element body includes an outer surface provided with a depression. The terminal electrode is disposed on the element body. The terminal electrode includes a first electrode portion and a second electrode portion. The first electrode portion is disposed in the depression. The second electrode portion protrudes from the depression. The second electrode portion is thicker than the first electrode portion.

Electronic component

Growing community of inventors

Tokyo, Japan

Shinichi Kondo