Touch sensing circuit

A touch sensing circuit for sensing a coupling capacitance value changed by a touch on a touch screen panel, which comprises a plurality of driving electrodes and a plurality of receiving electrodes and is provided with a coupling capacitance in a node where the driving electrodes and the receiving electrodes cross each other, and sensing whether a touch is made on the touch screen panel, the touch sensing circuit comprising:

• a differentiator configured to receive a driving signal applied to a first driving electrode and a driving signal applied to a second driving electrode, which is adjacent to the first driving electrode, and to generate a first differentiated signal and a second differentiated signal;
• an amplifier configured to receive the first differentiated signal and the second differentiated signal, and to output a amplified signal;
• and
• a detector configured to receive the amplified signal and to output a detection signal,
• wherein the touch sensing circuit senses whether a touch is made on the touch screen panel by sensing a difference in variation between a first coupling capacitance and a second coupling capacitance, in which the first coupling capacitance is formed in a node where the first driving electrode and a first receiving electrode cross each other, and the second coupling capacitance is formed in a node where the second driving electrode and a second receiving electrode cross each other.