| 摘要 |
A sensor device for suppressing a magnetic stray field, having a semiconductor body with a surface, formed in an x-y plane, and a back surface. Each circle half of a disk-shaped magnet has two magnetic poles and the magnet is rotatable relative to the IC housing around a z-direction. An imaginary lengthening of the axis penetrates the magnet in the center of gravity of the main extension surface of the magnet. A first pixel cell and a second pixel cell are integrated into the surface of the semiconductor body together with a circuit arrangement, and each pixel cell has a first magnetic field sensor and a second magnetic field sensor. The first pixel cell is spaced apart from the second pixel cell along a connecting line, and the first pixel cell in a projection along an imaginary lengthening of the axis is arranged within the two inner circle segments. |
| 主权项 |
1. A sensor device for suppressing a magnetic stray field, the sensor device comprising:
a semiconductor body with a surface formed in an x-y plane and a back surface, an x-direction and a y-direction are formed orthogonal to one another, the semiconductor body being arranged on a substrate; an axis formed in a z-direction, the z-direction being formed orthogonal to the x-y plane; a magnet that has a planar main extension surface in a direction of the x-y plane, an IC housing spaced apart from the main extension surface of the magnet such that the surface of the semiconductor body is oriented substantially parallel to the main extension surface of the magnet, the magnet having a magnetization with four magnetic poles in the direction of the x-y plane and two magnetic poles as outer circle segments surround the two inner magnetic poles as circle segments, so that each circle half of the magnet has two magnetic poles, the magnet being rotatable around the z-direction relative to the IC housing and an imaginary lengthening of an axis penetrates the magnet in a center of gravity of the main extension surface of the magnet; a first pixel cell; and a second pixel cell, the first and second pixel cells being formed in the surface of the semiconductor body together with a circuit arrangement, wherein each of the first and second pixel cells have a first magnetic field sensor and a second magnetic field sensor, wherein the first magnetic field sensor detects a magnetic field in the x-direction and the second magnetic field sensor detects a magnetic field in the y-direction, wherein the first pixel cell is spaced apart from the second pixel cell along a connecting line, and wherein the first pixel cell in a projection along the imaginary lengthening of the axis is arranged within the two inner circle segments. |
