公开(公告)号：US20150014899A1

公开(公告)日：2015-01-15

申请号：US14503787

申请日：2014-10-01

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Kunihiko HAMADA ,  Eiichi MAEDA ,  Kenji KAWABATA

IPC: H01F41/04

CPC classification number: H01F41/04 ,  H01F17/0013 ,  H01F17/0033 ,  H01F41/005 ,  H01F41/043 ,  H01F41/045 ,  H01F41/046

Abstract: A method includes: a laminate block preparing step of preparing a laminate block as an assembly of a number of laminates, by alternately laminating magnetic layers containing, as their main constituent, a magnetic metal material containing a glass material and conductor layers containing a conductive material so that the conductor layers are electrically connected to each other to form a coil pattern; a dividing step of dividing the laminate block by cutting the laminate block for each of the laminates; a magnetic material applying step of applying a magnetic material containing the magnetic metal material to side surfaces of the laminates; and a firing step of firing the laminates with the magnetic material applied thereto, thereby preparing a component body. This achieves a method for manufacturing a laminated coil component preferred for a power inductor with improved reliability, without impairing direct-current superimposition characteristics.

Abstract translation: 一种方法包括：层压块制备步骤，通过交替层叠含有作为其主要成分的含有玻璃材料的磁性金属材料和含有导电材料的导体层的磁性层，制备层压块作为多个层压体的组合 使得导体层彼此电连接以形成线圈图案; 分割步骤，通过切割每个层压体的层压块来分割层压块; 磁性材料施加步骤，将含有所述磁性金属材料的磁性材料施加到所述层叠体的侧表面; 以及烧结步骤，用施加到其上的磁性材料烧制层压体，从而制备组分体。 这实现了一种用于制造优选用于具有改进的可靠性的功率电感器的层叠线圈元件的方法，而不损害直流叠加特性。

公开(公告)号：US20240068881A1

公开(公告)日：2024-02-29

申请号：US18504562

申请日：2023-11-08

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Eiichi MAEDA ,  Masashi HATTORI ,  Mitsuru ODAHARA ,  Toru TAKAHASHI ,  Kojiro KOMAGAKI ,  Takahiro TAGUCHI

IPC: G01K7/04

CPC classification number: G01K7/04

Abstract: A thermoelectric conversion device that includes an element body including a plurality of stacked; and a meandering wire inside the element body and that has a stacked structure. The meandering wire includes a thermoelectric material that has an anomalous Nernst effect, and a thermal conductivity of the plurality of stacked substrates is lower than that of the thermoelectric material. A thermoelectric conversion device that includes a winding core; and a winding wire wound around the winding core. The winding wire consists only of a thermoelectric material that has an anomalous Nernst effect. A thermoelectric conversion device that includes a plurality of substrates and meandering wires on main surfaces of the respective substrates. The meandering wires include a thermoelectric material that has an anomalous Nernst effect, and the substrates adjacent to each other are arranged at an angle that is larger than 0 degrees and smaller than 180 degrees.

公开(公告)号：US20170133143A1

公开(公告)日：2017-05-11

申请号：US15333499

申请日：2016-10-25

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Eiichi MAEDA

IPC: H01F27/22 ,  H01F41/10 ,  H01F1/03 ,  H01F41/02 ,  H01F27/29 ,  H01F27/255

CPC classification number: H01F27/22 ,  H01F1/0306 ,  H01F17/04 ,  H01F27/255 ,  H01F27/292 ,  H01F41/0246 ,  H01F41/10 ,  H01F2017/048

Abstract: A coil component includes a coil portion, a core portion in which the coil portion is buried, and first and second outer electrodes connected respectively to one end and the other end of the coil portion at one or different end surfaces of the core portion. The core portion includes a metal magnetic substance—resin composite and a heat dissipative resin composite having a higher thermal conductivity than the metal magnetic substance—resin composite. The heat dissipative resin composite is arranged around an outer periphery of the coil portion to connect the outer periphery and the end surface of the core portion in at least parts thereof. The metal magnetic substance—resin composite is arranged in a core region and upper and lower regions with respect to the coil portion, and in a connecting region in at least one corner of the core portion.

公开(公告)号：US20150294780A1

公开(公告)日：2015-10-15

申请号：US14670938

申请日：2015-03-27

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Eiichi MAEDA

IPC: H01F27/28 ,  H01F41/04 ,  H01F1/01 ,  H01F1/032

CPC classification number: H01F27/2804 ,  H01F1/01 ,  H01F1/032 ,  H01F17/0013 ,  H01F17/04 ,  H01F27/292 ,  H01F41/043 ,  H01F41/046 ,  H01F2027/2809

Abstract: A laminated coil component includes a magnetic material part containing a metal magnetic material and a first glass component, and a nonmagnetic material part containing a ceramic material and a second glass component, and a coil conductor is formed so that at least the main surface of a coil pattern is in contact with the nonmagnetic material part. The magnetic material part is formed with the volume content of the first glass component based on the total amount of the metal magnetic material and the first glass component is 46 to 60 vol %. The nonmagnetic material part is formed with the volume content of the second glass component based on the total amount of the ceramic material and the second glass component is 69 to 79 vol %. A laminated coil component having good high-frequency characteristics and magnetic characteristics is obtained and a method for producing the laminated coil component.

Abstract translation: 层叠线圈部件包括含有金属磁性材料和第一玻璃组分的磁性材料部分和包含陶瓷材料和第二玻璃组分的非磁性材料部分，并且形成线圈导体，使得至少一个 线圈图案与非磁性材料部分接触。 基于金属磁性材料的总量，形成第一玻璃成分的体积含量，第一玻璃成分为46〜60体积％。 非磁性材料部分基于陶瓷材料的总量形成第二玻璃成分的体积含量，第二玻璃成分为69〜79体积％。 获得具有良好的高频特性和磁特性的层叠线圈部件及其制造方法。

公开(公告)号：US20150099115A1

公开(公告)日：2015-04-09

申请号：US14572645

申请日：2014-12-16

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Eiichi MAEDA ,  Toru TAKAHASHI

IPC: H01F1/01 ,  H01F27/255

Abstract: A magnetic material composition includes: magnetic alloy particles such as Fe—Si—Cr or Fe—Si—Al based particles, with a passivation film formed on the surfaces of the particles; and a glass constituent that contains Si, B, and an alkali metal such as K, Na, and Li, and has a softening point of 650 to 800° C. The content of the glass constituent is 12 to 32 wt % with respect to the total of the magnetic alloy particles and the glass constituent. A glass phase formed from the glass constituent is formed between the magnetic alloy particles. A component body with a coil conductor buried therein is formed from the magnetic material composition. Thus, ingress of moisture and plating solutions between the magnetic alloy particles can be suppressed so that favorable insulation performance can be ensured without impairing any magnetic property.

Abstract translation: 磁性材料组合物包括：形成在颗粒表面上的钝化膜的诸如Fe-Si-Cr或Fe-Si-Al基颗粒的磁性合金颗粒; 以及含有Si，B以及碱金属如K，Na和Li的玻璃成分，软化点为650〜800℃。玻璃成分的含量相对于 磁合金颗粒和玻璃成分的总和。 在该磁性合金粒子之间形成由玻璃成分形成的玻璃相。 由磁性材料组合物形成埋设有线圈导体的部件体。 因此，可以抑制磁性合金颗粒之间的水分和电镀液的侵入，从而可以确保良好的绝缘性能而不损害任何磁性。