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公开(公告)号:US20240332323A1
公开(公告)日:2024-10-03
申请号:US18610629
申请日:2024-03-20
Applicant: TDK Corporation
Inventor: Takekazu YAMANE , Tetsuya SHIBATA , Takeshi NOJIRI , Weihao ZHANG , Hideaki FUKUZAWA
IPC: H01L27/144 , H01L31/02 , H01L31/032
CPC classification number: H01L27/1443 , H01L31/02005 , H01L31/032
Abstract: An optical detection device includes first photoelectric conversion element that outputs first output when first photoelectric conversion element is irradiated with light pulse, and second photoelectric conversion element that outputs second output when second photoelectric conversion element is irradiated with light pulse. The optical detection device is configured to combine first signal caused by first output and second signal caused by second output when first photoelectric conversion element and second photoelectric conversion element are irradiated with same light pulse each other, in a state where first condition and second condition are satisfied. The first condition is condition that time position of peak of first signal is different from time position of peak of second signal. The second condition is condition that sign of amount of change until the first signal reaches the peak is different from a sign of the amount of change until the second signal reaches the peak.
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公开(公告)号:US20230194913A1
公开(公告)日:2023-06-22
申请号:US18073077
申请日:2022-12-01
Applicant: TDK CORPORATION
Inventor: Tomohito MIZUNO , Hideaki FUKUZAWA , Tetsuya SHIBATA
IPC: G02F1/09 , H01L31/0232
CPC classification number: G02F1/09 , H01L31/02327
Abstract: The light detection element includes a light-sensitive layer configured to generate a voltage when light is applied, a first electrode, and a second electrode. The light-sensitive layer is located between the first electrode and the second electrode. The second electrode is a metal containing at least one element selected from the group consisting of ruthenium, molybdenum, and tungsten.
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公开(公告)号:US20230097100A1
公开(公告)日:2023-03-30
申请号:US17939472
申请日:2022-09-07
Applicant: TDK CORPORATION
Inventor: Tetsuya SHIBATA , Hideaki FUKUZAWA , Tomohito MIZUNO , Masahiro SHINKAI
IPC: H01S5/00 , H01S5/02325 , H01S5/22 , H01S5/02212 , H01S5/343 , G01J1/42
Abstract: The optical device includes 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, and a laser diode. At least a part of light emitted from the laser diode is applied to the magnetic element.
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公开(公告)号:US20220208820A1
公开(公告)日:2022-06-30
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 , H01L43/02 , H01L43/08 , H01L27/22
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:US20220131612A1
公开(公告)日:2022-04-28
申请号:US17507143
申请日:2021-10-21
Applicant: TDK CORPORATION
Inventor: Hideaki FUKUZAWA , Tomohito MIZUNO , Tetsuya SHIBATA , Takashi KIKUKAWA
IPC: H04B10/50 , 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:US20250133851A1
公开(公告)日:2025-04-24
申请号:US19005156
申请日:2024-12-30
Applicant: TDK CORPORATION
Inventor: Hideaki FUKUZAWA , Dai MATSUOKA , Tomohito MIZUNO , Tetsuya SHIBATA
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:US20250102705A1
公开(公告)日:2025-03-27
申请号:US18891263
申请日:2024-09-20
Applicant: TDK Corporation
Inventor: Tomohito MIZUNO , Hideaki FUKUZAWA , Tetsuya SHIBATA , Tsuyoshi KOMAKI , Takeshi NOJIRI
Abstract: A metasurface reflector includes: a first metal layer and a second metal layer stacked in a first direction; a dielectric layer provided between the first metal layer and the second metal layer in the first direction; and a protective layer covering a surface of the second metal layer opposite to the dielectric layer. The dielectric layer includes a main surface on which the second metal layer is provided. The metasurface reflector is divided into a plurality of unit regions arranged in a second direction along the main surface and in a third direction along the main surface and intersecting the second direction. The second metal layer includes metal units respectively provided in all or some of the plurality of unit regions. The protective layer is made of a metal having a standard electrode potential higher than that of a metal constituting the second metal layer.
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公开(公告)号:US20220416096A1
公开(公告)日:2022-12-29
申请号:US17845050
申请日:2022-06-21
Applicant: TDK CORPORATION
Inventor: Takekazu YAMANE , Hideaki FUKUZAWA , Tetsuya SHIBATA , Tomohito MIZUNO
IPC: H01L31/0232 , G01R33/09 , H01F10/32
Abstract: A light detection element includes: a plurality of magnetic elements, wherein each of the magnetic elements includes a first ferromagnetic layer that is irradiated with light and a second ferromagnetic layer and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, and wherein at least two of the magnetic elements are arranged to be inside a spot of the light applied to the first ferromagnetic layers of the at least two of the magnetic elements.
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公开(公告)号:US20220317484A1
公开(公告)日:2022-10-06
申请号:US17694917
申请日:2022-03-15
Applicant: TDK CORPORATION
Inventor: Tetsuya SHIBATA , Hideaki FUKUZAWA , Takashi KIKUKAWA , Tomohito MIZUNO
Abstract: An optical device that 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 substrate; and a waveguide is provided, wherein the waveguide and the magnetic element are located on or above the substrate, and wherein at least some of light propagating in the waveguide is applied to the magnetic element.
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公开(公告)号:US20220006191A1
公开(公告)日:2022-01-06
申请号:US17477999
申请日:2021-09-17
Applicant: TDK Corporation
Inventor: Tetsuya SHIBATA , Naoki SOTOMA
Abstract: Disclosed herein is a dual band patch antenna that includes a first feeding part, first and second radiation conductors, a first feeding conductor having one end connected to the first feeding part and other end connected to the first radiation conductor, a second feeding conductor having one end connected to the first feeding part and other end connected to the second radiation conductor, a first open stub having one end connected to the first feeding conductor and other end opened, and a second open stub having one end connected to the second feeding conductor and other end opened.
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