Patents Assigned to TDK
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Publication number: 20240128884Abstract: A switching control unit is applicable to an electric power conversion apparatus. The electric power conversion apparatus includes: a transformer; an inverter circuit including first switching devices; a synchronous rectifying circuit including second switching devices serving as rectifying devices; and a smoothing circuit. The switching control unit includes: a first current detection circuit detecting a peak current value of a secondary current; a second current detection circuit detecting an output current value; and a control circuit controlling respective operations of the first switching devices of the inverter circuit and respective operations of the second switching devices of the synchronous rectifying circuit. The control circuit sets a timing of switching from an on-state to an off-state of each of the second switching devices based on the peak current value detected by the first current detection circuit and the output current value detected by the second current detection circuit.Type: ApplicationFiled: September 12, 2023Publication date: April 18, 2024Applicant: TDK CORPORATIONInventor: Akihiro II
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Publication number: 20240125873Abstract: A magnetic sensor includes a substrate including a top surface; an insulating layer disposed on the substrate, the insulating layer including first and second inclined surfaces each inclined with respect to the top surface of the substrate; and an MR element. The MR element is disposed on the first inclined surface or the second inclined surface. The MR element includes a first side surface including a first portion and a second portion, the first portion and the second portion having different angles with respect to the first inclined surface or the second inclined surface.Type: ApplicationFiled: December 21, 2023Publication date: April 18, 2024Applicant: TDK CORPORATIONInventors: Hidekazu KOJIMA, Kenzo Makino, Hiraku Hirabayashi
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Publication number: 20240128463Abstract: A laminated resin film includes: a resin layer; and a Cu film provided on one surface or both surfaces of the resin layer, in which in the Cu film, a peak intensity y of a (200) plane is 2 to 30 when a peak intensity of a (111) plane in X-ray diffraction measurement is set to 100, and Expression (1) is satisfied. y?2.5×?7.5??Expression (1) (in Expression (1), y is the peak intensity of the (200) plane when the peak intensity of the (111) plane in the X-ray diffraction measurement is set to 100, and x is a peak intensity of a (220) plane when the peak intensity of the (111) plane in the X-ray diffraction measurement is set to 100.Type: ApplicationFiled: February 18, 2021Publication date: April 18, 2024Applicant: TDK CORPORATIONInventors: Makoto ENDO, Mingyu CHEN, Yoshihiro KANBAYASHI, Takasi SATOU, Natsumi KOZAI, Yoshihiko TANABE, Syuji TSUKAMOTO, Miyuki YANAGIDA
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Publication number: 20240130247Abstract: This spin current magnetization rotational type magnetoresistive element includes a magnetoresistive effect element having a first ferromagnetic metal layer having a fixed magnetization orientation, a second ferromagnetic metal layer having a variable magnetization orientation, and a non-magnetic layer sandwiched between the first ferromagnetic metal layer and the second ferromagnetic metal layer, and spin-orbit torque wiring which extends in a direction that intersects the stacking direction of the magnetoresistive effect element, and is connected to the second ferromagnetic metal layer, wherein the electric current that flows through the magnetoresistive effect element and the electric current that flows through the spin-orbit torque wiring merge or are distributed in the portion where the magnetoresistive effect element and the spin-orbit torque wiring are connected.Type: ApplicationFiled: December 27, 2023Publication date: April 18, 2024Applicant: TDK CORPORATIONInventor: Tomoyuki Sasaki
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Publication number: 20240128944Abstract: An electronic component includes a stack including a plurality of first conductors and a plurality of second conductors. The plurality of first conductors include a first conductor group. The plurality of second conductors include a second conductor group arranged in a region adjacent to a region where the first conductor group is arranged. The plurality of first conductors further include a third conductor group arranged in a region adjacent to the region where the second conductor group is arranged and located to sandwich, with the region where the first conductor group is arranged, the region where the second conductor group is arranged. The first conductor group constitutes a plurality of parallel resonant circuits. The second conductor group constitutes a serial resonant circuit. The third conductor group constitutes another parallel resonant circuit.Type: ApplicationFiled: October 11, 2023Publication date: April 18, 2024Applicant: TDK CORPORATIONInventor: Toshiyuki TAKAMI
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Publication number: 20240128018Abstract: A high-frequency coil component includes a sealing portion containing a resin and a plurality of hollow particles, and a coil portion composed of a wound conductive wire. The coil portion is sealed in the sealing portion. The resin includes a low-dielectric resin having a relative permittivity ?r1 of 2.00 or more and less than 3.00 at 23±2° C. A mass of the resin is represented by Mr. A total mass of the plurality of hollow particles is represented by Mp. Mr/(Mr+Mp) is 25% or more and 85% or less.Type: ApplicationFiled: October 11, 2023Publication date: April 18, 2024Applicant: TDK CORPORATIONInventors: Shigeki YANAGIDA, Masashi GOTOH, Shintarou KOIKE, Junichiro URABE
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Publication number: 20240128496Abstract: An all-solid-state secondary battery includes a laminate which includes a plurality of positive electrode layers each having a positive electrode active material layer, a plurality of negative electrode layers each having a negative electrode active material layer, and a plurality of solid electrolyte layers each containing a solid electrolyte, and in which the positive electrode layers and the negative electrode layers are alternately laminated with the solid electrolyte layers interposed therebetween, and the plurality of solid electrolyte layers include an outermost solid electrolyte layer disposed on both end sides of the laminate in a lamination direction and being thinnest among the plurality of solid electrolyte layers, and an inner solid electrolyte layer disposed inward relative to the outermost solid electrolyte layer and being thicker than the outermost solid electrolyte layer.Type: ApplicationFiled: March 18, 2022Publication date: April 18, 2024Applicant: TDK CORPORATIONInventors: Keiko TAKEUCHI, Kazumasa TANAKA, Keitaro OTSUKI
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Publication number: 20240128619Abstract: An all-solid-state battery includes a positive electrode layer including a positive electrode active material layer and a positive electrode current collector; a negative electrode layer including a negative electrode active material layer and a negative electrode current collector; a solid electrolyte layer; and an insulating film, in which the insulating film has therein a through-hole in which a laminate in which the positive electrode active material layer, the solid electrolyte layer, and the negative electrode active material layer are sequentially stacked is housed, the laminate and the insulating film are arranged between the positive electrode current collector and the negative electrode current collector, and an external shape of the insulating film is larger than external shapes of the positive electrode current collector and the negative electrode current collector when viewed in a plan view in a laminating direction of the laminate.Type: ApplicationFiled: March 9, 2022Publication date: April 18, 2024Applicant: TDK CORPORATIONInventors: Shinya WATANABE, Wen MA
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Publication number: 20240128020Abstract: In a method for manufacturing a laminated coil component, in which a laminated coil component is manufactured by laminating insulator sheets in order on which conductors having predetermined patterns are formed, the insulator sheets are laminated such that a distance in a lamination direction between a first lead-out conductor laminated first and a first coil conductor laminated next is larger than a distance in the lamination direction between a second lead-out conductor laminated last and a second coil conductor laminated immediately before the second lead-out conductor.Type: ApplicationFiled: September 26, 2023Publication date: April 18, 2024Applicant: TDK CORPORATIONInventors: Yuya OSHIMA, Junichi OTSUKA, Yohei TADAKI, Shinichi KONDO, Koki ITO, Yoji TOZAWA, Shigeshi OSAWA, Tsubasa OZAWA, Makoto YOSHINO
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Publication number: 20240128017Abstract: A coil device includes a first coil a first coil formed by a first wire wound in a coil shape and a second coil formed by a second wire wound in a coil shape. The first coil includes a first portion provided inside the second coil and a second portion next to the first portion and the second coil along a winding axis of the first portion. A layer number of the first portion in its radial direction is one. A layer number of the second portion in its radial direction is plural.Type: ApplicationFiled: October 11, 2023Publication date: April 18, 2024Applicant: TDK XIAMEN CO., LTD.Inventors: Hiroshi MAEDA, XiaoBo ZHOU, ZhenSheng LIU, XueSong GUO
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Publication number: 20240128006Abstract: A laminated coil component includes: an element body having a first surface and a second surface facing each other in a first direction; a coil unit formed by laminating a plurality of coil conductors in a second direction orthogonal to the first direction inside the element body; a first lead-out conductor; and a second lead-out conductor. A first coil conductor adjacent to the first lead-out conductor in the second direction includes a first side portion extending along the first surface, on a first surface side. A second coil conductor adjacent to the second lead-out conductor in the second direction includes a second side portion extending along the second surface, on a second surface side. The first side portion has a larger line width than other side portions of the first coil conductor and the second side portion.Type: ApplicationFiled: October 11, 2023Publication date: April 18, 2024Applicant: TDK CORPORATIONInventors: Yuya OSHIMA, Hiroshi ONO, Ryosuke HORIE, Daiki YAMADA, Yuki AKASAKA, Shuichi WATANABE, Satoshi TAKASU, Makoto YOSHINO, Takahiro YATA
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Publication number: 20240125659Abstract: A stacked electrode is provided on a strain resistance film, wherein: the strain resistance film contains Cr and Al; the stacked electrode has a contact layer that overlaps the strain resistance film, a diffusion prevention layer that overlaps the contact layer, and a mounting layer that overlaps the diffusion prevention layer; and the diffusion prevention layer or the mounting layer covers the contact layer so that an end surface of the contact layer is not exposed.Type: ApplicationFiled: February 25, 2022Publication date: April 18, 2024Applicant: TDK CORPORATIONInventors: Masanori KOBAYASHI, Ken UNNO, Tetsuya SASAHARA, Kohei NAWAOKA
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Patent number: 11961676Abstract: An electronic device 10 comprises chip capacitors 20a and 20b, an accommodation recess 62 accommodating the chip capacitors 20a and 20b, and a case 60 including a protrusion 64 partitioning the accommodation recess 62 into a first accommodation space 62a and a second accommodation space 62b along the X-axis direction. The protrusion 64 includes a first protrusion 64a and a second protrusion 64b disposed away from the first protrusion 64a along the Y-axis direction. The first protrusion 64a and the second protrusion 64b are disposed with a communication space 69 provided between the first protrusion 64a and the second protrusion 64b, so that the first accommodation space 62a and the second accommodation space 62b communicate.Type: GrantFiled: June 23, 2022Date of Patent: April 16, 2024Assignee: TDK CORPORATIONInventors: Akihiro Masuda, Shinya Ito, Norihisa Ando, Kosuke Yazawa, Yoshiki Satou, Katsumi Kobayashi
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Patent number: 11961650Abstract: A coil arrangement with reduced losses and a stabilized coupling factor. For this purpose, the arrangement has a coil core and a first winding, the turns of which are distributed over several sections which are spaced apart from one another.Type: GrantFiled: September 25, 2020Date of Patent: April 16, 2024Assignee: TDK Electronics AGInventor: Thomas Lohmann
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Patent number: 11959979Abstract: This sensor unit includes a base having a substantially-rectangular planar shape including a first side and a second side that are substantially orthogonal to each other, and a plurality of first sensors provided on the base and arranged on a first axis. The first axis is substantially parallel to the first side and passes through a center position of the base.Type: GrantFiled: March 8, 2023Date of Patent: April 16, 2024Assignee: TDK CORPORATIONInventors: Kunihiro Ueda, Yoshimitsu Wada, Hiraku Hirabayashi, Kazuma Yamawaki, Tsuyoshi Umehara
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Patent number: 11958271Abstract: In an embodiment a method for producing a substrate includes forming a green sheet stack including first green sheets and second green sheets, wherein each of the first green sheets and the second green sheets contains a ceramic material as a main component, and wherein the second green sheets further contain a sintering aid in addition to the ceramic material.Type: GrantFiled: December 5, 2019Date of Patent: April 16, 2024Assignee: TDK Electronics AGInventors: Nele Reimer, Manfred Schweinzger
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Patent number: 11961652Abstract: In a coil component, a shield layer is provided after the unevenness of the surface of an element body is smoothened by the surface being covered with an insulating layer. A Cu layer of the shield layer is provided on a smooth surface, and thus a thickness variation can be suppressed and the Cu layer can be formed with a substantially uniform thickness. In the coil component, a point where the shield layer is thin or a point lacking the shield layer is unlikely to be generated and a functional degradation of the shield layer is effectively suppressed.Type: GrantFiled: October 24, 2019Date of Patent: April 16, 2024Assignee: TDK CORPORATIONInventors: Hitoshi Ohkubo, Masazumi Arata, Kenichi Kawabata, Atsushi Sato
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Patent number: 11963449Abstract: To increase thermoelectromotive voltage of a thermoelectric conversion element with a magnetization direction, a temperature gradient direction, and an electromotive force direction orthogonal to each other. A thermoelectric conversion element 1 is formed by annularly winding a thermoelectric material which is radially magnetized and circumferentially generates an electromotive force in accordance with a temperature gradient in the axial direction thereof. Thus, the thermoelectric material is wound not linearly but annularly, so that a connection line for connecting a plurality of thermoelectric materials is not necessary. In particular, when the thermoelectric material is wound in a plurality of turns, the length per unit area of the thermoelectric material in the direction of the electromotive force can be significantly increased, making it possible to significantly increase thermoelectromotive voltage while suppressing increase in the size of the element.Type: GrantFiled: October 5, 2020Date of Patent: April 16, 2024Assignee: TDK CORPORATIONInventors: Youhei Noda, Shota Suzuki
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Patent number: 11962211Abstract: A vibration module is provided, having a main axis passing through the center of the vibration module. The vibration module includes a fixed part and a first vibration part. The first vibration part is disposed within the fixed part. The first vibration part includes a first moving member and a first driving assembly. The first driving assembly drives the first moving member to move along the main axis relative to the fixed part.Type: GrantFiled: August 28, 2020Date of Patent: April 16, 2024Assignee: TDK TAIWAN CORP.Inventors: Chao-Chang Hu, Liang-Ting Ho, Che-Wei Chang
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Patent number: 11959943Abstract: A magnetic field detection apparatus includes a magnetoresistive effect element and a conductor. The magnetoresistive effect element includes a magnetoresistive effect film extending in a first axis direction and including a first end part, a second end part, and an intermediate part between the first and second end parts. The conductor includes a first part and a second part that each extend in a second axis direction inclined with respect to the first axis direction. The conductor is configured to be supplied with a current and thereby configured to generate an induction magnetic field to be applied to the magnetoresistive effect film in a third axis direction orthogonal to the second axis direction. The first part and the second part respectively overlap the first end part and the second end part in a fourth axis direction orthogonal to both of the second axis direction and the third axis direction.Type: GrantFiled: May 26, 2022Date of Patent: April 16, 2024Assignee: TDK CORPORATIONInventors: Norikazu Ota, Kenzo Makino, Hiraku Hirabayashi