receiving initial image data of a frame, wherein a resolution of an initial image corresponding to the initial image data is different from a resolution of the display panel, and the initial image data comprises a plurality of pieces of initial gray scale data for displaying the initial image;

determining target gray scale data corresponding to panel sub-pixels in the display panel according to the initial gray scale data in the initial image data, the resolution of the initial image and the resolution of the display panel; and

driving the display panel to display according to the target gray scale data;

wherein the resolution of the initial image is smaller than the resolution of the display panel;

wherein the panel sub-pixels in the display panel are arranged into panel sub-pixel groups in a first direction, and the plurality of panel sub-pixel groups are sequentially arranged in a second direction; the panel sub-pixels in a same panel sub-pixel group are the same in color;

image sub-pixels in the initial image are arranged into image sub-pixel groups in the first direction, and the plurality of image sub-pixel groups are sequentially arranged in the second direction; the image sub-pixels in a same image sub-pixel group are the same in color; an image sub-pixel corresponds to a piece of initial gray scale data; and

the determining the target gray scale data corresponding to the panel sub-pixels in the display panel according to the initial gray scale data in the initial image data, the resolution of the initial image and the resolution of the display panel, comprises:

determining, according to the resolution of the initial image and the resolution of the display panel, that a total quantity of the image sub-pixel groups in the initial image is the same as a total quantity of the panel sub-pixel groups in the display panel, wherein a total quantity of the panel sub-pixels in a panel sub-pixel group is M times a total quantity of the image sub-pixels in an image sub-pixel group, M≥2, and M is an integer;

dividing M adjacent panel sub-pixels in each panel sub-pixel group into an adjustment area, such that an adjustment area corresponds to an image sub-pixel; and

determining the target gray scale data corresponding to each panel sub-pixel in each adjustment area according to the initial gray scale data of the image sub-pixel corresponding to each adjustment area.