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公开(公告)号：US20240038425A1
公开(公告)日：2024-02-01
申请号：US18352869
申请日：2023-07-14
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kouhei MATSUURA
CPC classification number: H01F1/344 , H01F27/2804 , H01F27/323
Abstract: A coil component includes a bare body including, in a lamination direction, a first glass layer, a first ferrite layer adjacent to one principal surface side of the first glass layer, and a second ferrite layer adjacent to the other principal surface side of the first glass layer, a coil inside the first glass layer, and outer electrodes on surfaces of the bare body and electrically connected to the coil. Assuming that a region between first and second positions is a first inner region, a region between third and fourth positions is a first outer region, and a region between the second and fourth positions is a first intermediate region, an area rate of pores in the first inner region is greater than in the first intermediate region, and an average crystal particle size of ferrite in the first inner region is smaller than in the first intermediate region.
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公开(公告)号：US20210241969A1
公开(公告)日：2021-08-05
申请号：US17165621
申请日：2021-02-02
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kouhei MATSUURA , Atsuo HIRUKAWA , Hiroshi UEKI
Abstract: A common-mode choke coil includes a multilayer body, a first coil, a second coil, a first terminal electrode, a second terminal electrode, a third terminal electrode, and a fourth terminal electrode. The multilayer body includes plural non-conductor layers. The first and second coils are incorporated in the multilayer body. The first and second terminal electrodes are connected to the first coil. The third and fourth terminal electrodes are connected to the second coil. The first coil has a path length L1, the second coil has a path length L2, and the sum of the path length L1 and the path length L2 is less than or equal to 3.5 mm.
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公开(公告)号：US20240112841A1
公开(公告)日：2024-04-04
申请号：US18365713
申请日：2023-08-04
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kouta ONO , Kouhei MATSUURA , Tomoyuki SATO
CPC classification number: H01F17/0013 , H01F27/292 , H01F2017/0093
Abstract: A coil component includes an element body including a multilayer body in which a first ferrite layer, a first glass layer, and a second ferrite layer are laminated in that order; a coil embedded in the first glass layer; and an outer electrode provided on an outer surface of the element body and electrically connected to the coil. The first glass layer includes regions in which Cu and Mg coexist.
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公开(公告)号：US20210241959A1
公开(公告)日：2021-08-05
申请号：US17165712
申请日：2021-02-02
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kouhei MATSUURA , Atsuo HIRUKAWA , Hiroshi UEKI
Abstract: A common-mode choke coil includes a multilayer body, and first and second coils incorporated in the multilayer body. The multilayer body is a cuboid shape including plural stacked non-conductor layers. The first coil includes a first coil conductor. The second coil includes a second coil conductor. With the common-mode choke coil, in a frequency region greater than or equal to 0.1 GHz and less than or equal to 100 GHz (i.e., from 0.1 GHz to 100 GHz), the Sdd21 transmission characteristic is less than or equal to −3 dB at or above 30 GHz, and in a frequency region greater than or equal to 10 GHz and less than or equal to 60 GHz (i.e., from 10 GHz to 60 GHz), the Scc21 transmission characteristic is minimum at or above 20 GHz, and the Scc21 transmission characteristic has a minimum value of less than or equal to −20 dB.
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公开(公告)号：US20210241958A1
公开(公告)日：2021-08-05
申请号：US17165699
申请日：2021-02-02
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kouhei MATSUURA , Atsuo HIRUKAWA , Hiroshi UEKI
Abstract: A common-mode choke coil includes a multilayer body, a first coil, and a second coil. The multilayer body is a cuboid in shape that includes plural stacked non-conductor layers. The first and second coils are incorporated in the multilayer body. The first coil includes a first coil conductor, and the second coil includes a second coil conductor. The first coil conductor is positioned with gaps SG1 to SG4 interposed between the first coil conductor and the outer periphery surface of the multilayer body. The second coil conductor is positioned with gaps SG5 to SG8 interposed between the second coil conductor and the outer periphery surface of the multilayer body. Of the four absolute values of the differences between the gaps SG1 to SG4 and the corresponding gaps SG5 to SG8, at least two absolute values are greater than or equal to 0.02 mm.
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Patent Agency Ranking
公开(公告)号：US20210241957A1
公开(公告)日：2021-08-05
申请号：US17165647
申请日：2021-02-02
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kouhei MATSUURA , Atsuo HIRUKAWA , Hiroshi UEKI
Abstract: A common-mode choke coil includes a multilayer body, a first coil, a second coil, a first terminal electrode, a second terminal electrode, a third terminal electrode, and a fourth terminal electrode. The multilayer body includes plural non-conductor layers. The first and second coils are incorporated in the multilayer body. The first and second terminal electrodes are connected to the first coil. The third and fourth terminal electrodes are connected to the second coil. The first coil includes a first coil conductor. The second coil includes a second coil conductor disposed along an interface between non-conductor layers different from an interface between non-conductor layers along which the first coil conductor is disposed. The first and second coil conductors each have a number of turns of less than 2.
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公开(公告)号：US20210166854A1
公开(公告)日：2021-06-03
申请号：US17084369
申请日：2020-10-29
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kouhei MATSUURA , Morihiro HAMANO
Abstract: A coil component includes an element body including a first glass layer, a first ferrite layer formed on a first main surface of the first glass layer, and a second ferrite layer formed on a second main surface of the first glass layer; a coil buried in the first glass layer; and an outer electrode disposed on a side surface of the element body so as to span the first ferrite layer, the first glass layer, and the second ferrite layer. On the side surface of the element body, the width of the outer electrode in the ferrite layer regions is larger than the width of the outer electrode in the glass layer region in plan view in the direction perpendicular to the side surface.
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公开(公告)号：US20200152365A1
公开(公告)日：2020-05-14
申请号：US16670916
申请日：2019-10-31
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kouhei MATSUURA , Morihiro HAMANO , Keiichi TSUDUKI
Abstract: An electronic component that has fewer cracks during production is provided. The electronic component includes an outer electrode on a multilayer body, which includes an inner glass layer, a magnetic material layer on top and bottom surfaces of the inner glass layer, and an outer glass layer on top and bottom surfaces of the magnetic material layer. The insulating layers of the inner glass layer and the outer glass layers contain a dielectric glass material that contains a glass material containing at least K, B, and Si, quartz, and alumina. The glass material content of each insulating layer of the inner glass layer ranges from approximately 60%-65% by weight, the quartz content of each insulating layer of the inner glass layer ranges from approximately 34%-37% by weight, and the alumina content of each insulating layer of the inner glass layer ranges from approximately 0.5%-4% by weight.
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公开(公告)号：US20180350500A1
公开(公告)日：2018-12-06
申请号：US15991913
申请日：2018-05-29
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kouhei MATSUURA , Morihiro HAMANO , Keiichi TSUDUKI
Abstract: A coil component including a multilayer body, at least one coil provided inside the multilayer body, and outer electrodes disposed on at least one surface of the multilayer body. The multilayer body includes a first magnetic layer, an insulating layer laminated on the first magnetic layer, and a second magnetic layer laminated on the insulating layer. The coil has, at both ends thereof, lead-out portions, each of which extends up to the surface of the multilayer body and is connected to a respective one of the outer electrodes. The outer electrodes are each present over surfaces of the first magnetic layer, the insulating layer, and the second magnetic layer, and a width of a portion of at least one of the outer electrodes contacting the insulating layer is larger than widths of each of portions of that outer electrode contacting the first and second magnetic layers.
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公开(公告)号：US20180350499A1
公开(公告)日：2018-12-06
申请号：US15991857
申请日：2018-05-29
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kouhei MATSUURA , Morihiro HAMANO , Keiichi TSUDUKI , Naoyuki MURAKAMI
Abstract: An electronic component includes a multilayer body obtained by laminating a plurality of insulator layers the shape of which is substantially rectangular in plan view, a coil conductor in a substantially spiral shape provided on an insulator layer, and a land electrode located outside the coil conductor. The land electrode faces two sides intersecting at a vertex of the substantially rectangular shape when viewed along a direction of laminating the insulator layers, and is electrically connected to an end portion of the coil conductor, in which a shortest distance from one side of the two sides to the land electrode is equal to or longer than a shortest distance from the coil conductor to the one side.
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