a display panel including a plurality of pixel rows;

a panel driver which drives the display panel; and

a scan driver including a plurality of stages respectively providing scan signals to the plurality of pixel rows,

wherein the panel driver determines whether input image data represents a still image,

wherein, when the input image data represents the still image, the panel driver determines a flicker value of the still image, applies a compensation value corresponding to a carry shift interval to the flicker value, determines a driving frequency for the display panel based on the flicker value to which the compensation value is applied, and performs an alternate driving operation for the display panel at the driving frequency,

wherein the scan driver shifts a carry signal at the carry shift interval in the plurality of stages,

wherein the carry shift interval is an interval between a first stage which applies the carry signal and a second stage which directly receives the carry signal among the plurality of stages, and

wherein the carry shift interval is controlled by a first switch and a second switch respectively connected to an input terminal of the first stage and an input terminal of the second stage.