APPARATUS FOR SENSING CAPACITANCE, AND TOUCHSCREEN APPARATUS

摘要

The present invention relates to a capacitance sensing apparatus and a touch screen apparatus. The capacitance sensing apparatus according to the present invention includes a driving circuit unit for applying a driving signal in a first period to a node capacitor, a buffer unit for generating an output voltage of which a voltage level is changed in a second period which is different from the first period, a buffer capacitor which is charged and discharged by the output voltage, and an integration circuit unit which integrates a voltage charged in the buffer capacitor.