Abstract: Provided is a magnetic field detection device that includes a first and second soft magnetic bodies, and a magnetic detector. The first and second soft magnetic bodies extend along a first plane and are disposed in confronted relation in a third direction. The first plane includes both a first direction and a second direction orthogonal to the first direction. The third direction is orthogonal to both the first and second directions. The magnetic detector is provided between the first and second soft magnetic bodies in the third direction.

Abstract: Provided is a magnetic field detection device that includes a first soft magnetic body and a magnetic detector. The first soft magnetic body includes a first plate and a first protrusion. The first plate includes a first surface including a first outer edge. The first protrusion is provided at a first arrangement position in the first surface and includes a first tip on opposite side to the first surface. The first arrangement position is set back from the first outer edge. The magnetic detector is provided in the vicinity of the first tip.

Abstract: A semiconductor device includes an n-type semiconductor substrate which includes an n-type impurity having a diffusion coefficient less than a diffusion coefficient of phosphorus, an n-type epitaxial layer which includes a high concentration region, an intermediate concentration region and a low concentration region formed in this order from the semiconductor substrate side and has a concentration gradient in which an n-type impurity concentration is decreased in a downward step-wise manner from the semiconductor substrate toward a crystal growth direction by the high concentration region, the intermediate concentration region and the low concentration region, and a trench structure which includes a trench formed in the low concentration region, an insulating layer formed on an inner wall of the trench and an embedded electrode which is embedded in the trench across the insulating layer.

Abstract: A semiconductor device includes a semiconductor layer that has a first surface and a second surface, a trench that is formed at the first surface of the semiconductor layer and that extends in a first direction, an element portion that has a first-conductivity-type first region, a second-conductivity-type second region, and third-conductivity-type third region that are formed in order along a depth direction of the trench from the first surface of the semiconductor layer, a gate insulating film formed at an inner surface of the trench, and a gate electrode that is embedded in the trench and that faces the first region, the second region, and the third region through the gate insulating film, and the trench includes a first portion in which the gate electrode is embedded and that has a first width and a second portion that is formed at an outer peripheral portion positioned on a more outward side than a termination of the gate electrode in the first direction and that has a second width larger than the first w

Abstract: There is provided a semiconductor device including: a semiconductor layer including a main surface; a plurality of trenches including a plurality of first trench portions and a plurality of second trench portions, respectively; an insulating layer formed in an inner wall of each of the second trench portions; a first electrode buried in each of the second trench portions with the insulating layer interposed between the first electrode and each of the second trench portions; a plurality of insulators buried in the first trench portions so as to cover the first electrode; a contact hole formed at a region between the plurality of first trench portions in the semiconductor layer so as to expose the plurality of insulators; and a second electrode buried in the contact hole.

Abstract: Provided is a magnetic field detection device that includes a first and second soft magnetic bodies, and a magnetic detector. The first and second soft magnetic bodies extend along a first plane and are disposed in confronted relation in a third direction. The first plane includes both a first direction and a second direction orthogonal to the first direction. The third direction is orthogonal to both the first and second directions. The magnetic detector is provided between the first and second soft magnetic bodies in the third direction.

Abstract: A magnetic field detection device includes a first soft magnetic body, a second soft magnetic body, and a magnetism detection element. The first soft magnetic body extends to have a first length in a first direction, and has a first width, smaller than the first length, in a second direction. The second direction is substantially orthogonal to the first direction. The second soft magnetic body is disposed to be spaced apart from and face the first soft magnetic body in the first direction, extends to have a second length in the first direction, and has a second width, smaller than the second length, in the second direction. The magnetism detection element is disposed, in the first direction, between the first and second soft magnetic bodies, and extends to have a third length in the first direction and a third width, larger than the third length, in the second direction.

Abstract: A rotation angle sensing device is provided with a magnet that is placed to be integrally rotatable with a rotary shaft of a rotating body in association with a rotating body, where the shape of the magnet as viewed along the rotary shaft is substantially circular; a magnetic sensor part that outputs a sensor signal based upon a change in a direction of a magnetic field in association with the rotation of the magnet; and a rotation angle detecting part that detects a rotation angle of the rotating body based upon the sensor signal output by the magnetic sensor part. The magnet has a component of a magnetization vector in a direction that is orthogonal to the rotation axis.

Abstract: A rotational angle detection apparatus is provided with a magnet disposed so as to be rotatable integrally with an axis of rotation, having a substantially circular shape when viewed along the axis of rotation, and including a magnetization vector component in a direction orthogonal to the axis of rotation; a magnetic sensor that outputs a sensor signal on the basis of change in a magnetic field accompanying rotation of the magnet; and a rotational angle detector that detects a rotational angle of the rotating body on the basis of the sensor signal output by the magnetic sensor; wherein the magnet has a curved inclined surface with a concave shape along the axis of rotation from a prescribed position on the outer side in a radial direction toward the axis of rotation, and when a circular virtual plane orthogonal to the axis of rotation and centered at the axis of rotation is established at a position opposed to the curved inclined surface, the magnetic sensor is disposed at a position at which the amplitudes

Abstract: Provided is a magnetic field detection device that includes a first and second soft magnetic bodies, and a magnetic detector. The first and second soft magnetic bodies extend along a first plane and are disposed in confronted relation in a third direction. The first plane includes both a first direction and a second direction orthogonal to the first direction. The third direction is orthogonal to both the first and second directions. The magnetic detector is provided between the first and second soft magnetic bodies in the third direction.

Abstract: A semiconductor device includes a first conductivity type semiconductor layer having a first surface and a second surface opposite to the first surface and having an element portion formed in the first surface and an outer peripheral portion surrounding the element portion, a semiconductor element structure formed in the element portion, multiple guard ring trenches formed in the outer peripheral portion and each formed in the first surface of the semiconductor layer, and a second conductivity type outer peripheral portion impurity region formed in the outer peripheral portion, in which the multiple guard ring trenches include a first unit consisting of multiple guard ring trenches and a second unit consisting of multiple guard ring trenches arranged on the outside of the semiconductor layer relative to the multiple guard ring trenches belonging to the first unit, and in which the outer peripheral portion impurity region includes a first portion arranged below the multiple guard ring trenches belonging to the

Abstract: Provided is a magnetic field detection device that includes a first soft magnetic body and a magnetic detector. The first soft magnetic body includes a first plate and a first protrusion. The first plate includes a first surface including a first outer edge. The first protrusion is provided at a first arrangement position in the first surface and includes a first tip on opposite side to the first surface. The first arrangement position is set back from the first outer edge. The magnetic detector is provided in the vicinity of the first tip.

Abstract: A magnetic field detection device includes a first soft magnetic body, a second soft magnetic body, and a magnetism detection element. The first soft magnetic body extends to have a first length in a first direction, and has a first width, smaller than the first length, in a second direction. The second direction is substantially orthogonal to the first direction. The second soft magnetic body is disposed to be spaced apart from and face the first soft magnetic body in the first direction, extends to have a second length in the first direction, and has a second width, smaller than the second length, in the second direction. The magnetism detection element is disposed, in the first direction, between the first and second soft magnetic bodies, and extends to have a third length in the first direction and a third width, larger than the third length, in the second direction.

Abstract: A rotational angle detection apparatus is provided with a magnet disposed so as to be rotatable integrally with an axis of rotation, having a substantially circular shape when viewed along the axis of rotation, and including a magnetization vector component in a direction orthogonal to the axis of rotation; a magnetic sensor that outputs a sensor signal on the basis of change in a magnetic field accompanying rotation of the magnet; and a rotational angle detector that detects a rotational angle of the rotating body on the basis of the sensor signal output by the magnetic sensor; wherein the magnet has a curved inclined surface with a concave shape along the axis of rotation from a prescribed position on the outer side in a radial direction toward the axis of rotation, and when a circular virtual plane orthogonal to the axis of rotation and centered at the axis of rotation is established at a position opposed to the curved inclined surface, the magnetic sensor is disposed at a position at which the amplitudes

Abstract: Provided is a magnetic field detection device that includes a first and second soft magnetic bodies, and a magnetic detector. The first and second soft magnetic bodies extend along a first plane and are disposed in confronted relation in a third direction. The first plane includes both a first direction and a second direction orthogonal to the first direction. The third direction is orthogonal to both the first and second directions. The magnetic detector is provided between the first and second soft magnetic bodies in the third direction.

Abstract: A magnetic field detection device includes a first soft magnetic body, a second soft magnetic body, and a magnetism detection element. The first soft magnetic body extends to have a first length in a first direction, and has a first width, smaller than the first length, in a second direction. The second direction is substantially orthogonal to the first direction. The second soft magnetic body is disposed to be spaced apart from and face the first soft magnetic body in the first direction, extends to have a second length in the first direction, and has a second width, smaller than the second length, in the second direction. The magnetism detection element is disposed, in the first direction, between the first and second soft magnetic bodies, and extends to have a third length in the first direction and a third width, larger than the third length, in the second direction.

Abstract: A magnetic field detection device includes a first soft magnetic body, a second soft magnetic body, and a magnetism detection element. The first soft magnetic body extends to have a first length in a first direction, and has a first width, smaller than the first length, in a second direction. The second direction is substantially orthogonal to the first direction. The second soft magnetic body is disposed to be spaced apart from and face the first soft magnetic body in the first direction, extends to have a second length in the first direction, and has a second width, smaller than the second length, in the second direction. The magnetism detection element is disposed, in the first direction, between the first and second soft magnetic bodies, and extends to have a third length in the first direction and a third width, larger than the third length, in the second direction.

Abstract: A rotation angle sensing device is provided with a magnet that has a component with a magnetization vector in a direction orthogonal to a rotary shaft, a magnetic sensor part that outputs a sensor signal, and a rotation angle sensing part that detects a rotation angle of a rotating body based upon the sensor signal; the magnet has first and second surfaces substantially orthogonal to the rotary shaft, and a concave side surface that is continuous throughout all circumferences in the circumferential direction; the magnetic sensor part is placed within the space surrounded by the concave side surface, and at a position where an amplitude of a magnetic field intensity Hr and an amplitude of a magnetic field intensity H? on the virtual plane are substantially identical to each other, and outputs either the magnetic field intensity Hr or the magnetic field intensity H? as the sensor signal.

Abstract: A transmission device that includes a first shaft, a second shaft to which torque is transmitted from the first shaft via a torque transmitting mechanism, a tubular drive gear attached to the second shaft, and a driven gear that meshes with the drive gear, wherein the drive gear includes a plurality of outer teeth that are each meshed with a corresponding one of gear teeth of the driven gear and a fitting portion that is formed on an inner peripheral surface of the drive gear and that is fitted to the second shaft so that the drive gear rotates integrally with the second shaft.

Abstract: A magnetic field detection device includes a first soft magnetic body, a second soft magnetic body, and a magnetism detection element. The first soft magnetic body extends to have a first length in a first direction, and has a first width, smaller than the first length, in a second direction. The second direction is substantially orthogonal to the first direction. The second soft magnetic body is disposed to be spaced apart from and face the first soft magnetic body in the first direction, extends to have a second length in the first direction, and has a second width, smaller than the second length, in the second direction. The magnetism detection element is disposed, in the first direction, between the first and second soft magnetic bodies, and extends to have a third length in the first direction and a third width, larger than the third length, in the second direction.