Abstract: A position detection device includes a magnet that generates a magnetic field to be detected, and a magnetic sensor. The magnetic sensor detects the magnetic field to be detected and generates a detection value corresponding to the position of the magnet. The magnetic field to be detected has a first direction that changes within a first plane, at a reference position in the first plane. The magnetic sensor includes four MR elements. Each of the MR elements includes a first magnetic layer having first magnetization that can change in direction within a second plane corresponding to the each of the MR elements. The first plane and the second plane intersect at a dihedral angle ? other than 90°. A detection value depends on the direction of the first magnetization.

Abstract: In a magnetic sensor, first and second resistors are provided in a path that connects a power supply port and a first output port, and third and fourth resistors are provided in a path that connects a ground port and the first output port. In a direction parallel to an X direction, both of a distance between the first resistor and the second resistor and a distance between the third resistor and the fourth resistor are ?/2, and a distance between the first resistor and the third resistor is zero. A magnetization of a magnetization pinned layer in the first and fourth resistors contains a component in a ?X direction. The magnetization of the magnetization pinned layer in the second and third resistors contains a component in the X direction.

Abstract: A position detection device includes a magnet that generates a magnetic field to be detected, and a magnetic sensor. The magnetic sensor detects the magnetic field to be detected and generates a detection value corresponding to the position of the magnet. The magnetic field to be detected has a first direction that changes within a first plane, at a reference position in the first plane. The magnetic sensor includes four MR elements. Each of the MR elements includes a first magnetic layer having first magnetization that can change in direction within a second plane corresponding to the each of the MR elements. The first plane and the second plane intersect at a dihedral angle ? other than 90°. A detection value depends on the direction of the first magnetization.

Abstract: A position detection device includes a magnetic field generator and a magnetic sensor. The magnetic field generator is configured so that a mode of variation in a target magnetic field relative to variation in a position of a key cap varies nonlinearly relative to the variation in the position of the key cap. The magnetic sensor is configured so that a mode of variation in a detection signal relative to the variation in the target magnetic field varies nonlinearly relative to the variation in the target magnetic field.

Abstract: A position detection unit includes a magnetic sensor, a first magnetic field generator, and a second magnetic field generator. The first magnetic field generator includes a first magnet and a second magnet spaced apart from each other in a first direction, and generates a first magnetic field. The second magnetic field generator generates a second magnetic field and is movable along a second direction orthogonal to the first direction with respect to the first magnetic field generator and the magnetic sensor. In the first direction, a center position of the magnetic sensor lies at a position in a region between the first magnet and the second magnet other than a midpoint position between the first magnet and the second magnet. The magnetic sensor generates a detection signal corresponding to a direction of a magnetic field to be detected, and detects a positional change of the second magnetic field generator.

Abstract: A position detection unit includes a magnetic sensor, a first magnetic field generator, and a second magnetic field generator. The first magnetic field generator includes a first magnet and generates a first magnetic field. The first magnet includes a first magnetic material and has a first shape. The second magnetic field generator includes a second magnet, generates a second magnetic field, and is movable along a first direction with respect to the first magnetic field generator and the magnetic sensor. The second magnet includes a second magnetic material and has a second shape. The magnetic sensor generates a detection signal corresponding to the direction of a magnetic field of interest, and detects a positional change of the second magnetic field generator. The magnetic field of interest is a composite of the first magnetic field along a first plane and the second magnetic field along the first plane.

Abstract: 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.

Abstract: 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%.

Abstract: 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.

Abstract: A position detection device includes a magnet that generates a magnetic field to be detected, and a magnetic sensor. The magnetic sensor detects the magnetic field to be detected and generates a detection value corresponding to the position of the magnet. The magnetic field to be detected has a first direction that changes within a first plane, at a reference position in the first plane. The magnetic sensor includes four MR elements. Each of the MR elements includes a first magnetic layer having first magnetization that can change in direction within a second plane corresponding to the each of the MR elements. The first plane and the second plane intersect at a dihedral angle ? other than 90°. A detection value depends on the direction of the first magnetization.

Abstract: 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.

Abstract: A position detection device includes a magnet that generates a magnetic field to be detected, and a magnetic sensor. The magnetic sensor detects the magnetic field to be detected and generates a detection value corresponding to the position of the magnet. The magnetic field to be detected has a first direction that changes within a first plane, at a reference position in the first plane. The magnetic sensor includes four MR elements. Each of the MR elements includes a first magnetic layer having first magnetization that can change in direction within a second plane corresponding to the each of the MR elements. The first plane and the second plane intersect at a dihedral angle ? other than 90°. A detection value depends on the direction of the first magnetization.

Abstract: A magnetic sensor includes a bridge circuit including a first arm and a second arm, a first substrate, and a second substrate. The first arm is provided on the first substrate. The second arm is provided on the second substrate. The first arm includes a first resistor and a second resistor connected in series. The second arm includes a third resistor and a fourth resistor connected in series. The second substrate is located at a position away from the first substrate so that a phase of a resistance of the second arm when a target magnetic field changes periodically is different from that of a resistance of the first arm when the target magnetic field change periodically.

Abstract: A position detection device includes a magnet that generates a magnetic field to be detected, and a magnetic sensor. The magnetic sensor detects the magnetic field to be detected and generates a detection value corresponding to the position of the magnet. The magnetic field to be detected has a first direction that changes within a first plane, at a reference position in the first plane. The magnetic sensor includes four MR elements. Each of the MR elements includes a first magnetic layer having first magnetization that can change in direction within a second plane corresponding to the each of the MR elements. The first plane and the second plane intersect at a dihedral angle ? other than 90°. A detection value depends on the direction of the first magnetization.

Abstract: Magnetic sensor 1 has magnetic field detection element 7 that detects a magnetic field that is generated by magnet 2 that rotates about central axis C; and substrate 10 that has first side P1 and second side P2 that is a reverse side of the first side P1, wherein second side P2 includes first slope PK1 that is inclined with respect to first side P1. Magnetic field detection element 7 is provided along first slope PK1. Magnet 2 is separated from central axis C and polarities of magnet 2 alternate in a circumferential direction about central axis C. First side P1 is substantially parallel to central axis C. First slope PK1 is inclined with respect to first side P1 by an average angle of 0. In a plane perpendicular to central axis C, intensity of the magnetic field where magnetic field detection element 7 is positioned changes as magnet 2 rotates, and the relation (1/Ks)×0.8?MFR?(1/Ks)×1.

Abstract: A magnetic sensor device includes a magnetic sensor, a die pad, and four leads. The magnetic sensor includes a bridge circuit including a plurality of arms and a plurality of pads electrically connected to the bridge circuit. One of the plurality of arms is provided between one of the plurality of pads and a different one of the plurality of pads in circuit configuration. The magnetic sensor further includes a sub-pad electrically connected between one end and another end of the one arm and also electrically connected to the die pad.

Abstract: A position detection device includes a magnetic sensor and a first magnetic field generator. The first magnetic field generator is disposed to be spaced from and face the magnetic sensor in a first-axis direction, includes a first multipolar magnet, and generates a first magnetic field to be exerted on the magnetic sensor, the first multipolar magnet including N poles and S poles, the N and S poles being adjacent in the first-axis direction. The magnetic sensor and the first magnetic field generator are provided to be relatively movable with respect to each other in a second-axis direction orthogonal to the first-axis direction. A center position of the magnetic sensor in a third-axis direction orthogonal to both the first-axis direction and the second-axis direction is different from a center position of the first multipolar magnet in the third-axis direction.

Abstract: A position detection device includes a magnetic field generator and a magnetic sensor. The magnetic field generator is configured so that a mode of variation of a direction of a target magnetic field relative to variations in a position of a lens is such that the direction of the target magnetic field varies nonlinearly relative to the variations in the position of the lens. The magnetic sensor is configured so that a mode of variation of a detection signal relative to variations in the direction of the target magnetic field is such that the detection signal varies nonlinearly relative to the variations in the direction of the target magnetic field.

Abstract: 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%.

Abstract: A magnetic encoder includes a magnetic field generator configured to generate a target magnetic field including a magnetic field component, and a magnetic sensor configured to detect the target magnetic field. The magnetic sensor includes a plurality of resistors each configured to change in resistance with change in strength of the magnetic field component. The magnetic field generator is a magnetic scale including a plurality of pairs of N and S poles alternately arranged. A magnetic pole pitch being a center-to-center distance between two N poles adjoining via one S pole is different from a design pitch being four times a distance between a predetermined position in one resistor included in the plurality of resistors and a predetermined position in another resistor.