The embodiment of the invention belongs to the technical field of display, and provides a
display device and method, a storage medium and a program product, the
display device comprises a display screen, an
image processor, a backlight module, a plurality of backlight driving units and a controller, the backlight module comprises backlight sources of various different colors, and the controller is connected with the display screen. Each backlight driving unit corresponds to a backlight source of one color, and the controller is configured to receive a
synchronizing signal sent by the
image processor and image data of a next frame of picture; the
synchronizing signal is used for indicating the controller to display the next frame of picture; determining M main colors of the sub-picture of the next frame of picture according to the
synchronization signal; the backlight source corresponding to the main color is a backlight source needing to be lightened when the sub-picture is displayed; and controlling a backlight driving unit to perform backlight control according to the image data and the main color. The main color of the sub-picture is identified through the
synchronizing signal, the backlight driving unit does not process backlight data of a non-sub-picture in subsequent
processing, and the data volume processed by the backlight driving unit is greatly reduced, so that the backlight
delay is reduced, the color separation phenomenon is inhibited, and the user experience is improved.