Semiconductor device, magnetic sensor, and magnetic sensor unit

Abstract

A semiconductor device, comprising a semiconductor chip; a pad electrode; an electrode portion; a wiring portion. An insulating portion is formed from electrically insulating material, covering the surface of the semiconductor chip and sealing the sensor element, wiring portion and electrode portion, in a state which exposes at least the electrode portion on the surface of the semiconductor chip. The electrode portion is placed in a position which does not overlap with the sensor element in the thickness direction of the semiconductor chip.

1 . A magnetic sensor, comprising a magnetic sensor chip, formed substantially into a sheet shape, which is sensitive to the magnetic component in at least one direction of a magnetic field, and a plurality of electrode portions, protruding from the surface of said magnetic sensor chip, which electrically connect said magnetic sensor chip to a substantially sheet-shaped circuit board, wherein
 the electrode portions are arranged in a plurality of parallel rows on the surface of said magnetic sensor chip;   the protrusion lengths of said electrode portions decrease gradually in the direction of arrangement of said plurality of rows, and   a circuit board on which are mounted said magnetic sensors with said electrode portions in contact with the surface, wherein   the magnetic sensor chip of at least one of the magnetic sensors is sensitive to magnetic components of a magnetic field in two directions; and,   the magnetic sensors are placed on said circuit board such that the direction of sensitivity of the other magnetic sensor chip intersects the plane comprising the two directions of sensitivity of said one magnetic sensor chip.   
   
   
       2 . A magnetic sensor, comprising a magnetic sensor chip, formed substantially into a sheet shape, which is sensitive to the magnetic component in at least one direction of a magnetic field, and a plurality of electrode portions, protruding from the surface of said magnetic sensor chip, which electrically connect said magnetic sensor chip to a substantially sheet-shaped circuit board, wherein
 the electrode portions are arranged in a plurality of parallel rows on the surface of said magnetic sensor chip;   the protrusion lengths of said electrode portions decrease gradually in the direction of arrangement of said plurality of rows; and   a circuit board on which are mounted said magnetic sensors, wherein   the magnetic sensor chip of at least one of the magnetic sensors is sensitive to magnetic components of a magnetic field in two directions; and,   the magnetic sensors are placed on said circuit board, such that the direction of sensitivity of the other magnetic sensor chip intersects the plane comprising the two directions of sensitivity of said one magnetic sensor chip.