Patents Assigned to TDK Corporation
  • Publication number: 20260267084
    Abstract: The laser module comprises a plurality of subcarriers 20, a plurality of laser elements 30 installed on the respective main surfaces of the plurality of subcarriers 20, and an optical waveguide substrate 40 having an optical waveguide layer 50 on its main surface, the optical waveguide layer 50 having an optical waveguide 51 for guiding the laser light respectively emitted from the plurality of laser elements 30. The emission surface 50C of the optical waveguide layer 50 is inclined obliquely with respect to a plane perpendicular to the extension direction of the optical waveguide 51 at the emission surface 50C.
    Type: Application
    Filed: March 5, 2026
    Publication date: September 10, 2026
    Applicant: TDK Corporation
    Inventor: Yusuke SHIGETA
  • Publication number: 20260269119
    Abstract: A multilayer coil component includes an element body, and a first coil and a second coil disposed inside the element body and provided coaxially. The first coil includes a first coil conductor, a second coil conductor, and a third coil conductor. The element body includes a first insulating layer interposed between the first coil conductor and the second coil conductor, and a second insulating layer interposed between the second coil conductor and the third coil conductor. The first coil conductor, the second coil conductor, the third coil conductor, and the second coil are disposed in this order along an axial direction of the first coil. A thickness of the second insulating layer is smaller than a thickness of the first insulating layer.
    Type: Application
    Filed: March 4, 2026
    Publication date: September 10, 2026
    Applicant: TDK Corporation
    Inventors: Yusuke NAGAI, Kazuhiro EBINA, Takahiro SATO, Makoto YOSHINO, Takuya MIYASHITA, Shin TSUKAMOTO, Takumi ITO, Shota KAIGUCHI
  • Publication number: 20260269225
    Abstract: A lithium secondary battery according to an embodiment is a lithium secondary battery including a negative electrode and a positive electrode, in which the negative electrode has: in the following order, a current collector layer; a first lithium metal layer made of a lithium metal foil; a second lithium metal layer including granular lithium metal; and a third lithium metal layer including lithium metal and being porous, the granular lithium metal having an average particle diameter larger than an average pore diameter of the third lithium metal layer.
    Type: Application
    Filed: March 1, 2024
    Publication date: September 10, 2026
    Applicant: TDK Corporation
    Inventors: Ryousuke TANIKI, Hirofumi KAKUTA
  • Publication number: 20260269800
    Abstract: An electronic component includes: a substrate; and an element body disposed on the substrate and including a pair of main surfaces facing each other and four side surfaces connecting the pair of main surfaces, in which the element body includes a plurality of conductor layers and insulating layers, the plurality of conductor layers include a first conductor layer disposed on the substrate and a second conductor layer disposed on the first conductor layer, the first conductor layer includes a first conductor pattern, the second conductor layer includes a second conductor pattern, the first conductor pattern is covered with an adhesion layer, and there is a region in which a distance from one side surface to the adhesion layer is equal to or less than a thickness of the second conductor pattern.
    Type: Application
    Filed: March 5, 2026
    Publication date: September 10, 2026
    Applicant: TDK Corporation
    Inventors: Yu FUKAE, Atsuhiro TSUYOSHI, Takashi OHTSUKA, Yoshinori UCHIYAMA, Takeshi OOHASHI, Yusuke TAKIGUCHI
  • Publication number: 20260266928
    Abstract: A magnetic sensor includes an insulating layer, a coil element disposed on the insulating layer, and a first insulating film. The insulating layer includes a first inclined surface and a second inclined surface. The coil element includes a first side surface and a second side surface. The first side surface includes a first portion and a second portion, the second portion being disposed at a position farther from a top surface of a substrate than a position where the first portion is disposed. The first portion is inclined so as to intersect with the first and second inclined surfaces, and is also inclined so as to be closer to the second side surface at positions closer to the top surface of the substrate. The first insulating film covers the first portion.
    Type: Application
    Filed: April 27, 2026
    Publication date: September 10, 2026
    Applicant: TDK CORPORATION
    Inventors: Keita KAWAMORI, Hiraku HIRABAYASHI, Hiromichi UMEHARA
  • Publication number: 20260269137
    Abstract: An electronic component includes a substrate, and an element body disposed on the substrate, in which the element body is configured to include a plurality of conductor layers and insulating layers, the plurality of conductor layers include a first conductor layer disposed on the substrate and a second conductor layer disposed on the first conductor layer, the first conductor layer includes a plurality of first conductor patterns, the second conductor layer includes a second conductor pattern, the first conductor pattern and the second conductor pattern are electrically connected by a first connection conductor, a first protruding portion is provided in the second conductor pattern, and the first protruding portion of the second conductor pattern is disposed in the insulating layer positioned between two adjacent first conductor patterns.
    Type: Application
    Filed: March 5, 2026
    Publication date: September 10, 2026
    Applicant: TDK Corporation
    Inventors: Atsuhiro TSUYOSHI, Yu FUKAE, Takashi OHTSUKA, Yoshinori UCHIYAMA, Takeshi OOHASHI, Yusuke TAKIGUCHI
  • Publication number: 20260269561
    Abstract: The laser module comprises a plurality of subcarriers 20, a plurality of laser elements 30 mounted on the main surfaces of the plurality of subcarriers 20, an optical waveguide substrate 40 having an optical waveguide layer 50 on its main surface, which has an optical waveguide 51 for guiding laser light respectively emitted from the plurality of laser elements 30, a heat sink 60 having comb-shaped fin portion that contact both side surfaces of the plurality of subcarriers 20, and a package 110 that houses the plurality of subcarriers 20 on which the plurality of laser elements 30 are mounted, the optical waveguide substrate 40 on which the optical waveguide layer 50 is mounted, and the heat sink 60. The plurality of subcarriers 20 are thermally coupled to the package 110 via the heat sink 60.
    Type: Application
    Filed: March 5, 2026
    Publication date: September 10, 2026
    Applicant: TDK Corporation
    Inventor: Yusuke SHIGETA
  • Publication number: 20260267089
    Abstract: This light source module includes a subcarrier, a plurality of laser light sources installed on an upper surface of the subcarrier, a heat dissipation member arranged near a lower surface of the subcarrier, an optical member substrate, and an optical waveguide arranged on a surface side of the optical member substrate. The subcarrier and the optical member substrate are arranged such that light output from the laser light sources is input to the optical waveguide, and are integrally coupled with a metal layer therebetween. The heat dissipation member and the optical member substrate are integrally coupled.
    Type: Application
    Filed: February 13, 2026
    Publication date: September 10, 2026
    Applicant: TDK Corporation
    Inventors: Takashi HONDA, Taku SOMEYA, Ryohei FUKUZAKI, Tsuyoshi KOMAKI
  • Publication number: 20260269118
    Abstract: A multilayer coil component includes an element body, and a first coil and a second coil disposed inside the element body and provided coaxially. The first coil includes a first coil conductor, a second coil conductor, and a third coil conductor. The element body includes a first insulating layer interposed between the first coil conductor and the second coil conductor, and a second insulating layer interposed between the second coil conductor and the third coil conductor. The first coil conductor, the second coil conductor, the third coil conductor, and the second coil are disposed in this order along an axial direction of the first coil. A thickness of the second insulating layer is greater than a thickness of the first insulating layer.
    Type: Application
    Filed: March 3, 2026
    Publication date: September 10, 2026
    Applicant: TDK Corporation
    Inventors: Yusuke NAGAI, Kazuhiro EBINA, Takahiro SATO, Makoto YOSHINO, Takuya MIYASHITA, Shin TSUKAMOTO, Takumi ITO, Shota KAIGUCHI
  • Publication number: 20260269305
    Abstract: This solid electrolyte battery includes: a positive electrode; a negative electrode; and a solid electrolyte layer sandwiched between the positive electrode and the negative electrode. The solid electrolyte layer contains a solid electrolyte containing Li, Zr, SOx, and one or more halogens. A first region of the solid electrolyte layer which is in contact with the negative electrode contains P. The solid electrolyte layer has a molar ratio of SOx to Zr of 0.25 to 3.0, a molar ratio of P to Zr of 0.02 to 0.6, and a molar ratio of the halogens to Zr of 3.0 to 6.1.
    Type: Application
    Filed: March 15, 2024
    Publication date: September 10, 2026
    Applicant: TDK Corporation
    Inventors: Youhei NODA, Masato KURIHARA
  • Patent number: 12731020
    Abstract: A control device of an array including neuromorphic elements that multiply a signal by a weight corresponding to a value of a variable characteristic is provided with a control unit which calculates update amounts of element conductances in a neuromorphic array on the basis of weight update amounts from a learning algorithm, and, after applying a write signal for changing conductances in the neuromorphic array, selects certain elements with reference to a predetermined threshold value and applies an additional write signal.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: September 8, 2026
    Assignee: TDK CORPORATION
    Inventor: Yukio Terasaki
  • Patent number: 12731719
    Abstract: An electronic component has an element body; and an external electrode having a main body portion covering at least the second surface and a first wrapping-around portion wrapping around the third surface in the element body. The wrapping-around portion of the external electrode has a first part having a first distance, a second part having a second distance, a third part having a third distance, a fourth part having a fourth distance, and a fifth part having a fifth distance in the second direction in order from one side to the other side in the first direction. The second distance is longer than the first distance and the third distance. The fourth distance is longer than the third distance and the fifth distance.
    Type: Grant
    Filed: March 23, 2023
    Date of Patent: September 8, 2026
    Assignee: TDK CORPORATION
    Inventors: Masashi Shimoyasu, Yoji Tozawa, Akihiko Oide, Daiki Kato, Midori Kishimoto, Satoshi Takasu, Yo Saito, Rui Takahashi, Kenta Sasaki, Makoto Yoshino, Kazuhiro Ebina
  • Patent number: 12731714
    Abstract: A coil device including a first conductor, a second conductor located inside the first conductor, a first inner core located inside the second conductor, and a second inner core located between the first conductor and the second conductor.
    Type: Grant
    Filed: October 20, 2022
    Date of Patent: September 8, 2026
    Assignee: TDK CORPORATION
    Inventors: Riku Umeki, Kiyofumi Fujiwara, Koki Murata, Youli Yao
  • Patent number: 12731726
    Abstract: A coil component improving insulation between external terminals provided on the same surface of an element body is provided. In the coil component, when a voltage is applied via the external terminal electrode, for example, a potential difference may occur between the outer end portions. In the coil component, since the insulation between the outer end portions is enhanced by the upper insulator exposed on the end face of the element body, even when a potential difference occurs between the outer end portions, a situation in which the outer end portions are short-circuited on the end face is prevented.
    Type: Grant
    Filed: June 1, 2022
    Date of Patent: September 8, 2026
    Assignee: TDK CORPORATION
    Inventors: Hokuto Eda, Hitoshi Ohkubo, Masazumi Arata, Masataro Saito, Kohei Takahashi, Takamasa Iwasaki
  • Patent number: 12730023
    Abstract: A distortion resistance film is capable of reducing a property change accompanying a composition change and a pressure sensor uses the distortion resistance film. The distortion resistance film is represented by a formula Cr100-x-yAlxNy, in which composition regions of x and y satisfy 25<x?50 and 0.1<y?20, respectively.
    Type: Grant
    Filed: March 17, 2022
    Date of Patent: September 8, 2026
    Assignee: TDK CORPORATION
    Inventors: Kohei Nawaoka, Ken Unno, Tetsuya Sasahara, Masanori Kobayashi
  • Patent number: 12731705
    Abstract: A transient voltage protection device includes an element body formed with a cavity inside, a pair of internal electrodes, and a discharge assistance portion. The pair of internal electrodes are disposed in the element body and include edges. The edges include parts opposing each other in a first direction in the cavity. The discharge assistance portion is in contact with the parts of the edges. Each of the edges includes a first end exposed on an outer surface of the element body and a second end located opposite the first end and including a corner. The discharge assistance portion includes a pair of edges opposing each other in a second direction intersecting with the first direction and exposed to the cavity. The part included in each of the edges does not include the corner.
    Type: Grant
    Filed: August 25, 2023
    Date of Patent: September 8, 2026
    Assignee: TDK CORPORATION
    Inventors: Shunsuke Takahashi, Masato Hayatsu, Sota Hiraba, Naoyoshi Yoshida
  • Publication number: 20260260813
    Abstract: An electronic component includes an element body including a side surface, an internal conductor disposed in the element body, and an external conductor disposed on the side surface and connected to the internal conductor. The external conductor includes a base electrode layer, a first plating layer located on the base electrode layer and including Cu, a second plating layer located on the first plating layer and including any one metal selected from the group consisting of Sn, In, Zn, Au, Ag, Cr, Mn, Fe, and Co, and a third plating layer located on the second plating layer and including Ni.
    Type: Application
    Filed: February 23, 2026
    Publication date: September 3, 2026
    Applicant: TDK Corporation
    Inventors: Toshio SAKURAI, Masahide ISHIZUYA, Makoto ISHIZAKI, Asuka MURAKAMI
  • Publication number: 20260260814
    Abstract: An electronic component includes an element body including a side surface, an internal conductor disposed in the element body, and an external conductor disposed on the side surface and connected to the internal conductor. The external conductor includes a base electrode layer, a metal plating layer located on the base electrode layer, and a plating layer that is located on the metal plating layer and includes Ni. The metal plating layer has a thickness of 5 ?m or more. The metal plating layer includes any one metal selected from the group consisting of Sn, In, Zn, Au, Ag, Cu, Cr, Mn, Fe, and Co, or includes an Sn-M alloy, M being any one metal selected from the group consisting of Cu, Ag, Bi, Zn, and Co.
    Type: Application
    Filed: February 23, 2026
    Publication date: September 3, 2026
    Applicant: TDK Corporation
    Inventors: Toshio SAKURAI, Masahide ISHIZUYA, Makoto ISHIZAKI, Asuka MURAKAMI
  • Publication number: 20260262158
    Abstract: A substrate structure includes a substrate, a pair of conductor patterns formed on the main surface of the substrate and arranged spaced apart from each other, and a resist layer covering the main surface of the substrate. In at least part of a region between the pair of conductor patterns, a coating layer having higher adhesiveness than the resist layer covers the substrate with the coating layer being in contact with the substrate.
    Type: Application
    Filed: November 1, 2023
    Publication date: September 3, 2026
    Applicant: TDK CORPORATION
    Inventors: Norikazu SHIMIZU, Masahide OHNISHI
  • Publication number: 20260261099
    Abstract: An optical element assembly includes a plurality of laser diode assemblies and an optical waveguide substrate having a main surface on which an optical waveguide layer having an optical waveguide for guiding laser light output from the plurality of laser diode assemblies is provided. Each of the laser diode assemblies includes a base plate and a laser diode formed on the base plate. At least one of the plurality of laser diode assemblies is provided at a spacing from an adjacent laser diode assembly so that a mounting pitch satisfies formula (1), P?W+0.9T . . . (1). (P denotes a mounting pitch, W denotes a width of the base plate, and T denotes a thickness of the base plate).
    Type: Application
    Filed: February 18, 2026
    Publication date: September 3, 2026
    Applicant: TDK Corporation
    Inventors: Takashi HONDA, Ryohei FUKUZAKI, Tsuyoshi KOMAKI