Touch panel driving device and touch panel device

A touch panel device comprising:

• a touch panel;
• and
• a touch panel driving device configured to sequentially perform scanning for selecting a pair of adjacent transmission signal lines and a pair of adjacent reception signal lines on the touch panel,
• wherein the touch panel driving device includes a reception circuit configured to receive reception signals whose waveforms are changed by a capacitance change caused by an operation from the pair of reception signal lines of the touch panel and generate a detection value for monitoring a touch panel operation,
• wherein the reception circuit generates the detection value by comparing levels of the reception signals from one reception signal line and the other reception signal line while sequentially switching capacitance values of a measurement capacitance unit connected to said one reception signal line, and
• the measurement capacitance unit includes a capacitance unit forming a certain capacitance value by parallel connection or series connection of a plurality of capacitors as a capacitance unit forming one capacitance value used for switching the capacitance value of the measurement capacitance unit.