| 摘要 |
PURPOSE:To obtain a Hall IC which has simple structure and high sensitivity by commonly using an IC package material and a bias magnet. CONSTITUTION:The material of a bias magnet 4 may be made of a ferrite magnet, but employs a material which has large impact resistance and large degree of freedom in shape such as a plastic magnet or a rubber magnet, and the magnet 4 is used also as a package as it is. When a chip 3 is bonded and connected via wirings 8, an intermediate inspection is performed, and the thickness of the magnet 4 is adjusted and mounted to the value of the magnetic field when the polarity and output voltage of a Hall element is switched to a low level. A bias magnet 4' is also mounted on the back surface of the substrate, or epoxy resin 11 is covered, and the magnet 4 may be provided on the outside. According to this configuration, a Hall element which operates in a magnetic field lower than the conventional one and has high sensitivity can be obtained inexpensively. |
