FINGERPRINT DETECTION DEVICE, AND METHOD FOR COMPENSATING FOR ATTENUATION OF DRIVING SIGNAL THEREOF

摘要

Provided according to one embodiment is a fingerprint detection device comprising: an external electrode, to which a driving signal is applied; a sensor array, which comprises a plurality of sensor pads for outputting a response signal according to the application of the driving signal and is placed adjacent to the external electrode; a driving signal supply unit comprising a buffer for outputting the driving signal according to a preset gain in response to an input signal; and a compensation unit for compensating for the attenuation of the driving signal on the basis of the size of the driving signal output from the driving signal supply unit.