Voltafield Technology Corporation

Ta-Yung Wong

Chien-Min Lee

Fu-Tai Liou

Nai-Chung Fu

Ming-Yu Kuo

The present invention provides device for generating magnetic field of calibration and built-in self-calibration (BISC) magnetic sensor and calibration method, in which a novelty structure utilized for generating a uniform, predetermined magnitude, and three-dimensional orthogonal or approximately orthogonal magnetic field of calibration is arranged in the magnetic sensor such that the magnetic sensor can perform BISC function for obtaining a calibrating information with respect to the magnetic field of calibration anytime and anywhere. The magnetic sensor can be arranged in the application device for measuring magnetic field under the real environment where the magnetic sensor is located and the calibrating information are utilized for calibrating the measuring result thereby improving and advancing the accuracy of measuring three-dimensional magnetic field.

Device for generating a magnetic field of calibration and built-in self-calibration magnetic sensor and calibration method using the same

A magnetoresistive sensing device includes a substrate, a magnetic layer, a first electrode and a second electrode. The substrate has a reference plane. The first electrode and a second electrode are disposed over the reference plane. The magnetic layer is disposed over the reference plane and has a magnetization direction. A non-straight angle is formed between the magnetic layer and the reference plane. The first electrode and the second electrode are electrically connected with each other through an electric pathway of the magnetic layer. An included angle is formed between the electric pathway and the magnetization direction. Consequently, the magnetoresistive sensing device is capable of measuring a magnetic field change in a Z-axis direction, which is perpendicular to a reference plane.

Growing community of inventors

Jhubei, Taiwan

Ta-Yung Wong