Patents Assigned to TDK Corporation
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Publication number: 20240085499Abstract: A magnetic sensor device includes a stacked structure including a sensor substrate and a sensor element circuitry. The sensor substrate has a surface and a perimeter. The sensor element circuitry is provided on the surface of the sensor substrate, has a perimeter, and includes one or more magnetic sensor elements. As viewed in a plane parallel to the surface, a portion or all of the perimeter of the sensor element circuitry is located at a position different from a position of the perimeter of the sensor substrate.Type: ApplicationFiled: August 11, 2023Publication date: March 14, 2024Applicant: TDK CORPORATIONInventors: Kazuma YAMAWAKI, Shuhei MIYAZAKI
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Publication number: 20240087816Abstract: A high-voltage feedthrough capacitor includes: a capacitor including an element body in which a through hole extending is formed, and a first electrode and a second electrode disposed facing each other on the element body; a feedthrough conductor inserted through the through hole and electrically connected to the first electrode; a grounding fitting electrically connected to the second electrode; and a first case and a second case. The element body includes: a first end face and a second end face; a first protruding part in which the through hole opens, the first protruding part being provided on the first end face; and a second protruding part in which the through hole opens, the second protruding part being provided on the second end face. The first case is attached to the first protruding part. The second case is attached to the second protruding part.Type: ApplicationFiled: September 12, 2023Publication date: March 14, 2024Applicant: TDK CORPORATIONInventors: Hisashi TANAKA, Yuta KAMO
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Publication number: 20240087812Abstract: An electronic component includes a component body, a metal terminal, and a bonding material. The component body includes an element body and an external electrode. The metal terminal includes a first main surface and a second main surface, and a side surface. The bonding material electrically and physically connects the external electrode and the metal terminal. The metal terminal includes a first metal layer including the first main surface, a second metal layer including the second main surface, and a terminal body including the side surface. The terminal body is exposed at the side surface, and the first metal layer and the second metal layer are separated from each other on the side surface. Each of the first metal layer and the second metal layer includes a Ni plated layer. The terminal body includes Cu. The bonding material includes solder.Type: ApplicationFiled: July 26, 2023Publication date: March 14, 2024Applicant: TDK CORPORATIONInventors: Toshihiro IGUCHI, Hisashi KOBAYASHI, Norihisa ANDO, Kenya TAMAKI
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Publication number: 20240087798Abstract: A coil component includes a coil configured of a winding, an exterior body provided to cover the coil, and a terminal part configured to be continuous with the winding. A proximal end portion of the terminal part is buried in the exterior body. A distal end portion ahead of the proximal end portion is bent from the proximal end portion and located outside a mounting surface of the exterior body along the mounting surface.Type: ApplicationFiled: April 20, 2023Publication date: March 14, 2024Applicant: TDK CORPORATIONInventors: Junichiro URABE, Toshinori MATSUURA, Hajime KATO, Shintarou KOIKE, Kazushige TOHTA, Takuto KAZAMA, Masashi GOTOH
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Patent number: 11927582Abstract: A method for testing a gas sensor and a gas sensor are disclosed. In an embodiment a method for testing at least one gas sensor includes exposing in a first measurement the gas sensor to a test gas under first gas conditions including a first pressure and exposing in a second measurement the gas sensor to the test gas under second gas conditions including a second pressure, the second gas conditions being different from the first gas conditions, wherein the second pressure is different from the first pressure, and/or wherein the gas sensor is exposed to an intermediate pressure different from the first pressure between the first measurement and the second measurement.Type: GrantFiled: September 25, 2020Date of Patent: March 12, 2024Assignee: TDK CorporationInventor: Matthias König
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Patent number: 11927648Abstract: An object of the present invention is to provide a magnetic sensor less subject to an environmental magnetic field. A magnetic sensor includes magnetic detection elements MR1 to MR4 positioned on a first plane P1 and a magnetic member 30A provided on a second plane P2. The magnetic member 30A includes first and second leg parts 41 and 42 and a first main body part 51 positioned between the first and second leg parts 41 and 42 so as to form a first space 61 between itself and the second plane P2. The magnetic detection elements MR1 to MR4 are covered with the first main body part 51. According to the present invention, magnetic field to be detected is collected to the first and second leg parts 41 and 42, and the magnetic detection elements MR1 to MR4 are covered with the first main body part 51, thereby allowing an environmental magnetic field acting as noise to bypass the magnetic detection elements MR1 to MR4 through the first main body part 51.Type: GrantFiled: April 3, 2023Date of Patent: March 12, 2024Assignee: TDK CORPORATIONInventor: Kei Tanabe
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Patent number: 11927649Abstract: A magnetoresistance effect element includes a first ferromagnetic layer, a second ferromagnetic layer, a nonmagnetic layer that is disposed between the first ferromagnetic layer and the second ferromagnetic layer, and an insertion layer that is disposed at least one of a position between the first ferromagnetic layer and the nonmagnetic layer and a position between the second ferromagnetic layer and the nonmagnetic layer, in which the nonmagnetic layer is composed of an oxide containing Mg and Ga, and the insertion layer is a ferromagnetic component containing Ga.Type: GrantFiled: March 8, 2021Date of Patent: March 12, 2024Assignee: TDK CORPORATIONInventors: Shogo Yonemura, Tomoyuki Sasaki, Shinto Ichikawa
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Patent number: 11930713Abstract: A piezoelectric element includes a piezoelectric body, an electrode layer, and a reinforcing layer. The piezoelectric body has a first main surface, a second main surface, and a side surface. The first main surface and the second main surface oppose each other. The side surface extends in an opposing direction in which the first main surface and the second main surface oppose each other in such a way as to connect the first main surface and the second main surface. The electrode layer is provided in the piezoelectric body. The reinforcing layer is provided on the first main surface. The electrode layer is provided opposing the first main surface and apart from the side surface. When viewed from the opposing direction, the electrode layer has a corner. When viewed from the opposing direction, the reinforcing layer overlaps the corner.Type: GrantFiled: April 3, 2019Date of Patent: March 12, 2024Assignee: TDK CORPORATIONInventors: Yoshiki Ohta, Hideya Sakamoto, Kazushi Tachimoto, Yoshikazu Shimura, Tetsuyuki Taniguchi, Akihiro Takeda
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Publication number: 20240079176Abstract: A coil device includes: a bobbin having a winding core portion with a hollow cylindrical shape; a core at least partially disposed inside the winding core portion; a wire having a coil portion wound around the winding core portion and a lead portion having a wire connection portion led out from the coil portion to extend substantially parallel to a winding axis O of the coil portion; and a terminal portion having a connection portion connected to the wire at the wire connection portion. A connection portion inner end, which is a position closest to the winding axis in an X-axis direction perpendicular to the winding axis O, of contact portions of the wire connection portion in the connection portion is disposed closer to the winding axis O in the X-axis direction than a first outer end portion located at a position farthest from the winding axis O in the X-axis direction in the bobbin.Type: ApplicationFiled: August 28, 2023Publication date: March 7, 2024Applicant: TDK CORPORATIONInventors: Toshiyuki HORIKAWA, Shinji HIGA
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Publication number: 20240079165Abstract: A soft magnetic powder including a first particle group including particles having a particle size of D50 or more and a second particle group including particles having a particle size of less than D50. An average value of circularities of the particles belonging to the first particle group is defined as a first average circularity C1, and an average value of circularities of the particles belonging to the second particle group is defined as a second average circularity C2, and C1<C2 is satisfied.Type: ApplicationFiled: August 29, 2023Publication date: March 7, 2024Applicant: TDK CORPORATIONInventors: Yuta NAKAGAWA, Kazuhiro YOSHIDOME, Isao NAKAHATA
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Publication number: 20240079177Abstract: A multilayer coil component includes an element body, a plurality of coil conductors, a first resistive layer, and a second resistive layer. The plurality of coil conductors are disposed in the element body and electrically connected to each other. The plurality of coil conductors include a first coil conductor and a second coil conductor adjacent to each other. The first resistive layer and the second resistive layer oppose each other between the first coil conductor and the second coil conductor. The first resistive layer is in contact with the first coil conductor.Type: ApplicationFiled: July 26, 2023Publication date: March 7, 2024Applicant: TDK CORPORATIONInventors: Yusuke NAGAI, Kazuhiro EBINA, Takahiro SATO, Masaki TAKAHASHI, Takashi ENDO, Yuya ISHIMA, Kosuke ITO, Takuya MIYASHITA
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Patent number: 11921111Abstract: A magnetic sensor used to detect detection substances in samples includes a substrate having a first surface and a second surface, which is opposite to the first surface, a magnetoresistance effect element, which is provided on the first surface and in which the resistance of the magnetoresistance effect element changes in accordance with an input magnetic field, and a protective layer that covers the magnetoresistance effect element. The magnetoresistance effect element is configured in a line shape extending in a first direction on the first surface, and has a first region that is positioned at the outer periphery in a plan view, and a second region that is surrounded by the first region. The height of a top surface of the protective layer on the first region is greater than the height of a top surface of the protective layer on the second region.Type: GrantFiled: February 11, 2020Date of Patent: March 5, 2024Assignee: TDK CorporationInventor: Keisuke Takasugi
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Patent number: 11925123Abstract: This spin-orbit torque type magnetization rotational element (10) is provided with: a spin-orbit torque wiring (2); a first ferromagnetic layer (1) that is laminated on the spin-orbit torque wiring; a first nonmagnetic metal layer (3) and a second nonmagnetic metal layer (4) that are connected to the spin-orbit torque wiring at positions flanking the first ferromagnetic layer in a plan view from the second direction, and a first insulating layer (31) surrounding the spin-orbit torque wiring, wherein the gravity center (G) of the first ferromagnetic layer is positioned on a side closer to the first nonmagnetic metal layer or the second nonmagnetic metal layer than is a reference point (S) located at the center between the first and second nonmagnetic metal layers in the first direction, and the first insulating layer is any one selected from the group consisting of silicon nitride, aluminum nitride, aluminum oxide, and magnesium oxide.Type: GrantFiled: November 1, 2021Date of Patent: March 5, 2024Assignee: TDK CORPORATIONInventors: Eiji Komura, Tomoyuki Sasaki
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Publication number: 20240068846Abstract: A magnetic sensor includes a bridge circuit including a first arm and a second arm, a first substrate, and a second substrate. The first arm is provided on the first substrate. The second arm is provided on the second substrate. The first arm includes a first resistor and a second resistor connected in series. The second arm includes a third resistor and a fourth resistor connected in series. The second substrate is located at a position away from the first substrate so that a phase of a resistance of the second arm when a target magnetic field changes periodically is different from that of a resistance of the first arm when the target magnetic field change periodically.Type: ApplicationFiled: August 9, 2023Publication date: February 29, 2024Applicant: TDK CORPORATIONInventor: Yongfu CAI
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Publication number: 20240068888Abstract: A detection device includes a base plate, a piezoelectric element disposed on the base plate with an insulating member therebetween and generating a pressing force corresponding to an electromotive force, an electrostatic capacitance sensor detecting an electrostatic capacitance of the base plate, a wiring member (first wiring member) electrically connected to the piezoelectric element, and a wiring member (second wiring member) electrically connected to the electrostatic capacitance sensor.Type: ApplicationFiled: July 11, 2023Publication date: February 29, 2024Applicant: TDK CORPORATIONInventor: Takashi KATO
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Publication number: 20240071662Abstract: The metal magnetic powder includes Co as a main component, and an average particle size (D50) of 1 nm to 100 nm. An X-ray diffraction chart of the metal magnetic powder has a first peak that appears in a range of a diffraction angle 2? of 41.6±0.3°, and a second peak that appears in a range of a diffraction angle 20? of 47.4±0.3°. When a full width at half maximum of the first peak is set as FW1, and a full width at half maximum of the second peak is set as FW2, a ratio (FW2/FW1) of FW2 to FW1 is 1 to 5.Type: ApplicationFiled: August 25, 2023Publication date: February 29, 2024Applicant: TDK CORPORATIONInventors: Kyohei TAKAHASHI, Hiroshi ITO, Isao KANADA
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Publication number: 20240072239Abstract: A laminated body contains a first metal layer containing copper and a second metal layer containing nickel and directly laminated on the first metal layer. A full width at half maximum of an X-ray diffraction peak having the maximum intensity among at least one X-ray diffraction peak derived from a nickel-containing crystal in the second metal layer is 0.3° or more and 1.2° or less.Type: ApplicationFiled: December 13, 2021Publication date: February 29, 2024Applicant: TDK CORPORATIONInventors: Yuhei HORIKAWA, Makoto ENDO, Takuya KAKIUCHI, Miyuki YANAGIDA, Yuki NAITO, Takahiro TASHIRO
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Publication number: 20240074326Abstract: A magnetoresistance effect element includes a laminated body having a first ferromagnetic layer, a second ferromagnetic layer, and a nonmagnetic layer located between the first ferromagnetic layer and the second ferromagnetic layer, a first wiring connected to the laminated body, a sidewall insulating layer configured to cover at least a part of a side surface of the laminated body, a first electrode connected to a side of the laminated body opposite to the first wiring, and a second electrode and a third electrode provided on both sides of the laminated body with the sidewall insulating layer sandwiched therebetween, sandwiching the laminated body, and connected to the first wiring.Type: ApplicationFiled: March 12, 2021Publication date: February 29, 2024Applicant: TDK CORPORATIONInventors: Yugo ISHITANI, Tomoyuki SASAKI
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Publication number: 20240074039Abstract: A transient voltage protection device includes an element body formed with a cavity inside, a pair of external electrodes on the element body, and a pair of internal electrodes in the element body. The pair of internal electrodes oppose each other. Each internal electrode is connected to a corresponding external electrode of the pair of external electrodes. The element body includes a first inner surface and a second inner surface. The first and second inner surfaces define the cavity and oppose each other. The pair of internal electrodes are exposed to the cavity and disposed on the first inner surface. In a cross section along a direction in which the first inner surface and the second inner surface oppose each other, the first inner surface includes a contour different from a contour included in the second inner surface.Type: ApplicationFiled: July 20, 2023Publication date: February 29, 2024Applicant: TDK CORPORATIONInventors: Naoyoshi YOSHIDA, Masato HAYATSU, Shunsuke TAKAHASHI, Sota HIRABA
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Publication number: 20240074320Abstract: A piezoelectric element includes a piezoelectric body and first, second, third, and fourth electrode layers disposed in the piezoelectric body. Each of the first, second, third, and fourth electrode layers includes a pair of first electrodes and a pair of second electrodes. The first and second electrodes included in the first electrode layer oppose the second and first electrodes included in the second electrode layer, respectively, with a part of the piezoelectric body. The first and second electrodes included in the second electrode layer oppose the first and second electrodes included in the third electrode layer, respectively, with a part of the piezoelectric body. The first and second electrodes included in the third electrode layer oppose the second and first electrodes included in the fourth electrode layer, respectively, with a part of the piezoelectric body.Type: ApplicationFiled: August 23, 2023Publication date: February 29, 2024Applicant: TDK CORPORATIONInventors: Shuto ONO, Satoshi SASAKI, Yasuyuki SATOH, Keiji OGUCHI