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公开(公告)号：US12046524B2
公开(公告)日：2024-07-23
申请号：US17696253
申请日：2022-03-16
申请人： TDK Corporation
发明人： Yongfu Cai , Shuhei Miyazaki
CPC分类号： H01L23/295 , H01L21/56 , H01L24/19 , H01L24/20
摘要： In an assembly in which a space between two elements is filled with a filler containing resin, a configuration that can limit both the size of the assembly and the cost of the fillers is provided. An assembly of stacked elements has: first element having first surface; resin layer that is arranged on first surface and that contains a plurality of fillers; and second element that is arranged on resin layer and that has second surface that is in contact with resin layer. In a section that is perpendicular to second surface, the average flattening ratio of fillers that are in contact with second surface is larger than the average flattening ratio of fillers that are not in contact with second surface. Here, the flattening ratio is a ratio of the maximum length of the filler in a direction parallel to second surface to the maximum thickness of the filler in a direction perpendicular to second surface.
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公开(公告)号：US11650272B2
公开(公告)日：2023-05-16
申请号：US17227745
申请日：2021-04-12
申请人： TDK CORPORATION
发明人： Yongfu Cai , Toshihide Suto
CPC分类号： G01R33/093 , G01R33/0029 , G01R33/091 , G01R33/098
摘要： A magnetism detection device according to an embodiment of the disclosure includes a sensor section and a resistive section. The sensor section includes a first magnetism detection element. The first magnetism detection element has a first stacked structure and is configured to detect a magnetic field to be detected. The resistive section includes a first resistive element and is coupled to the sensor section. The first resistive element has the first stacked structure.
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公开(公告)号：US11585872B2
公开(公告)日：2023-02-21
申请号：US17203140
申请日：2021-03-16
申请人： TDK CORPORATION
发明人： Yongfu Cai
摘要： A magnetic sensor includes a first resistor having a first resistance and a first correction resistor having a second resistance. The first resistor and the first correction resistor are connected in series. The first resistor is configured so that the first resistance changes periodically as strength of a magnetic field component changes periodically. The first correction resistor is configured so that a change in a sum of the first resistance and the second resistance due to a noise magnetic field is smaller than a change in the first resistance due to the noise magnetic field.
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公开(公告)号：US11359908B2
公开(公告)日：2022-06-14
申请号：US16527117
申请日：2019-07-31
申请人： TDK CORPORATION
发明人： Yongfu Cai , Hiraku Hirabayashi
摘要： A magnetic field generator generates a detection-target magnetic field related to an angle to be detected. An angle sensor includes a first and a second magnetic sensor and a processor. The first magnetic sensor detects, at a first detection position, a first applied magnetic field including the detection-target magnetic field, and generates first detection information having a correspondence with the angle to be detected. The second magnetic sensor detects, at a second detection position, a second applied magnetic field including the detection-target magnetic field, and generates second detection information having a correspondence with the angle to be detected. The processor generates an angle detection value by performing arithmetic processing using the first and second detection information. The ratio of a strength of the detection-target magnetic field at the second detection position to a strength of the detection-target magnetic field at the first detection position is 1.65 or more.
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5.发明授权公开(公告)号：US12072398B2
公开(公告)日：2024-08-27
申请号：US18336133
申请日：2023-06-16
申请人： TDK Corporation
发明人： Yongfu Cai
CPC分类号： G01R33/098 , G01D5/145
摘要： A magnetic sensor device includes a magnetic field converter that receives an input magnetic field input along a first direction and outputs an output magnetic field along a second direction, which is orthogonal to the first direction. A magnetic field detector is provided at a position where the output magnetic field is applied. A magnetic shield shields external magnetic fields along a third direction, which is orthogonal to both the first direction and the second direction. When viewed along the first direction, the magnetic field converter has a shape such that the length in the third direction is greater than the length in the second direction. When viewed along the first direction, the magnetic shield is provided at a position overlapping the magnetic field converter and the magnetic field detector, and the magnetic field transmittance of the external magnetic field is 1˜30%.
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公开(公告)号：US11703358B2
公开(公告)日：2023-07-18
申请号：US17713583
申请日：2022-04-05
申请人： TDK CORPORATION
发明人： Tsuyoshi Umehara , Hiraku Hirabayashi , Yongfu Cai
CPC分类号： G01D5/16 , G01B7/003 , G01R33/096 , G01R33/098 , G02B7/10
摘要： A magnetic sensor includes first to fourth resistors, a power supply port, a ground port, a first output port, and a second output port. The first resistor and the second resistor are located in a first region and connected in series via a first connection point connected to the first output port. The third resistor and the fourth resistor are located in a second region and connected in series via a second connection point connected to the second output port, at least a part of the second region being located at a position different from the first region in a direction parallel to an X direction. The first and second resistors are located between the third and fourth resistors in a direction parallel to a Y direction.
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公开(公告)号：US11569143B2
公开(公告)日：2023-01-31
申请号：US16407623
申请日：2019-05-09
申请人： TDK Corporation
发明人： Yongfu Cai , Shuhei Miyazaki , Kazuma Yamawaki
IPC分类号： H01L23/28 , H01L23/498 , H01L23/00
摘要： An electronic component package of an embodiment of the disclosure includes a base, a first plated layer, a first electronic component chip, a second plated layer, and a second electronic component chip. The base includes a first surface and a second surface. The first plated layer covers the first surface. The first electronic component chip is provided on the first plated layer with a first insulating layer being interposed therebetween. The second plated layer covers the second surface. The second electronic component chip is provided on the second plated layer with a second insulating layer being interposed therebetween. The first plated layer and the second plated layer each include a first metal material that is less likely to undergo an ion migration phenomenon than silver (Ag).
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公开(公告)号：US11553132B2
公开(公告)日：2023-01-10
申请号：US17126551
申请日：2020-12-18
申请人： TDK Corporation
摘要： The position detecting device of the present invention is a device for detecting the position of a movable detection target within a predetermined movable range. The position detecting device comprises: a first magnet (13A) and a second magnet (13B) which are arranged so as to move integrally with the movement of the detection target; a first magnetic detecting circuit (20A) that detects the magnetic field of the first magnet (13A) and a second magnetic detecting circuit (20B) that detects the magnetic field of the second magnet (13B), which are arranged at positions outside the movable range; and a differential amplifier (8) that amplifies the difference between the detection signals of the magnetic field output from the first magnetic detecting circuit (20A) and the second magnetic detecting circuit (20B), and that outputs the amplified difference of the signal as a position detecting signal of the detection target.
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公开(公告)号：US12007236B2
公开(公告)日：2024-06-11
申请号：US17745311
申请日：2022-05-16
申请人： TDK CORPORATION
发明人： Yongfu Cai , Hiraku Hirabayashi
CPC分类号： G01B7/30 , G01B7/003 , G01R33/07 , G01R33/09 , G01R33/0011
摘要： A magnetic field generator generates a detection-target magnetic field related to an angle to be detected. An angle sensor includes a first and a second magnetic sensor and a processor. The first magnetic sensor detects, at a first detection position, a first applied magnetic field including the detection-target magnetic field, and generates first detection information having a correspondence with the angle to be detected. The second magnetic sensor detects, at a second detection position, a second applied magnetic field including the detection-target magnetic field, and generates second detection information having a correspondence with the angle to be detected. The processor generates an angle detection value by performing arithmetic processing using the first and second detection information. The ratio of a strength of the detection-target magnetic field at the second detection position to a strength of the detection-target magnetic field at the first detection position is 1.65 or more.
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公开(公告)号：US11474168B2
公开(公告)日：2022-10-18
申请号：US17411514
申请日：2021-08-25
申请人： TDK Corporation
发明人： Naoki Ohta , Yongfu Cai
摘要： A magnetic sensor device having a spin-valve-type magnetoresistive effect element and capable of stably applying a bias magnetic field on the free layer of the magnetoresistive effect element includes a spin-valve-type magnetoresistive effect element, a substrate on which the magnetoresistive effect element is positioned, a power source that supplies a substantially constant electric current applied on the magnetoresistive effect element, and a magnetic field generator that is connected to the electric current path of the electric current applied on the magnetoresistive effect element in series. The magnetic field generator is provided to be capable of applying a bias magnetic field on at least a portion of the magnetoresistive effect element. The magnetic field generator is close to a portion of the magnetoresistive effect element and is positioned at a different level from the substrate.
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