Magnetic touch panel formed by applying Hall array

Abstract

A magnetic touch panel formed using a Hall array includes: a substrate; a plurality of Hall resistors arranged in an array above the substrate; each Hall resistor includes a current input terminal, a current output terminal, a first voltage terminal, and a second voltage terminal; when a magnetic stylus touches a Hall resistor, the magnitude of the voltage difference generated between the first voltage terminal and the second voltage terminal indicates whether the stylus is close to the Hall resistor; a plurality of current lines pass through the Hall resistors in the same column of the Hall resistor array; each current line is configured with an electrical regulator for controlling the current line; the power supply is a current source or a voltage source; a control unit is connected to each electrical regulator; a plurality of first row voltage lines, each first row voltage line being connected in parallel to the first voltage terminal of the Hall resistor in the same row; a plurality of second row voltage lines, each second row voltage line being connected in parallel to the second voltage terminal of the Hall resistor in the same row; a voltage sensor senses the voltage difference between the first row voltage lines and the second row voltage lines to form a voltage vector; and a processing unit receives the voltage vector and the timing signal.

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