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1.发明授权公开(公告)号：US12218161B2
公开(公告)日：2025-02-04
申请号：US17559135
申请日：2021-12-22
Applicant: TDK CORPORATION
Inventor： Hideaki Fukuzawa , Dai Matsuoka , Tomohito Mizuno , Tetsuya Shibata
IPC: H01L27/146 , H10B61/00 , H10N50/10 , H10N50/80 , G11C11/16
Abstract: An optical sensor includes a wavelength filter configured to transmit light in a specific wavelength range and a magnetic element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer. The light passing through the wavelength filter is applied to the magnetic element and the light applied to the magnetic element is detected.
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公开(公告)号：US12124096B2
公开(公告)日：2024-10-22
申请号：US18411575
申请日：2024-01-12
Applicant: TDK CORPORATION
Inventor： Tetsuya Shibata , Hideaki Fukuzawa , Tomohito Mizuno , Masahiro Shinkai
CPC classification number: G02B6/4296 , G02B6/4274 , G02B6/43
Abstract: This optical device includes at least one magnetic element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, a laser diode, and a waveguide, in which the waveguide includes at least one input waveguide optically connected to the laser diode and an output waveguide connected to the input waveguide, and at least some of light propagating in at least one of the input waveguide and the output waveguide is applied to the magnetic element.
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公开(公告)号：US11869989B2
公开(公告)日：2024-01-09
申请号：US17509730
申请日：2021-10-25
Applicant: TDK CORPORATION
Inventor： Tomohito Mizuno , Takekazu Yamane , Hideaki Fukuzawa , Tetsuya Shibata
IPC: H01L31/0224 , H01L27/146 , H04B10/114 , H04B10/69 , H04B10/50
CPC classification number: H01L31/022466 , H01L27/14643 , H04B10/1143 , H04B10/501 , H04B10/691
Abstract: An electrode structure includes: a metal film with an opening formed in a part of the metal film; and a transparent conductive film disposed in the opening, wherein the transparent conductive film is electronically connected to an element and overlaps with the element as viewed in a plan view in a thickness direction of the transparent conductive film.
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公开(公告)号：US11722222B2
公开(公告)日：2023-08-08
申请号：US17507143
申请日：2021-10-21
Applicant: TDK CORPORATION
Inventor： Hideaki Fukuzawa , Tomohito Mizuno , Tetsuya Shibata , Takashi Kikukawa
IPC: H04B10/40 , H04B10/50 , H04B10/532
CPC classification number: H04B10/503 , H04B10/40 , H04B10/532
Abstract: A transceiver device includes: a receiving device including a magnetic 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, wherein the receiving device is configured to receive an optical signal; a transmission device including a modulated light output element, wherein the transmission device is configured to transmit an optical signal; and a circuit chip including an integrated circuit electrically connected to the magnetic element and the modulated light output element.
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公开(公告)号：US12272476B2
公开(公告)日：2025-04-08
申请号：US17508570
申请日：2021-10-22
Applicant: TDK CORPORATION
Inventor： Tomohito Mizuno , Hideaki Fukuzawa , Tetsuya Shibata
Abstract: A photodetection element includes: a first ferromagnetic layer configured to be irradiated with light; a second ferromagnetic layer; and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, wherein the first ferromagnetic layer includes a first region in contact with the spacer layer and a second region disposed in a position farther from the space layer than the first region, the first region is made of CoFeB alloy, and the second region is a magnetic material containing Fe and Gd as major constituent elements.
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Patent Agency Ranking
公开(公告)号：US12218266B2
公开(公告)日：2025-02-04
申请号：US17576467
申请日：2022-01-14
Applicant: TDK CORPORATION
Inventor： Takekazu Yamane , Tomohito Mizuno
Abstract: A photodetection element includes a magnetic element including a first ferromagnetic layer to which light is applied, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer; a first electrode in contact with a first surface of the magnetic element, the first surface being located on a first ferromagnetic layer side of the magnetic element in a lamination direction; a second electrode in contact with a second surface of the magnetic element, the second surface being opposite to the first surface; and a first high thermal conductivity layer disposed outside of the first ferromagnetic layer and having higher thermal conductivity than the first electrode.
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公开(公告)号：US12152934B2
公开(公告)日：2024-11-26
申请号：US18190336
申请日：2023-03-27
Applicant: TDK CORPORATION
Inventor： Takekazu Yamane , Tetsuya Shibata , Tomohito Mizuno , Hideaki Fukuzawa
IPC: G01J1/42
Abstract: An optical device includes a magnetic element and a light application part, wherein the light application part configured to apply light to the magnetic element, the magnetic element includes a first ferromagnetic layer to which the light is applied, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, and magnetization of the first ferromagnetic layer is inclined with respect to both an in-plane direction in which the first ferromagnetic layer extends and a surface-perpendicular direction perpendicular to a surface on which the first ferromagnetic layer extends in a state in which the light is not applied from the light application part to the magnetic element.
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公开(公告)号：US12085721B2
公开(公告)日：2024-09-10
申请号：US18373007
申请日：2023-09-26
Applicant: TDK CORPORATION
Inventor： Hideaki Fukuzawa , Tomohito Mizuno , Tetsuya Shibata , Tsuyoshi Komaki
CPC classification number: G02B27/0172 , G02B6/12004 , G02B6/12007 , G02B6/125 , G02B27/0093 , H10N50/10 , G02B2006/12104 , G02B2027/0178
Abstract: This optical waveguide detection element includes a substrate, an optical waveguide layer formed on the substrate, and a photodetector. The optical waveguide layer includes a first optical waveguide in which visible light having a wavelength of 380 nm to 800 nm propagates, a second optical waveguide in which near-infrared light having a wavelength of 801 nm to 2000 nm propagates, and a third optical waveguide in which light propagates to a light receiving surface of the photodetector. A visible light output port of the first optical waveguide from which the visible light is output, a near-infrared light output port of the second optical waveguide from which the near-infrared light is output, and a reflected light input port of the third optical waveguide to which the near-infrared light is reflected and returned are arranged on one end surface of the optical waveguide layer.
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公开(公告)号：US12298178B2
公开(公告)日：2025-05-13
申请号：US18328817
申请日：2023-06-05
Applicant: TDK CORPORATION
Inventor： Hideaki Fukuzawa , Tomohito Mizuno , Tetsuya Shibata
Abstract: A receiving device includes a magnetic 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, wherein the first ferromagnetic layer is configured to be irradiated with light containing an optical signal with a change of intensity of the light, and wherein the receiving device is configured to receive the optical signal on a basis of an output voltage from the magnetic element.
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公开(公告)号：US11953742B2
公开(公告)日：2024-04-09
申请号：US17693558
申请日：2022-03-14
Applicant: TDK CORPORATION
Inventor： Tetsuya Shibata , Hideaki Fukuzawa , Tomohito Mizuno , Masahiro Shinkai
CPC classification number: G02B6/4296 , G02B6/4274 , G02B6/43
Abstract: This optical device includes at least one magnetic element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, a laser diode, and a waveguide, in which the waveguide includes at least one input waveguide optically connected to the laser diode and an output waveguide connected to the input waveguide, and at least some of light propagating in at least one of the input waveguide and the output waveguide is applied to the magnetic element.
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