Patent ID: 10866677

Abstract:
A touch panel device includes a touch panel which is equipped with a plurality of electrostatic capacitive sensors of which the electrostatic capacitances vary as an object comes close to, or comes into contact with, the touch panel. A measurement unit measures the electrostatic capacitance of the electrostatic capacitive sensor, and a touch detection unit detects an object coming close to, or coming into contact with, the touch panel on the basis of a difference between a measured raw value and a base line value. A base line value update unit updates the base line value to follow the raw value of the electrostatic capacitance of the electrostatic capacitive sensor to correct a variance in electrostatic capacitance of the electrostatic capacitive sensor. A proximity detection unit detects an object approaching the touch panel, and an update control unit controls the update speed on the basis of a detection result of the proximity detection unit.