Display device and display method

A display method for driving a display panel of a display device, the display panel having a plurality of pixel assemblies each comprising a power supply end,

• wherein the display device comprises:
• the display panel;
• a timing control circuit, having a first signal output end configured to output a selection instruction signal, and a second signal output end configured to output a clock signal;
• and
• a power circuit, comprising a voltage generation assembly configured to generate a plurality of step voltages, a voltage selection assembly connected to the first signal output end and the voltage generation assembly and configured to select at least one step voltage from the plurality of step voltages in response to the selection instruction signal, and a voltage conversion assembly connected to the second signal output end and the voltage selection assembly, configured to determine a power supply voltage based on the step voltage in response to the clock signal, and further connected to the power supply end to output the power supply voltage to the power supply end:
• wherein each pixel assembly further comprises an organic light-emitting diode, and the power supply end of each pixel assembly is an anode of the organic light-emitting diode;
• wherein each pixel assembly further includes a first response switch, a second response switch, and a capacitor, wherein the first response switch has a first end connected to a data line, a second end connected to a first end of the capacitor, and a control end connected to a scan line:
• wherein a first end of the second response switch is connected to an operating voltage end, a second end of the capacitor is connected to a circuit between the second response switch and the operating voltage end, and a control end of the second response switch is connected to a circuit between the second end of the first response switch and the capacitor;
• wherein the display method comprises:
• generating a selection instruction signal and a clock signal;
• generating a plurality of step voltages, and selecting at least one step voltage from the plurality of step voltages according to the selection instruction signal;
• and
• determining a power supply voltage based on the step voltage according to the clock signal, and outputting the power supply voltage to the power supply end.