Touch driver, touch device, and display device including the same

Abstract

A touch driver includes: a plurality of current conveyors connected to a plurality of touch electrodes, the plurality of current conveyor circuits configured to (i) receive a plurality of first currents from the plurality of touch electrodes, and (ii) generate a plurality of second currents having opposite directions to the plurality of first currents; a common current subtractor circuit configured to (i) receive the plurality of first currents and the plurality of second currents from the plurality of current conveyor circuits, and (ii) generate a plurality of output currents that are a sum of (a) a mean current of the plurality of second currents and (b) the plurality of first currents; a plurality of integrator circuits configured to generate a plurality of output voltages by integrating the plurality of output currents; and an analog-to-digital converter configured to convert the plurality of output voltages into digital signals corresponding to touch data.