Patents Assigned to TDK Corporation
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Publication number: 20260267084Abstract: 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: ApplicationFiled: March 5, 2026Publication date: September 10, 2026Applicant: TDK CorporationInventor: Yusuke SHIGETA
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Publication number: 20260269119Abstract: 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: ApplicationFiled: March 4, 2026Publication date: September 10, 2026Applicant: TDK CorporationInventors: Yusuke NAGAI, Kazuhiro EBINA, Takahiro SATO, Makoto YOSHINO, Takuya MIYASHITA, Shin TSUKAMOTO, Takumi ITO, Shota KAIGUCHI
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Publication number: 20260269225Abstract: 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: ApplicationFiled: March 1, 2024Publication date: September 10, 2026Applicant: TDK CorporationInventors: Ryousuke TANIKI, Hirofumi KAKUTA
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Publication number: 20260269800Abstract: 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: ApplicationFiled: March 5, 2026Publication date: September 10, 2026Applicant: TDK CorporationInventors: Yu FUKAE, Atsuhiro TSUYOSHI, Takashi OHTSUKA, Yoshinori UCHIYAMA, Takeshi OOHASHI, Yusuke TAKIGUCHI
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Publication number: 20260266928Abstract: 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: ApplicationFiled: April 27, 2026Publication date: September 10, 2026Applicant: TDK CORPORATIONInventors: Keita KAWAMORI, Hiraku HIRABAYASHI, Hiromichi UMEHARA
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Publication number: 20260269137Abstract: 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: ApplicationFiled: March 5, 2026Publication date: September 10, 2026Applicant: TDK CorporationInventors: Atsuhiro TSUYOSHI, Yu FUKAE, Takashi OHTSUKA, Yoshinori UCHIYAMA, Takeshi OOHASHI, Yusuke TAKIGUCHI
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Publication number: 20260269561Abstract: 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: ApplicationFiled: March 5, 2026Publication date: September 10, 2026Applicant: TDK CorporationInventor: Yusuke SHIGETA
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Publication number: 20260267089Abstract: 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: ApplicationFiled: February 13, 2026Publication date: September 10, 2026Applicant: TDK CorporationInventors: Takashi HONDA, Taku SOMEYA, Ryohei FUKUZAKI, Tsuyoshi KOMAKI
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Publication number: 20260269118Abstract: 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: ApplicationFiled: March 3, 2026Publication date: September 10, 2026Applicant: TDK CorporationInventors: Yusuke NAGAI, Kazuhiro EBINA, Takahiro SATO, Makoto YOSHINO, Takuya MIYASHITA, Shin TSUKAMOTO, Takumi ITO, Shota KAIGUCHI
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Publication number: 20260269305Abstract: 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: ApplicationFiled: March 15, 2024Publication date: September 10, 2026Applicant: TDK CorporationInventors: Youhei NODA, Masato KURIHARA
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Patent number: 12731020Abstract: 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: GrantFiled: December 20, 2018Date of Patent: September 8, 2026Assignee: TDK CORPORATIONInventor: Yukio Terasaki
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Patent number: 12731719Abstract: 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: GrantFiled: March 23, 2023Date of Patent: September 8, 2026Assignee: TDK CORPORATIONInventors: Masashi Shimoyasu, Yoji Tozawa, Akihiko Oide, Daiki Kato, Midori Kishimoto, Satoshi Takasu, Yo Saito, Rui Takahashi, Kenta Sasaki, Makoto Yoshino, Kazuhiro Ebina
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Patent number: 12731714Abstract: 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: GrantFiled: October 20, 2022Date of Patent: September 8, 2026Assignee: TDK CORPORATIONInventors: Riku Umeki, Kiyofumi Fujiwara, Koki Murata, Youli Yao
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Patent number: 12731726Abstract: 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: GrantFiled: June 1, 2022Date of Patent: September 8, 2026Assignee: TDK CORPORATIONInventors: Hokuto Eda, Hitoshi Ohkubo, Masazumi Arata, Masataro Saito, Kohei Takahashi, Takamasa Iwasaki
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Patent number: 12730023Abstract: 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: GrantFiled: March 17, 2022Date of Patent: September 8, 2026Assignee: TDK CORPORATIONInventors: Kohei Nawaoka, Ken Unno, Tetsuya Sasahara, Masanori Kobayashi
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Patent number: 12731705Abstract: 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: GrantFiled: August 25, 2023Date of Patent: September 8, 2026Assignee: TDK CORPORATIONInventors: Shunsuke Takahashi, Masato Hayatsu, Sota Hiraba, Naoyoshi Yoshida
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Publication number: 20260260813Abstract: 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: ApplicationFiled: February 23, 2026Publication date: September 3, 2026Applicant: TDK CorporationInventors: Toshio SAKURAI, Masahide ISHIZUYA, Makoto ISHIZAKI, Asuka MURAKAMI
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Publication number: 20260260814Abstract: 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: ApplicationFiled: February 23, 2026Publication date: September 3, 2026Applicant: TDK CorporationInventors: Toshio SAKURAI, Masahide ISHIZUYA, Makoto ISHIZAKI, Asuka MURAKAMI
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Publication number: 20260262158Abstract: 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: ApplicationFiled: November 1, 2023Publication date: September 3, 2026Applicant: TDK CORPORATIONInventors: Norikazu SHIMIZU, Masahide OHNISHI
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Publication number: 20260261099Abstract: 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: ApplicationFiled: February 18, 2026Publication date: September 3, 2026Applicant: TDK CorporationInventors: Takashi HONDA, Ryohei FUKUZAKI, Tsuyoshi KOMAKI