Drive circuit and display device

A drive circuit, comprising:

• a drive chip, configured to provide a drive signal, comprising a detection diode;
• a power supply circuit, configured to provide a constant power supply for the detection diode;
• a detection resistor, having a constant resistance value and being connected in series with the detection diode;
• an acquisition circuit, comprising a first acquisition sub-circuit and a second acquisition sub-circuit, the first acquisition sub-circuit being configured to acquire and output a voltage across the detection diode, and the second acquisition sub-circuit being configured to acquire and output a voltage across the detection resistor;
• a timing controller, comprising a detection circuit and a control circuit, wherein the detection circuit is configured to calculate a current flowing through the detection diode based on the voltage across the detection resistor, and to obtain an internal temperature of the drive chip based on the voltage across the detection diode and the current flowing through the detection diode;
• and
• a control circuit, configured to control the drive chip based on the internal temperature of the drive chip obtained by the detection circuit;
• when the detection circuit detects that the internal temperature of the drive chip is greater than a maximum threshold temperature or less than a minimum threshold temperature, the control circuit controls the drive chip to stop outputting the drive signal.