The invention provides an on-state voltage generation circuit, and relates to the technical field of liquid crystal display. The on-state voltage generation circuit is connected to the outer side of the power supply circuit; the power supply circuit is provided with a driving pin and a forward feedback voltage pin, the power supply circuit outputs an analog voltage and a trigger signal to the on-state voltage generation circuit, and the on-state voltage generation circuit comprises a voltage generation module for outputting an on-state voltage and a voltage increasing module connected with thevoltage generation module. The power supply chip can output higher on-state voltage VGH during shutdown, so that the on-state voltage VGH can be maintained at higher voltage for a period of time, andsufficient discharge can be realized during shutdown.