Grid driving unit circuit, grid driving circuit of grid driving unit circuit, and display

The invention discloses a grid driving unit circuit, a grid driving circuit of the grid driving unit circuit, and a display. The grid driving unit circuit comprises a grid scanning signal output end, a first module, a second module, a driving module and a low level maintaining module. By designing control signals, the first module is used for electricity charging in a forward scanning mode and electricity discharging in a reverse scanning mode; the second module is used for the electricity charging in the forward scanning mode and the electricity discharging in the reverse scanning mode; and the grid driving circuit is enabled to realize the forward or reserve scanning by adopting only one set of circuit through the multiplexing of the first module, the second module, the driving module and the low level maintaining module; and the number of used devices is small, and the structure is simple.