APPARATUS AND METHOD FOR SENSING CAPACITANCE, AND TOUCHSCREEN APPARATUS

摘要

The present invention proposes a capacitance sensing device comprising: a driving circuit unit for applying a driving signal to a first capacitor; a first integral circuit unit including a second capacitor generating first output voltages charged by the alteration of capacitance generated in the first capacitor based on the driving signal; and a second integral circuit unit including a third capacitor generating second output voltages charged by the alteration of capacitance in the second capacitor. The level of the second output voltages is changed with two or more times during one cycle of the driving signal applied to the first capacitor. [Reference numerals] (210) First integral circuit unit; (220) Second integral circuit unit; (230) Driving circuit unit