Display device

A display device includes: a display panel that displays an image based on input image data; a driving controller generating a voltage control signal for adjusting a first power supply voltage applied to the display panel in an (N + M) th frame based on a maximum gradation value of the input image data of an Nth frame, where N is a positive integer, and M is a positive integer; and a power supply voltage generator sensing a power supply current applied to the display panel in the (N + M)-th frame, generating a second power supply voltage based on the voltage control signal, and controlling a voltage level of the first power supply voltage based on the second power supply voltage and a current level of the power supply current. 一种显示装置包括：显示面板，基于输入图像数据显示图像；驱动控制器，基于第N帧的所述输入图像数据的最大灰度值生成用于调节在第(N+M)帧中施加到所述显示面板的第一电源电压的电压控制信号，其中，N是正整数，并且M是正整数；以及电源电压生成器，感测在所述第(N+M)帧中施加到所述显示面板的电源电流，基于所述电压控制信号生成第二电源电压，并且基于所述第二电源电压和所述电源电流的电流水平控制所述第一电源电压的电压电平。