Fingerprint identification device, driving method thereof, display panel and display apparatus

A display panel comprising a substrate and a fingerprint identification device located on the substrate, the fingerprint identification device comprising:

• a plurality of fingerprint identification units arranged in a matrix;
• a signal input line for loading a detection signal and a signal reading line for reading an identification signal which are in one-to-one correspondence with each column of fingerprint identification units;
• wherein each fingerprint identification unit comprises a fingerprint identification electrode, a first switch unit and a second switch unit, the first switch unit is connected to the fingerprint identification electrode and the signal input line respectively for controlling an electrical conduction between the fingerprint identification electrode and the signal input line, the second switch unit is connected to the fingerprint identification electrode and the signal reading line respectively for controlling an electrical conduction between the fingerprint identification electrode and the signal reading line.

A driving method for a fingerprint identification device, comprising:

• controlling a first switch unit in each row of fingerprint identification units of the fingerprint identification device to be turned on sequentially row by row, so as to control a fingerprint identification electrode in each row of fingerprint identification units to be electrically connected with a signal input line and load a detection signal transmitted by the signal input line to the fingerprint identification electrode;
• and
• controlling a second switch unit in each row of fingerprint identification units of the fingerprint identification device to be turned on sequentially row by row, so as to control the fingerprint identification electrodes in each row of fingerprint identification units to be electrically connected with a signal reading line, read and output an identification signal generated by the fingerprint identification electrode by means of the signal reading line.