Murata Manufacturing Co., Ltd.

Toko, Inc.

Yutaka Noguchi

Makoto Yamamoto

Takeshi Kobayashi

Kenichi Araki

Keiichi Ishida

Satoru Maeda

A coil component including a substantially rectangular parallelepiped first magnetic portion that includes a coil conductor and a second magnetic portion disposed on at least the upper surface of the first magnetic portion. The first magnetic portion contains first magnetic particles including a metal magnetic material, the second magnetic portion contains second magnetic particles and a resin, and the resin content in the second magnetic portion is higher than the resin content in the first magnetic portion.

Coil component

A laminated electronic component having a coil formed in the laminated body of pluralities of laminated magnetic material layers and conductor patterns by electrically connecting the conductor patterns adjacent to each other via the magnetic material layers. The magnetic material layers contain a metal magnetic material. The coil has a first end portion close to a bottom surface of the laminated body and a second end portion distant from the bottom surface of the laminated body. The first end portion is electrically connected to a first external terminal disposed on the bottom surface of the laminated body. The second end portion is electrically connected to a second external terminal disposed on the bottom surface of the laminated body via an electrode disposed on a side surface of the laminated body. The electrode is covered with an insulator film.

Laminated electronic component

A laminated electronic component having a coil formed in a laminated body of pluralities of laminated magnetic material layers and conductor patterns by electrically connecting the conductor patterns adjacent to each other via the magnetic material layers. The magnetic material layers contain a metal magnetic material. The coil has a first end portion close to a bottom surface of the laminated body and a second end portion distant from the bottom surface of the laminated body. The first end portion is electrically connected to a first external terminal disposed on the bottom surface of the laminated body. The second end portion is electrically connected to a second external terminal disposed on the bottom surface of the laminated body via a conductor extending in a lamination direction of the laminated body. An insulator part is disposed between the conductor and the coil.

A method of manufacturing a laminated electronic component having a circuit element formed in an element body. The method includes forming a collective laminated body including a plurality of element bodies having circuit elements formed therein by laminating pluralities of insulator layers and conductor patterns; forming a plurality of external terminals on one of surfaces of the collective laminated body orthogonal to a lamination direction; forming a disappearing layer covering the external terminals and caused to disappear by heat treatment; cutting and dividing the collective laminated body having the disappearing layer formed thereon along the lamination direction into each of element bodies; applying an insulator precursor to a surface of the element body; and forming a laminated electronic component by applying a heat treatment to the element body to which the insulator precursor is applied. In the method, the insulator layers can be replaced by magnetic material layers.

Method of manufacturing laminated electronic component

A laminated electronic component is configured such that insulator layers and conductor patterns are laminated and a coil is formed in a laminate of the insulator layers and the conductor patterns by connecting the conductor patterns among the insulator layers, where the coil includes conductor pattern pairs each composed of two conductor patterns arranged so as to sandwich each insulator layer, and includes a first connecting portion connecting both end portions of the two conductor patterns so as to connect the two connecting patterns in parallel and a second connecting portion connecting a plurality of the conductor pattern pairs in series, where the first connecting portion and the second connecting portion are arranged so as to be displaced from each other in a direction of a line length of a coil pattern.

Laminated electric inductor

A laminated-type electronic component including: plural magnetic material layers; plural conductive patterns; a laminated layer body formed by laminating the plural magnetic material layers and the plural conductive patterns; a coil formed in the laminated layer body by connecting the conductive patterns between the magnetic material layers; and at least one magnetic gap formed in the laminated layer body, wherein the magnetic gaps are formed of a compound of Ni and Cu.

Growing community of inventors

Nagaokakyo, Japan

Yutaka Noguchi