A display device and a display control method are provided. The display device is applicable to a display panel. The display device includes a display driver integrated circuit (IC), a gate driver in panel (GIP) circuit and a GIP check circuit. The GIP circuit includes a plurality of shift registers connected in series, and the shift registers may generate a plurality of gate driving signals to control operations of a plurality of rows of display units within the display panel, respectively. The GIP check circuit may sequentially check whether a plurality of specific gate driving signals among the gate driving signals are available. The display driver IC may generate a check result according to at least one signal from the display panel, and selectively adjust display data corresponding to an image to make the display panel display an adjusted image according to the check result.