Touch and display driving circuit, touch and display apparatus

A touch and display driving circuit, comprising a display device, a driving transistor, a light-sensing touch module and a compensation driving module, the light-sensing touch module comprises a phototransistor and a light-sensing control unit, a gate of the phototransistor is connected with a first electrode of the phototransistor, the light-sensing control unit is connected with the phototransistor and a read line, a control electrode of the driving transistor is connected with the compensation driving module, the compensation driving module is connected with a first power supply terminal, a first terminal of the display device, a first electrode of the driving transistor and a second electrode of the driving transistor, a second terminal of the display device is connected with a second power supply terminal, wherein:

• the driving transistor is used for driving the display device to display pixels;
• the compensation driving module is used for adjusting voltage of the control electrode of the driving transistor to eliminate influence on driving current by threshold voltage of the driving transistor when the driving transistor drives the display device to display pixels;
• the phototransistor is used for generating a corresponding electric signal in accordance with received light intensity, and sending the electric signal to the light-sensing control unit;
• the light-sensing control unit is used for controlling status of the phototransistor and storing the electric signal, and sending the electric signal via the read line to a signal processing unit connected with the read line during a light-sensing reading phase;
• and
• the signal processing unit processes the electric signal to determine a position where touch is taken place.