Alps Electric Co., Ltd.

Naoki Kitaura

Toshiaki Konno

Nobuaki Haga

A detection device includes an X-axis magnetic sensor, a Y-axis magnetic sensor, and a Z-axis magnetic sensor each having a sensing axis for detecting a geomagnetic azimuth and a sensor controlling semiconductor. The magnetic sensors are selected from those fabricated from the same wafer, each having the same structure, and directly mounted on the circuit substrate by directing the respective sensing axes of the magnetic sensors at different predetermined angles. Electrodes of the magnetic sensors for conducting the sensor controlling semiconductor are located in a parallel row at one side of the sensing surface.

Sensor chip, detection device and method of manufacturing detection device

In a magnetic sensor module, using die-bond resin as a joining material, a Z-axis magnetic sensor is mounted onto a substrate having a wire formed on its principal surface. The Z-axis magnetic sensor having electrode pads formed on its bottom surface is tilted by 90 degrees and mounted onto the substrate. Therefore, the electrode pads are positioned at a side surface thereof. A joining material accommodation area which the die-bond resin can fill is provided at the surface of the Z-axis magnetic sensor opposing the principal surface of the substrate. This joining material accommodation area has a grooved structure. At the surface of the Z-axis magnetic sensor opposing the principal surface of the substrate, the grooved structure is provided at an end portion near the wire formed on the substrate.

Growing community of inventors

Miyagi-ken, Japan

Naoki Kitaura