Source drive circuit and display device

A source drive circuit, comprising:

• a detection circuit, configured to detect a change value of a common voltage based on a common voltage feedback signal input by a display panel;
• and
• a compensation circuit, configuration to obtain a compensation data signal based on a data signal and the change value of the common voltage, and output the compensation data signal to a pixel electrode of the display panel,
• wherein the detection circuit comprises a differential amplifier, configured to calculate a difference between a common voltage reference signal and the common voltage feedback signal to obtain the change value of the common voltage,
• the compensation circuit comprises an inverting operational amplifier and a non-inverting adder,
• the inverting operational amplifier is configured to invert and amplify the change value of the common voltage to obtain an amplified common voltage change value, and the non-inverting adder is configured to obtain and output the compensation data signal based on the data signal and the amplified common voltage change value,
• a non-inverting input terminal of the differential amplifier is connected with a common voltage line through a first resistor, an inverting input terminal of the differential amplifier is connected with a feedback common voltage line through a second resistor, the non-inverting input terminal of the differential amplifier is connected with a first voltage terminal through a third resistor, and the inverting input terminal and an output terminal of the differential amplifier are connected through a fourth resistor;
• the output terminal of the differential amplifier is connected with an inverting input terminal of the inverting operational amplifier through a fifth resistor, the inverting input terminal of the inverting operational amplifier is connected with an output terminal of the inverting operational amplifier through a sixth resistor;
• and a non-inverting input terminal of the inverting operational amplifier is connected with a second voltage terminal through a seventh resistor;
• and
• a non-inverting input terminal of the non-inverting adder is connected with a data signal voltage line through an eighth resistor, the output terminal of the inverting operational amplifier is connected with the non-inverting input terminal of the non-inverting adder through a ninth resistor, an inverting input terminal of the non-inverting adder is connected with an output terminal of the non-inverting adder through a tenth resistor, and the inverting input terminal of the non-inverting adder is connected with a third voltage terminal through an eleventh resistor.