TOUCH ANALOG FRONT END AND TOUCH SENSOR CONTROLLER HAVING THE SAME

摘要

According to one embodiment of the present invention, provided is a touch analog front-end receiver (AFE) which is not influenced by a noise caused by a display device. The AFE includes: a charge to voltage (C2V) converter which converts a capacitance change amount received from a touch panel into a voltage signal; a filter separating a positive signal and a negative signal from the voltage signal and sampling the positive signal and the negative signal individually; and an integrator accumulating a difference between the sampled positive signal and the sampled negative signal.