Fingerprint recognition apparatus and method for reading signals thereof, display apparatus

A fingerprint recognition apparatus, including:

• m driving signal lines, n reading signal lines and m*n photosensitive devices, wherein the m driving signal lines and the n reading signal lines are arranged crosswise, the m*n photosensitive devices are arranged in a matrix form, and each of the m*n photosensitive devices includes a first electrode and a second electrode, m and n both being positive integers and “m*n” referring to a product of m and n;
• first electrodes of a same row of photosensitive devices in the m*n photosensitive devices are connected to a same driving signal line of the m driving signal lines, the m driving signal lines are configured to input a first driving signal to the m*n photosensitive devices, first electrodes of different rows of photosensitive devices in the m*n photosensitive devices are connected to different driving signal lines of the m driving signal lines;
• the second electrode is configured to input a second driving signal;
• first electrodes of a same column of photosensitive devices in the m*n photosensitive devices are connected to a same reading signal line of the n reading signal lines, and first electrodes of different columns of photosensitive devices in the m*n photosensitive devices are connected to different reading signal lines of the n reading signal lines;
• the fingerprint recognition apparatus further including:
• a plurality of electrode signal controllers, wherein each of the plurality of electrode signal controllers is connected to at least two of the m driving signal lines, different electrode signal controllers of the plurality of electrode signal controllers are connected to different driving signal lines of the m driving signal lines, the plurality of electrode signal controllers are configured to simultaneously input driving signals of different frequencies to each driving signal line connected to the plurality of electrode signal controllers, different electrode signal controllers of the plurality of electrode signal controllers are configured to input driving signals to the m driving signal lines at different time periods;
• a demodulator, wherein the demodulator is connected to the n reading signal lines, and is configured to demodulate electrical signals of different frequencies transmitted on each of the n reading signal lines when the plurality of electrode signal controllers drive each row of photosensitive devices in the m*n photosensitive devices connected to the plurality of electrode signal controllers,
• wherein a number of the demodulator is more than one;
• each of the n reading signal lines is connected to one of demodulators;
• or each of the n reading signal lines is connected to at least two of demodulators;
• or each of a plurality of demodulators is connected to each of the n reading signal lines via a switcher.