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公开(公告)号：US10158293B2
公开(公告)日：2018-12-18
申请号：US15487456
申请日：2017-04-14
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takashi Noma , Keiichi Ichikawa
Abstract: A power supply module includes a substrate, a switching control IC and a coil. The coil includes a plurality of metal posts, first ends of which are mounted on a first surface of the substrate, wiring conductors that are in conductive contact with the first ends of the metal posts, and post connection conductors that are in conductive contact with second ends of the metal posts. The power supply module further includes a magnetic core that strengthens magnetic flux generated by the coil, and a sealing resin that seals the metal posts and the magnetic core.
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公开(公告)号：US10020582B2
公开(公告)日：2018-07-10
申请号：US14918747
申请日：2015-10-21
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Nobuhito Tsubaki , Takashi Noma , Noboru Kato
Abstract: To ensure a sufficient communication distance and to concurrently suppress a conductor loss, a coil antenna includes a magnetic core including a first peripheral surface including at least a first principal surface, a first coil conductor located on the first principal surface and wound around a predetermined winding axis, a first base material layer stacked on the first principal surface, including at least a first surface parallel or substantially parallel to the first principal surface, and made of a material having a lower magnetic permeability than the magnetic core, and a second coil conductor located on at least the first surface. Opposite ends of the second coil conductor are coupled to the first coil conductor on the first principal surface, and a direction in which a current flows through the first coil conductor on the first principal surface is substantially the same as a direction in which a current flows through the second coil conductor on the first surface.
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公开(公告)号：US09748032B2
公开(公告)日：2017-08-29
申请号：US14685797
申请日：2015-04-14
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Yoshihiro Kubota , Takashi Noma
CPC classification number: H01F27/2804 , H01F5/00 , H01F2027/2809 , H02M3/158 , H02M2001/008 , Y10T307/406
Abstract: An inductor array chip includes a magnetic laminated body and a plurality of inductors. The magnetic laminated body includes a plurality of stacked magnetic layers. The plurality of inductors are arranged inside the magnetic laminated body. The inductance of a first inductor differs from the inductance of a second inductor. The inductors include a plurality of coil-shaped conductors and via-hole conductors. The plurality of coil-shaped conductors are arranged between the magnetic layers. The via-hole conductors electrically connect the plurality of coil-shaped conductors. The inductors include a plurality of inductors in which the section sizes of the coil-shaped conductors differ from one another.
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公开(公告)号：US10680415B2
公开(公告)日：2020-06-09
申请号：US16055192
申请日：2018-08-06
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiromitsu Hongo , Takahiro Sumi , Takeshi Miki , Jun Adachi , Takayuki Tsukizawa , Takashi Noma
Abstract: An ESD protection device includes first and second discharge electrodes and a discharge auxiliary electrode that is electrically connected to the first and second discharge electrodes. The first and second discharge electrodes are located on or in an insulating substrate to at least partially face each other. The discharge auxiliary electrode includes first metal particles, second metal particles, and a binding agent. The first metal particles have a core-shell structure including a core section mainly including a first metal and a shell section which mainly includes an oxide of a second metal and which includes at least one portion with a cavity. The second metal particles have a core-shell structure including a core section mainly including the first metal and a shell section which mainly includes the oxide of the second metal and which has no cavity.
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公开(公告)号：US09373441B2
公开(公告)日：2016-06-21
申请号：US14254252
申请日：2014-04-16
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takashi Noma , Tetsuya Ikeda
CPC classification number: H01F27/34 , H01F17/0013 , H01F17/0033 , H01F27/24 , H01F27/2804 , H01F27/29 , H01F27/40 , H01F2017/0066 , H01F2027/2809 , H03H2001/0057 , H03H2001/0085
Abstract: A composite electronic component with a built-in coil is provided which can be produced inexpensively, which can effectively increase insulating reliability, and which has the antistatic function. Coil wirings are disposed inside a sintered body that is formed by stacking a plurality of ferrite layers, which are fired as an integral unit. Voltage nonlinear members are incorporated in the sintered body at a different height position from those of the coil wirings. First inner electrodes and second inner electrodes are disposed in opposing relation with the voltage nonlinear members interposed therebetween. A magnetic circuit forming portion is constituted by a part of the ferrite layers and the coil wirings in a portion in which the coil wirings are arranged, and an antistatic portion is constituted in a portion in which the remaining ferrite layers, the voltage nonlinear members, and the first and second inner electrodes are arranged.
Abstract translation: 提供具有内置线圈的复合电子部件，其可以廉价地制造，这可以有效地增加绝缘可靠性，并且具有抗静电功能。 线圈布置在通过堆叠作为一体单元烧制的多个铁氧体层形成的烧结体内部。 电压非线性元件与不同于线圈布线的高度位置结合在烧结体中。 第一内部电极和第二内部电极与插入其间的电压非线性部件相对设置。 磁路形成部分由铁氧体层的一部分和布置有线圈布线的部分中的线圈布线构成，并且在其中剩余的铁氧体层，电压非线性构件等的部分中构成防静电部分， 并且布置第一和第二内部电极。
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Patent Agency Ranking
公开(公告)号：US11032904B2
公开(公告)日：2021-06-08
申请号：US16438519
申请日：2019-06-12
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hirokazu Yazaki , Keito Yonemori , Takanori Tsuchiya , Koji Kamada , Takashi Noma
IPC: H05K1/00 , H05K1/18 , H05K7/00 , H05K1/11 , H01R12/62 , H05K1/02 , H05K1/14 , H05K3/46 , H05K3/36
Abstract: An interposer substrate includes a body, first to third external connection conductors, and a wiring conductor. The body includes first to third principal surfaces. A distance between the first and second principal surfaces is different from a distance between the first and third principal surfaces. The first external connection conductor is provided on the first principal surface and is connected to an external circuit board. The second external connection conductor is provided on the second principal surface and is connected to a first flat cable. The third external connection conductor is provided on the third principal surface and is connected to a second flat cable. The wiring conductor is provided in the body, and connects the first external connection conductor and second and third external connection conductors.
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公开(公告)号：US09320184B2
公开(公告)日：2016-04-19
申请号：US14553031
申请日：2014-11-25
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kosuke Yamada , Takashi Noma , Jun Adachi
CPC classification number: H05K9/0079 , H01T4/12 , H01T21/00
Abstract: An ESD protection device includes an alumina multilayer substrate, a hollow portion, a discharge electrode pair, discharge-assisting electrodes, and a vitreous substance. The hollow portion is disposed inside of the alumina multilayer substrate. The electrodes of the discharge electrode pair are disposed opposite to each other at an interface between the hollow portion and the alumina multilayer substrate. The discharge-assisting electrodes are disposed dispersedly between the opposite electrodes of the discharge electrode pair. The vitreous substance covers the discharge-assisting electrodes in the inside of the hollow portion. A trial discharge is executed so as to induce creepage discharge between the electrodes of the discharge electrode pair in advance.
Abstract translation: ESD保护装置包括氧化铝多层基板，中空部，放电电极对，放电辅助电极和玻璃状物质。 中空部设置在氧化铝多层基板的内部。 放电电极对的电极在中空部分和氧化铝多层基板之间的界面处彼此相对设置。 放电辅助电极分散配置在放电电极对的相对电极之间。 玻璃质物质覆盖中空部分的内部的放电辅助电极。 进行试验放电，以预先在放电电极对的电极之间引起爬电放电。
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公开(公告)号：US09245681B2
公开(公告)日：2016-01-26
申请号：US14314130
申请日：2014-06-25
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Noboru Kato , Takashi Noma , Hisashi Akiyama
CPC classification number: H01F27/343 , H01F17/0013 , H01F17/0033 , H01F27/2804 , H01F27/292 , H01F2017/0093 , H01F2027/2809 , H01F2027/348 , H02H9/04 , H03H7/0107 , H03H7/427 , H03H2001/0085
Abstract: In a common-mode choke coil, first annular conductors are helically defined from the lower layer to the upper layer, and first annular conductors are helically defined from the upper layer to the lower layer. Further, second annular conductors are helically defined from the lower layer to the upper layer, and second annular conductors are helically defined from the upper layer to the lower layer. The first annular conductors and the second annular conductors are disposed alternately in a lamination direction. The first annular conductors and the second annular conductors are disposed such that substantial portions of the annular conductors adjacent to each other in the layer direction do not overlap in a planar view. This structure achieves a compact common-mode choke coil with which the loss of normal-mode signals is small, and which is highly capable of removing common-mode noise.
Abstract translation: 在共模扼流线圈中，第一环形导体从下层到上层螺旋地限定，并且第一环形导体从上层到下层螺旋地限定。 此外，第二环形导体从下层到上层螺旋地限定，并且第二环形导体从上层到下层螺旋地限定。 第一环形导体和第二环形导体沿层叠方向交替设置。 第一环形导体和第二环形导体被布置成使得在层方向上彼此相邻的环形导体的实质部分在平面图中不重叠。 这种结构实现了一种紧凑的共模扼流线圈，正常模式信号的损耗小，能够去除共模噪声。
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公开(公告)号：US09214728B2
公开(公告)日：2015-12-15
申请号：US14221356
申请日：2014-03-21
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Nobuhito Tsubaki , Takashi Noma , Noboru Kato
Abstract: To ensure a sufficient communication distance and to concurrently suppress a conductor loss, a coil antenna includes a magnetic core including a first peripheral surface including at least a first principal surface, a first coil conductor located on the first principal surface and wound around a predetermined winding axis, a first base material layer stacked on the first principal surface, including at least a first surface parallel or substantially parallel to the first principal surface, and made of a material having a lower magnetic permeability than the magnetic core, and a second coil conductor located on at least the first surface. Opposite ends of the second coil conductor are coupled to the first coil conductor on the first principal surface, and a direction in which a current flows through the first coil conductor on the first principal surface is substantially the same as a direction in which a current flows through the second coil conductor on the first surface.
Abstract translation: 为了确保足够的通信距离并且同时抑制导体损耗，线圈天线包括磁芯，该磁芯包括至少包括第一主表面的第一周边表面，位于第一主表面上的第一线圈导体并围绕预定绕组 所述第一基材层层叠在所述第一主表面上，所述第一基材层至少包括与所述第一主表面平行或基本平行的第一表面，并且由具有比所述磁芯低的磁导率的材料制成;以及第二线圈导体 至少位于第一表面。 第二线圈导体的相对端部耦合到第一主表面上的第一线圈导体，并且电流流过第一主表面上的第一线圈导体的方向与电流流动的方向基本相同 通过第一表面上的第二线圈导体。
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公开(公告)号：US09666356B2
公开(公告)日：2017-05-30
申请号：US14970614
申请日：2015-12-16
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Noboru Kato , Takashi Noma , Hisashi Akiyama
IPC: H01F27/28 , H01F5/00 , H01F27/34 , H03H7/42 , H01F17/00 , H02H9/04 , H01F27/29 , H03H7/01 , H03H1/00
CPC classification number: H01F27/343 , H01F17/0013 , H01F17/0033 , H01F27/2804 , H01F27/292 , H01F2017/0093 , H01F2027/2809 , H01F2027/348 , H02H9/04 , H03H7/0107 , H03H7/427 , H03H2001/0085
Abstract: In a common-mode choke coil, first annular conductors are helically defined from the lower layer to the upper layer, and first annular conductors are helically defined from the upper layer to the lower layer. Further, second annular conductors are helically defined from the lower layer to the upper layer, and second annular conductors are helically defined from the upper layer to the lower layer. The first annular conductors and the second annular conductors are disposed alternately in a lamination direction. The first annular conductors and the second annular conductors are disposed such that substantial portions of the annular conductors adjacent to each other in the layer direction do not overlap in a planar view. This structure achieves a compact common-mode choke coil with which the loss of normal-mode signals is small, and which is highly capable of removing common-mode noise.
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