Drive circuit and drive method thereof, and panel and drive method thereof

A drive circuit, comprising:

• a step-up unit, a plurality of signal input terminals and a signal output terminal, electrically connected with each other, wherein:
• the step-up unit includes a first module, a second module and a first capacitor, electrically connected with each other;
• the plurality of signal input terminals includes a first signal input terminal, a second signal input terminal, a third signal input terminal and a fourth signal input terminal;
• the first module is electrically connected to each of the first signal input terminal, the third signal input terminal, and a first electrode of the first capacitor;
• and the first module is configured to transmit a signal of the third signal input terminal to the first electrode of the first capacitor;
• the second module is electrically connected to each of a second electrode of the first capacitor, the second signal input terminal and the fourth signal input terminal;
• and the second module is configured to:
• transmit a signal of the fourth signal input terminal to the second electrode of the first capacitor in a first time period, to generate a voltage difference between the first and second electrodes of the first capacitor;
• and
• transmit the signal of the fourth signal input terminal to the second electrode of the first capacitor in a second time period, to further increase the signal of the first electrode of the first capacitor;
• and
• the first electrode of the first capacitor is electrically connected to the signal output terminal to output a high potential signal.