Patents Assigned to TDK Corporation
  • Patent number: 10801993
    Abstract: A chemical sensor that enables high detection accuracy that includes a soft-magnetic-material film, a magnetoresistance-effect element, a first film disposed over the soft-magnetic-material film, and a second film disposed over the magnetoresistance-effect element, wherein, when viewed from a direction perpendicular to the film surface of the soft-magnetic-material film, the soft-magnetic-material film is disposed at least partially so as not to overlap the magnetoresistance-effect element; when viewed from the direction perpendicular to the film surface of the soft-magnetic-material film, the magnetoresistance-effect element is disposed at least partially so as not to overlap the soft-magnetic-material film; and the second film has higher solubility in a specific liquid than the first film.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: October 13, 2020
    Assignee: TDK CORPORATION
    Inventors: Sachio Tsuboike, Susumu Haratani, Sumiko Kitagawa, Takashi Kikukawa, Haruki Yuga
  • Patent number: 10799863
    Abstract: A chemical sensor that enables high detection accuracy. A chemical sensor includes a substrate, a magnetoresistance-effect element disposed over the substrate, a first film disposed over the magnetoresistance-effect element, and a second film disposed in a region in the vicinity of the magnetoresistance-effect element or over a region in the vicinity of the magnetoresistance-effect element, wherein the second film has higher solubility in a specific liquid than the first film.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: October 13, 2020
    Assignee: TDK CORPORATION
    Inventors: Sachio Tsuboike, Susumu Haratani, Sumiko Kitagawa, Takashi Kikukawa, Haruki Yuga
  • Patent number: 10799864
    Abstract: To provide a chemical sensor that enables high detection accuracy. A chemical sensor includes a substrate, two or more magnetoresistance-effect elements disposed side by side in a substrate in-plane direction over the substrate, a first film disposed over a region between the magnetoresistance-effect elements adjacent to each other, and a second film disposed over the magnetoresistance-effect elements, wherein the second film has higher solubility in a specific liquid than the first film.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: October 13, 2020
    Assignee: TDK CORPORATION
    Inventors: Sachio Tsuboike, Susumu Haratani, Sumiko Kitagawa, Takashi Kikukawa, Haruki Yuga
  • Patent number: 10804035
    Abstract: A ceramic electronic device includes multiple chip components and a pair of metal terminal portions. The chip components consist of a pair of chip end surfaces and four chip side surfaces. Terminal electrodes are formed on the pair of chip end surfaces. The pair of metal terminal portions is arranged correspondingly with the pair of chip end surfaces. Each of the pair of metal terminal portions includes an electrode face portion, multiple pairs of engagement arm portions, and a mount portion. The electrode face portion faces the chip end surface. The multiple pairs of engagement arm portions extend from the electrode face portion toward the chip side surface and sandwich and hold the chip components. The mount portion extends from one of terminal second sides toward the chip components and is partially substantially vertical to the electrode face portion.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: October 13, 2020
    Assignee: TDK CORPORATION
    Inventors: Norihisa Ando, Katsumi Kobayashi, Sunao Masuda, Masahiro Mori, Kayou Matsunaga, Kosuke Yazawa
  • Patent number: 10804032
    Abstract: A multilayer capacitor includes an element assembly, a first external electrode, a second external electrode, and a plurality of internal electrodes which are disposed at the inside of the element assembly. The plurality of internal electrodes include a first internal electrode that is electrically connected to the first external electrode, a second internal electrode that is electrically connected to the second external electrode, and a plurality of third internal electrodes. The plurality of third internal electrodes are electrically connected to each other by a first connection conductor and a second connection conductor, a first capacitance portion is constituted by the first internal electrode and the third internal electrodes, a second capacitance portion is constituted by the second internal electrode and the third internal electrodes, and the first capacitance portion and the second capacitance portion are electrically connected in series.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: October 13, 2020
    Assignee: TDK CORPORATION
    Inventors: Takeru Yoshida, Takuya Imaeda, Shogo Murosawa, Hideki Kamo, Naoto Imaizumi, Keiichi Takizawa
  • Patent number: 10804026
    Abstract: A method of manufacturing an inductor element includes preparing an insert member including a winding portion where a conductor is wound in a coil shape. A plurality of preliminary green compacts is obtained by conducting a preliminary compression molding of a granule containing a magnetic powder and a resin at a pressure of 2.5×102 to 1×103 MPa. The insert member and the plurality of preliminary green compacts are integrated so that a joint interface of the plurality of preliminary green compacts is formed intermittently.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: October 13, 2020
    Assignee: TDK CORPORATION
    Inventors: Yasuhide Yamashita, Katsushi Yasuhara, Chiomi Sato
  • Patent number: 10804870
    Abstract: Provided is a magnetoresistance effect device that functions as a high frequency device such as a high frequency filter or the like. The magnetoresistance effect device includes a magnetoresistance effect element having a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, a first signal line configured to generate a high frequency magnetic field as a high frequency current flows, a direct current application terminal to which a power supply is able to be connected to cause a direct current to flow to the magnetoresistance effect element in a lamination direction, and an independent magnetic body configured to receive a high frequency magnetic field generated in the first signal line to oscillate magnetization and apply a magnetic field generated through the magnetization to the magnetoresistance effect element.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: October 13, 2020
    Assignee: TDK CORPORATION
    Inventor: Takekazu Yamane
  • Patent number: 10804033
    Abstract: The object of the present invention is to provide a dielectric ceramic composition having good properties, particularly good IR property and high temperature accelerated lifetime. The dielectric ceramic composition of the present invention has a main component made of a perovskite type compound expressed by a compositional formula of (Ba1-x-ySrxCay)m(Ti1-zZrz)O3 (note that, m, x, y, and z of the above compositional formula all represent molar ratios, and each satisfies 0.9?m?1.1, 0?x?0.5, 0?y?0.3, 0?(x+y)?0.6, and 0.03?z?0.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: October 13, 2020
    Assignee: TDK CORPORATION
    Inventors: Dan Sakurai, Toshihiko Kaneko, Nobuto Morigasaki, Toshinari Takahashi, Yasuhiro Ito
  • Patent number: 10804709
    Abstract: Disclosed herein is a coil unit that includes a coil, a magnetic member having a first surface facing to the coil and a second surface opposite to the first surface, a first metal shield covering the second surface of the magnetic member, and a second metal shield disposed so as to surround the coil. The first metal shield is disposed spaced apart in the axial direction of the coil from the second surface in a region between an end portion of the magnetic member and the second metal shield. A length Lp of a protruding part of the second shield that protrudes forward from a reference plane that is coplanar with the first surface in the axial direction of the coil is smaller than a first distance Ly from the end portion of the magnetic member to the second metal shield.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: October 13, 2020
    Assignee: TDK CORPORATION
    Inventors: Kota Arasaki, Mitsunari Suzuki
  • Patent number: 10804029
    Abstract: Disclosed herein is a rotary type magnetic coupling device used for a rotator. The rotary type magnetic coupling device includes first and second coils magnetically coupled to each other, and third and fourth coils magnetically coupled to each other. The coil axes of the first and second coils extend in a rotary axis direction of the rotator, and the coil axes of the third and fourth coils radially extend in a radial direction substantially orthogonal to the rotary axis of the rotator.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: October 13, 2020
    Assignee: TDK CORPORATION
    Inventors: Kazuyoshi Hanabusa, Takashi Urano
  • Publication number: 20200316712
    Abstract: In a method of processing a substrate, in a second step, only some of a plurality of altered portions are exposed from an opening portion of a mask, and the remaining portions are not exposed. In this case, at the time of etching in a third step, an etching rate may be made different between the altered portions exposed from the opening portion of the mask and the altered portions which are not exposed. Accordingly, it becomes easier to obtain a desired processed shape by adjusting the altered portions exposed from the opening portion of the mask and the altered portions which are not exposed.
    Type: Application
    Filed: March 17, 2020
    Publication date: October 8, 2020
    Applicant: TDK Corporation
    Inventor: Akifumi KAMIJIMA
  • Publication number: 20200317567
    Abstract: A substrate includes a fabric-like member. First inorganic fillers exist on a surface of the fabric-like member.
    Type: Application
    Filed: March 31, 2020
    Publication date: October 8, 2020
    Applicant: TDK CORPORATION
    Inventors: Yasuhide YAMASHITA, Masaaki YAMASHITA
  • Publication number: 20200321518
    Abstract: A ferromagnetic laminated film includes a plurality of first magnetic layers, at least one second magnetic layer, and at least one first non-magnetic layer, in which the first magnetic layers are alternately laminated with the second magnetic layer or the first non-magnetic layer, and a material forming the first magnetic layers is different from a material forming the second magnetic layer, and the first magnetic layers, the first non-magnetic layer, and the second magnetic layer are a material combination in which interface magnetic anisotropy is generated between the first magnetic layer and the first non-magnetic layer, and a material combination in which interface magnetic anisotropy is generated between the first magnetic layer and the second magnetic layer.
    Type: Application
    Filed: February 26, 2019
    Publication date: October 8, 2020
    Applicant: TDK CORPORATION
    Inventors: Yohei SHIOKAWA, Tomoyuki SASAKI
  • Publication number: 20200321499
    Abstract: A bonding structure is a bonding structure which bonds a light emitting element and a substrate and includes a first electrode formed on the light emitting element, a second electrode formed on the substrate, and a bonding layer which bonds the first electrode and the second electrode, and the bonding layer contains a first bonding metal component and a second bonding metal component different from the first bonding metal component.
    Type: Application
    Filed: February 19, 2020
    Publication date: October 8, 2020
    Applicant: TDK CORPORATION
    Inventors: Takasi SATOU, Susumu TANIGUCHI, Hideyuki KOBAYASHI, Makoto ORIKASA
  • Publication number: 20200321513
    Abstract: In a piezoelectric element, shift of a resonance point to a low-pitched sound side is achieved. A resonance point of a piezoelectric element moves to a low-pitched sound side when an active region is configured to be surrounded by an inactive region as in the configuration of the piezoelectric element. According to the piezoelectric element whose resonance point is moved to a low-pitched sound side, the piezoelectric element can realize a sound pressure that is sufficiently high for practical use when it is applied to an acoustic device.
    Type: Application
    Filed: December 12, 2018
    Publication date: October 8, 2020
    Applicant: TDK CORPORATION
    Inventors: Yoshikazu SHIMURA, Kaoru KIJIMA, Hideya SAKAMOTO, Kazushi TACHIMOTO, Ryuhei SASAKI, Yoshiki OHTA, Akihiro TAKEDA
  • Publication number: 20200319264
    Abstract: Provided is a magnetic field detection device that includes a first soft magnetic body and a magnetic detector. The first soft magnetic body includes a first plate and a first protrusion. The first plate includes a first surface including a first outer edge. The first protrusion is provided at a first arrangement position in the first surface and includes a first tip on opposite side to the first surface. The first arrangement position is set back from the first outer edge. The magnetic detector is provided in the vicinity of the first tip.
    Type: Application
    Filed: June 23, 2020
    Publication date: October 8, 2020
    Applicant: TDK CORPORATION
    Inventors: Masaki NAGATA, Kazuya WATANABE, Keisuke UCHIDA, Kohei HONMA, Hiraku HIRABAYASHI
  • Publication number: 20200321151
    Abstract: An R-T-B based sintered magnet containing a first heavy rare earth element, in which R includes Nd, T includes Co and Fe, the first heavy rare earth element includes Tb or Dy, the R-T-B based sintered magnet has a region in which a concentration of the first heavy rare earth element decreases from the surface toward the inside, a first grain boundary phase which contains the first heavy rare earth element and Nd but does not contain Co is present in one cross section including the region, and an area occupied by the first grain boundary phase in one cross section including the region is 1.8% or less.
    Type: Application
    Filed: June 23, 2020
    Publication date: October 8, 2020
    Applicant: TDK Corporation
    Inventors: Ayato Kakoki, Makoto Iwasaki, Tetsuya Hidaka, Takuma Hayakawa
  • Patent number: 10797003
    Abstract: A circuit module 2 comprises: a wiring structure 4; an electronic component 6a, 6b arranged on the upper surface of the wiring structure 4; an insulating resin layer 8 which is provided on the upper surface of the wiring structure 4 and in which the electronic component 6a, 6b is embedded; and a metal layer 10 provided on a side surface S1 of the insulating resin layer 8 and a side surface S2 of the wiring structure 4. The surface roughness of the side surface S1 of the insulating resin layer 8 is expressed as R1. The surface roughness of the side surface S2 of the wiring structure 4 is expressed as R2. R1 and R2 differ from each other.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: October 6, 2020
    Assignee: TDK CORPORATION
    Inventors: Shuichi Takizawa, Hironori Sato, Atsushi Yoshino
  • Patent number: 10796844
    Abstract: A multilayer electronic component includes: a multilayer stack including a plurality of dielectric layers and a plurality of conductor layers stacked together; a plurality of terminals integrated with the multilayer stack; and a shield formed of a conductor and integrated with the multilayer stack. The multilayer stack has a top surface, a bottom surface, and four side surfaces connecting the top surface and the bottom surface. The plurality of terminals are provided on the bottom surface of the multilayer stack. The shield entirely covers the top surface and the four side surfaces of the multilayer stack. The shield includes a portion that is thicker than the other portions of the shield.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: October 6, 2020
    Assignee: TDK CORPORATION
    Inventors: Shohei Kusumoto, Noriaki Ootsuka, Minoru Abe, Yoshinori Sato
  • Patent number: 10796854
    Abstract: An electronic device includes a chip component and a metal terminal. The chip component includes a terminal electrode formed on an element body. The metal terminal is connectable with the terminal electrode of the chip component. The metal terminal includes a terminal body and a pair of holding pieces. The terminal body faces an end surface of the terminal electrode of the chip component. The holding pieces are formed on the terminal body. A connection member configured to connect the terminal body and the end surface of the terminal body exists in a joint region between the terminal body and the end surface of the terminal electrode. A pair of reinforcement pieces is formed on the terminal body so as not to overlap with the joint region in a direction extending from one to the other of the pair of holding pieces.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: October 6, 2020
    Assignee: TDK CORPORATION
    Inventors: Norihisa Ando, Sunao Masuda, Masahiro Mori, Kayou Matsunaga, Kosuke Yazawa