A trigger circuit of discharge signals, wherein the trigger circuit of discharge signals comprises: a driving voltage source; a first division voltage unit; a trigger terminal of discharge signals configured to output a discharge signal; and a second division voltage unit having a terminal coupled to the trigger terminal of discharge signals and another terminal grounded; wherein a terminal of the first division voltage unit is coupled to the driving voltage source and another terminal of the first division voltage unit is coupled to the trigger terminal of discharge signals and the second division voltage unit; wherein a resistance value of the first division voltage unit is adjusted by an off signal of a backlight or an off signal of a display device, such that the trigger terminal of discharge signals outputs the discharge signal; wherein the trigger circuit of discharge signals is characterized in that the first division voltage unit comprises a photo-resistor for receiving the off signal of the display device when the resistance value of the first division voltage unit is adjusted by the off signal of the display device; and wherein a terminal of the photo-resistor is coupled to the driving voltage source, and another terminal of the photo-resistor is coupled to the trigger terminal of discharge signals, and wherein a driving circuit of the display device corresponding to the trigger circuit of discharge signals comprises a rectification unit, and the rectification unit comprises: a rectification bridge, wherein an input terminal of the rectification bridge is configured to receive a voltage of an alternating current, and a first output terminal and a second output terminal of the rectification bridge are configured to output a voltage of a direct current; a light emitting diode configured to generate the off signal of the display device, wherein a positive electrode of the light emitting diode is coupled to the first output terminal of the rectification bridge, and a negative electrode of the light emitting diode is grounded; an isolation diode; and a storage capacitor has a terminal coupled to the second output terminal of the rectification bridge, wherein a positive electrode of the isolation diode is coupled to the first output terminal of the rectification bridge, and a negative electrode of the isolation diode is coupled to another terminal of the storage capacitor. a driving voltage source; a first division voltage unit; a trigger terminal of discharge signals configured to output a discharge signal; and a second division voltage unit having a terminal coupled to the trigger terminal of discharge signals and another terminal grounded; wherein a terminal of the first division voltage unit is coupled to the driving voltage source and another terminal of the first division voltage unit is coupled to the trigger terminal of discharge signals and the second division voltage unit; wherein a resistance value of the first division voltage unit is adjusted by an off signal of a backlight or an off signal of a display device, such that the trigger terminal of discharge signals outputs the discharge signal; wherein the trigger circuit of discharge signals is characterized in that the first division voltage unit comprises a photo-resistor for receiving the off signal of the display device when the resistance value of the first division voltage unit is adjusted by the off signal of the display device; and wherein a terminal of the photo-resistor is coupled to the driving voltage source, and another terminal of the photo-resistor is coupled to the trigger terminal of discharge signals, and wherein a driving circuit of the display device corresponding to the trigger circuit of discharge signals comprises a rectification unit, and the rectification unit comprises: a rectification bridge, wherein an input terminal of the rectification bridge is configured to receive a voltage of an alternating current, and a first output terminal and a second output terminal of the rectification bridge are configured to output a voltage of a direct current; a light emitting diode configured to generate the off signal of the display device, wherein a positive electrode of the light emitting diode is coupled to the first output terminal of the rectification bridge, and a negative electrode of the light emitting diode is grounded; an isolation diode; and a storage capacitor has a terminal coupled to the second output terminal of the rectification bridge, wherein a positive electrode of the isolation diode is coupled to the first output terminal of the rectification bridge, and a negative electrode of the isolation diode is coupled to another terminal of the storage capacitor. a rectification bridge, wherein an input terminal of the rectification bridge is configured to receive a voltage of an alternating current, and a first output terminal and a second output terminal of the rectification bridge are configured to output a voltage of a direct current; a light emitting diode configured to generate the off signal of the display device, wherein a positive electrode of the light emitting diode is coupled to the first output terminal of the rectification bridge, and a negative electrode of the light emitting diode is grounded; an isolation diode; and a storage capacitor has a terminal coupled to the second output terminal of the rectification bridge, wherein a positive electrode of the isolation diode is coupled to the first output terminal of the rectification bridge, and a negative electrode of the isolation diode is coupled to another terminal of the storage capacitor.