Goa circuit and display panel and display device including the same

A display panel, which comprises a GOA circuit, wherein the GOA circuit is a cascaded multiple-stages GOA circuit, each stage GOA circuit comprises a pull-up control unit, a pull-up unit, a signal downward transfer unit, a pull-down unit, one pull-down maintenance unit and a bootstrap unit, each stage GOA circuit is disposed with a clock signal input terminal, a first node, a first voltage input terminal, a pull-down signal input terminal, and a scan signal output terminal to output a scan signal onto a horizontal scan line, and the one pull-down maintenance unit comprises an inverter,

• wherein the inverter comprises first to fourth inverse transistors, a source electrode and a gate electrode of the first inverse transistor and a source electrode of the third inverse transistor are connected to the pull-down signal input terminal, a gate electrode of the third inverse transistor is connected to a drain electrode of the first inverse transistor, a gate electrode of the second inverse transistor and a gate electrode of the fourth inverse transistor are connected to the first node, a source electrode of the second inverse transistor and a source electrode of the fourth inverse transistor are respectively connected to the drain electrode of the first inverse transistor and a drain electrode of the third inverse transistor, and a drain electrode of the second inverse transistor and a drain electrode of the fourth inverse transistor are connected to the first voltage input terminal,
• wherein the first node is disposed between an output terminal of the pull-up control unit and the bootstrap unit, and
• wherein when a potential of the first node is a high potential, a potential of a pull-down signal input to the pull-down signal input terminal is a low potential, and the time when the pull-down signal is at a high potential and the time when the pull-down signal is at a low potential during one period of the pull-down signal are both equal to the time when a signal at the first node is at a high potential.