In a shift register of a driver circuit of a display panel, a drive control circuit is electrically connected to a signal input terminal, a first node, and a second node and controls a signal of the first node and a signal of the second node in response to an input signal of the signal input terminal; an output circuit is electrically connected to the first node, the second node, a first level terminal, a first clock terminal, and a signal output terminal and controls an output signal of the signal output terminal according to the signal of the first node, the signal of the second node, a first level signal of the first level terminal, and a first clock signal of the first clock terminal; the signal output terminal of an x-th stage shift register is electrically connected to a signal input terminal of a y-th stage shift register.