A method for minimizing noise on a touch panel including a plurality of drive lines (D0∼Dn) and a plurality of sensing lines, wherein the drive lines (D0∼Dn) and the sensing lines cross each other, the method comprising: performing a first dummy scan which performs, at least one time, a dummy scan in which a signal from the sensing line is sensed in a state where a driving signal is not applied to the drive line, the first dummy scan being performed at a first frequency band of a current driving signal; comparing a first threshold with a magnitude of a signal obtained through the first dummy scan; performing a second dummy scan which performs the dummy scan at least one time when the magnitude of the signal obtained through the first dummy scan is greater than the first threshold; characterised in that the second dummy scan is performed at the first frequency band; comparing a second threshold with a magnitude of a signal obtained through the second dummy scan, and estimating noise in the first frequency band; performing frequency hopping if the magnitude of the signal obtained through the second dummy scan is greater than the second threshold or if a number of the repetition times of the first and second dummy scans is greater than or equal to a threshold number (MAX_TRY); wherein the performing frequency hopping changes the frequency of the driving signal; and repeating the steps of the performing the first dummy scan, the comparing the first threshold with the magnitude of the signal obtained through the first dummy scan, the performing the second dummy scan, and the comparing the second threshold with the magnitude of the signal obtained through the second dummy scan if the magnitude of the signal obtained through the second dummy scan is smaller than or equal to the second threshold. performing a first dummy scan which performs, at least one time, a dummy scan in which a signal from the sensing line is sensed in a state where a driving signal is not applied to the drive line, the first dummy scan being performed at a first frequency band of a current driving signal; comparing a first threshold with a magnitude of a signal obtained through the first dummy scan; performing a second dummy scan which performs the dummy scan at least one time when the magnitude of the signal obtained through the first dummy scan is greater than the first threshold; characterised in that the second dummy scan is performed at the first frequency band; comparing a second threshold with a magnitude of a signal obtained through the second dummy scan, and estimating noise in the first frequency band; performing frequency hopping if the magnitude of the signal obtained through the second dummy scan is greater than the second threshold or if a number of the repetition times of the first and second dummy scans is greater than or equal to a threshold number (MAX_TRY); wherein the performing frequency hopping changes the frequency of the driving signal; and repeating the steps of the performing the first dummy scan, the comparing the first threshold with the magnitude of the signal obtained through the first dummy scan, the performing the second dummy scan, and the comparing the second threshold with the magnitude of the signal obtained through the second dummy scan if the magnitude of the signal obtained through the second dummy scan is smaller than or equal to the second threshold.