Driving method and driving device of display panel and display panel

The invention discloses a driving method and a driving device of a display panel and the display panel. The driving method of the display panel comprises the following steps: determining the number of subframes in one frame of the display panel according to the gray scale range of the display panel; wherein the number of the subframes is greater than or equal to 4; determining data voltages corresponding to different subframes according to the display gray scale of the display panel; wherein the data voltages corresponding to the at least two subframes are not equal; and driving the display panel to display according to the data voltages of the different subframes. The actual gray scale brightness corresponding to the gray scale can be adjusted through the light emitting time in one frame and the light emitting brightness corresponding to different subframes at the same time, the adjustment precision of the actual gray scale brightness is improved on the basis that the number of bits is not additionally incre