Display driver, display system and operating method of display driver

The display driver and a display method of operation for reducing power consumption of the display system, and a display system including the display driver is disclosed. Display driver according to an embodiment of the present invention includes a first memory for storing a plurality of image data; And on the basis of the display information to access said first memory, an image generator for generating a first display data to be displayed on the first display panel based on the image data output from the first memory; and a.