Driver IC, display panel and driving method of the display panel

A display panel, comprising a driver IC, and the driver IC comprising a fast discharge circuit;

• wherein the fast discharge circuit comprises:
• an access port, configured to access a fast discharge signal;
• wherein the fast discharge signal is used to indicate that the driver IC is powered off;
• a sensing sub-circuit, connected to the access port and a power supply voltage, and configured to sense a falling edge of the fast discharge signal;
• a buffer sub-circuit, connected to the sensing sub-circuit, a judgment sub-circuit and a power-off sub-circuit, and configured to generate a control signal and send the control signal to the power-off sub-circuit in response to a judgment signal output by the judgment sub-circuit within a preset time after the sensing sub-circuit senses the falling edge of the fast discharge signal;
• the judgment sub-circuit, connected to the buffer sub-circuit, and configured to generate the judgment signal according to a state of a target signal within the preset time, and send the judgment signal to the buffer sub-circuit;
• and
• the power-off sub-circuit, connected to the buffer sub-circuit, and configured to control the driver IC to perform or not to perform a power-off operation in response to the control signal.

A driving method of a display panel, applied to a driver IC, wherein the driver IC comprises a fast discharge circuit, and the fast discharge circuit comprises an access port for accessing a fast discharge signal, a judgment sub-circuit, a buffer sub-circuit and a power-off sub-circuit, and the driving method comprises:

• generating, by the judgment sub-circuit, a judgment signal according to a target signal within a preset time in response to a falling edge of the fast discharge signal;
• generating, by the buffer sub-circuit, a control signal and sending the control signal to the power-off sub-circuit in response to the judgment signal;
• and
• controlling, by the power-off sub-circuit, the driver IC to perform or not to perform a power-off operation in response to the control signal.