Patents Assigned to TDK Corporation
  • Publication number: 20210354426
    Abstract: A noise suppression sheet comprises a pair of metal magnetic layers and a non-magnetic metal layer interposed between the pair of metal magnetic layers, and can achieve high magnetic shield characteristics on both surfaces.
    Type: Application
    Filed: May 18, 2020
    Publication date: November 18, 2021
    Applicant: TDK CORPORATION
    Inventors: Takashi YAMADA, Atsushi SATO, Makoto ORIKASA
  • Publication number: 20210358682
    Abstract: An electronic component according to the present invention includes: an element body containing metal particles and a resin; and a resin electrode layer formed on an electrode facing portion which is a part of an outer surface of the element body. The resin electrode layer contains a resin component and a conductor powder. In addition, the electrode facing portion includes an exposed portion formed by removing the resin on an outermost surface of the element body to expose a part of an outer periphery of the metal particles located on the outermost surface. Then, the resin electrode layer and the exposed portion of the electrode facing portion are joined to each other.
    Type: Application
    Filed: May 14, 2021
    Publication date: November 18, 2021
    Applicant: TDK CORPORATION
    Inventors: Kyosuke Inui, Toru Tonogai, Yuichi Oyanagi
  • Publication number: 20210358678
    Abstract: A coil device includes a first conductor, a second conductor, and a core. The second conductor is disposed inside the first conductor and at least partly extending along the first conductor. The core internally arranges the first conductor and the second conductor. An insulating layer is formed at least between the first conductor and the second conductor.
    Type: Application
    Filed: May 12, 2021
    Publication date: November 18, 2021
    Applicant: TDK CORPORATION
    Inventors: Chen WANG, Satoshi SUGIMOTO
  • Publication number: 20210360839
    Abstract: A noise suppression sheet comprises at least one composite layer, the composite layer including: an insulating resin layer; a non-magnetic metal layer formed on the insulating resin layer; and a metal magnetic layer formed on the non-magnetic metal layer, and the composite layer has a through hole. When the noise suppression sheet comprises a plurality of composite layers, the through holes are misaligned in adjacent composite layers in the laminating direction.
    Type: Application
    Filed: May 18, 2020
    Publication date: November 18, 2021
    Applicant: TDK CORPORATION
    Inventors: Takashi YAMADA, Atsushi SATO, Makoto ORIKASA, Hideharu MORO
  • Publication number: 20210360840
    Abstract: A noise suppression sheet comprises a non-magnetic metal layer, a plurality of metal magnetic layers, and a plurality of insulating layers, and the metal magnetic layer and the insulating layer are alternately laminated on the non-magnetic metal layer. The noise suppression sheet can absorb and suppress noise generated from a circuit or the like in an electronic component by being mounted on the electronic component or the like. In the noise suppression sheet, noise is absorbed by each of the metal magnetic layers. Noise that is transmitted without being absorbed by the metal magnetic layer can be reflected by the non-magnetic metal layer and can be absorbed again by the metal magnetic layer, and hence the noise suppression sheet can suppress noise effectively.
    Type: Application
    Filed: May 18, 2020
    Publication date: November 18, 2021
    Applicant: TDK CORPORATION
    Inventors: Takashi YAMADA, Atsushi SATO, Makoto ORIKASA, Hideharu MORO
  • Publication number: 20210358690
    Abstract: An electronic component includes an element body, an external electrode, and a metal terminal. In the metal terminal, a base includes a first surface and a second surface opposing each other, and a pair of third surfaces coupling the first surface and the second surface. A first metal layer is disposed on the first surface and connected to solder with which the external electrode and the metal terminal are connected together. A second metal layer is disposed on the second surface. A coating layer is disposed on each of the third surfaces. The first metal layer and the second metal layer each include an outermost layer containing Sn. Each of the coating layer includes an outermost layer lower in solder wettability than the respective outermost layers of the first metal layer and the second metal layer.
    Type: Application
    Filed: April 29, 2021
    Publication date: November 18, 2021
    Applicant: TDK CORPORATION
    Inventors: Toshihiro IGUCHI, Norihisa ANDO, Kenya TAMAKI, Kayou MATSUNAGA
  • Publication number: 20210358683
    Abstract: An electronic component according to the present invention includes: a leadout electrode portion provided on an outer surface of an element main body; and a resin electrode layer formed at a part of the outer surface of the element main body and connected to the leadout electrode portion. The leadout electrode portion contains copper as a main component, and the resin electrode layer includes a conductor powder containing silver, and a resin. Further, a diffusion layer containing copper oxide and silver is formed at an interface between the leadout electrode portion and the resin electrode layer.
    Type: Application
    Filed: May 14, 2021
    Publication date: November 18, 2021
    Applicant: TDK CORPORATION
    Inventors: Kyosuke INUI, Makoto MORITA, Takashi KUDO, Toshiyuki ANBO, Kyohei TONOYAMA, Fuyuki MIURA, Masanori SUGAI, Eietsu ABE, Toru TONOGAI, Yuichi OYANAGI
  • Publication number: 20210358676
    Abstract: A coil device includes a first core, a second core, and a conductor. The first core includes a first leg. The second core is disposed with a gap between the first leg and the second core. The conductor is at least partly disposed between the first core and the second core. A notch is formed on the conductor at a position corresponding to the gap.
    Type: Application
    Filed: May 12, 2021
    Publication date: November 18, 2021
    Applicant: TDK CORPORATION
    Inventors: Chen WANG, Satoshi SUGIMOTO
  • Patent number: 11175196
    Abstract: A fluid pressure detection device capable of accurately detecting a pressure change of a fluid flowing inside a tube includes a substrate, and piezoelectric elements on the top surface of the substrate. The substrate is substantially rectangular in shape. The piezoelectric elements are arranged along the longitudinal direction of the substrate with long sides of each of the piezoelectric elements substantially perpendicular to the long side of the substrate. The substrate has slits on both sides of each of the piezoelectric elements in the longitudinal direction of the substrate. When detecting the pressure, the tube is deformed with a bottom surface of the substrate.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: November 16, 2021
    Assignee: TDK Corporation
    Inventors: Mutsuko Nakano, Tomohiro Moriki
  • Patent number: 11175428
    Abstract: A metallic foreign object detector is used in a wireless power transmission system that transmits power by wireless from a feeding coil to a receiving coil and includes an antenna coil, a capacitor that forms a resonance circuit together with the antenna coil, a vibration detection circuit configured to detect generation of a vibration signal in the resonance circuit, and a determination circuit that detects the presence/absence of a metallic foreign object according to the vibration signal. The vibration detection circuit is configured to output a detection state signal indicating the detection state of generation of the vibration signal. The determination circuit is configured to execute an operation of detecting the presence/absence of a metallic foreign object according to the detection state signal.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: November 16, 2021
    Assignee: TDK CORPORATION
    Inventors: Kazunori Oshima, Akira Gotani, Kazuki Kondo
  • Patent number: 11175356
    Abstract: A magnetic sensor device includes a magnetic sensor detecting a detection-target magnetic field, and a soft magnetic structure near the sensor. In an orthogonal coordinate system having two orthogonal axes for representing an applied field strength and a magnetization-corresponding value, coordinates representing the applied field strength and the magnetization-corresponding value move along a minor loop not in contact with a major loop as the strength of an external magnetic field including the detection-target magnetic field varies within a variable range, where the applied field strength is a strength of a magnetic field applied to the soft magnetic structure, the magnetization-corresponding value is a value corresponding to magnetization of the soft magnetic structure, and the major loop is, among loops traced by a path of the coordinates as the applied field strength is varied, a loop that is the largest in terms of area of the region enclosed by the loop.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: November 16, 2021
    Assignee: TDK CORPORATION
    Inventors: Kazuya Watanabe, Hirokazu Takahashi
  • Patent number: 11175357
    Abstract: A magnetic sensor device includes a magnetic field converter that receives an input magnetic field input along a first direction and outputs an output magnetic field along a second direction, which is orthogonal to the first direction. A magnetic field detector is provided at a position where the output magnetic field can be applied. A magnetic shield that blocks an external magnetic field along the second direction, is provided. The magnetic field converter has a shape in which the length in a third direction, which is orthogonal to both the first direction and the second direction, is longer than the length in the second direction, when viewed along the first direction. The magnetic shield is provided at a position overlapping with the magnetic field converter and the magnetic field detector, when viewed along the first direction.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: November 16, 2021
    Assignee: TDK Corporation
    Inventors: Yongfu Cai, Yuta Saito
  • Publication number: 20210351232
    Abstract: A reservoir element according to an aspect of the present invention includes a plurality of ferromagnetic layers laminated in a first direction and separated from each other, at least one spin-orbit torque wiring that faces at least one of the plurality of ferromagnetic layers, and a spin transport layer that faces the plurality of ferromagnetic layers, connects at least the two ferromagnetic layers closest to each other among the plurality of ferromagnetic layers and transports spins.
    Type: Application
    Filed: November 21, 2018
    Publication date: November 11, 2021
    Applicant: TDK CORPORATION
    Inventor: Tomoyuki SASAKI
  • Publication number: 20210351341
    Abstract: A magnetic element includes a first ferromagnetic layer, and a first wiring that faces the first ferromagnetic layer in a first direction. The first wiring has a wiring portion extending in a second direction different from the first direction, and a wide width portion having a wider width than the wiring portion in a third direction intersecting the second direction when viewed from the first direction. A center position of the wiring portion in the third direction and a center position of the first ferromagnetic layer in the third direction are different from each other.
    Type: Application
    Filed: April 8, 2019
    Publication date: November 11, 2021
    Applicant: TDK CORPORATION
    Inventor: Tomoyuki SASAKI
  • Publication number: 20210351669
    Abstract: A magnet structure is a magnet structure for a TMR element which is an MR element. The magnet structure includes a bonded magnet compact that has a first main surface facing the TMR element, and a second main surface on a side opposite to the first main surface; and a tubular member that supports the bonded magnet compact. The bonded magnet compact has a gate portion which is provided on the second main surface and includes a gate mark formed by performing injection molding. The gate portion is provided at a position overlapping a center on the second main surface when seen from the second main surface side.
    Type: Application
    Filed: July 22, 2021
    Publication date: November 11, 2021
    Applicant: TDK Corporation
    Inventors: Naoki MORI, Yoshiaki OKADA
  • Publication number: 20210349693
    Abstract: A multiply-accumulate calculation device includes: multiple calculation units which generates output signals by multiplying an input signal corresponding to an input value and having a rising part, a signal part, and a falling part by a weight, and output the output signals; an accumulate calculation unit configured to calculate a sum of the output signals output from the plurality of multiple calculation units; and a correction unit configured to execute correction processing for correcting the sum of the output signals on the basis of a correction value including at least one of a first value incorporated into the sum by a current flowing into variable resistors of the multiple calculation units due to the rising part of the input signal, and a second value incorporated into the sum by a current flowing into the variable resistors of the multiple calculation units due to the falling part of the input signal.
    Type: Application
    Filed: October 11, 2018
    Publication date: November 11, 2021
    Applicant: TDK CORPORATION
    Inventors: Kuniyasu ITO, Tatsuo SHIBATA
  • Patent number: 11170923
    Abstract: A magnet structure, comprises: a plurality of permanent magnet members; and an adhesive layer bonding the permanent magnet members to each other, wherein the adhesive layer contains an adhesive, and a plurality of gap members, the gap members have insulation properties, each surface S of the permanent magnet members in contact with the adhesive layer has a plurality of convex parts, a reference plane is a plane including a mean line of a roughness curve of the surface S, Ry is a maximum value of heights of the convex parts from a deepest part of the surface S in a direction perpendicular to the reference plane, Rv is a distance between the reference plane and the deepest part, Rp is Ry?Rv, W1 is a width of the gap member in a direction perpendicular to the reference plane, and W1 is larger than 2Rp.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: November 9, 2021
    Assignee: TDK Corporation
    Inventors: Nobuo Takagi, Yousuke Hitomi
  • Patent number: 11169224
    Abstract: A magnetic field detection device includes a magnetic field detection element, a modulator, and a demodulator. The magnetic field detection element has a sensitivity axis in a first direction. The modulator is configured to apply, to the magnetic field detection element, a stress oscillating at a first frequency and including a component in a second direction, the second direction being orthogonal to the first direction. The demodulator is configured to demodulate an output signal having the first frequency and outputted from the magnetic field detection element, and detect, on a basis of an amplitude of the output signal, an intensity of a measurement magnetic field to be received by the magnetic field detection element.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: November 9, 2021
    Assignee: TDK CORPORATION
    Inventors: Kenzo Makino, Hiraku Hirabayashi
  • Patent number: 11168022
    Abstract: A glass ceramics sintered body includes a glass phase and a ceramics phase dispersed in the glass phase. The ceramics phase includes alumina grains and zirconia grains. The glass phase includes an MO—Al2O3—SiO2—B2O3 based glass, where M is an alkaline earth metal. An area ratio of the alumina grains is 13 to 30%, and an area ratio of the zirconia grains is 0.05 to 6%, on a cross section of the sintered body.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: November 9, 2021
    Assignee: TDK CORPORATION
    Inventors: Shusaku Umemoto, Takashi Suzuki, Hidekazu Sato, Masaki Takahashi, Shinichi Kondo
  • Patent number: 11167541
    Abstract: An apparatus for manufacturing an element array includes a substrate hold means, a laser radiation device, and a collection mechanism. The substrate hold means holds a substrate including an adhesive layer on which elements are attached in a predetermined array while a surface of the adhesive layer is inclined relative to a horizontal surface at a predetermined angle. The laser radiation device radiates a laser to a specific element among the elements attached on the adhesive layer. The collection mechanism is disposed below the substrate and configured to receive the specific element falling by the laser radiation.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: November 9, 2021
    Assignee: TDK CORPORATION
    Inventors: Toshinobu Miyagoshi, Seijiro Sunaga, Osamu Shindo, Yasuo Kato